Principal research scientist jobs in Vacaville, CA

Join a Leading Applied Research Lab Pushing the Boundaries of Reinforcement Learning Are you passionate about advancing the frontiers of reinforcement learning (RL)? An innovative AI research lab is seeking talented and ambitious scientists to shape the next generation of RL techniques-especially where they intersect with large models and environment generation. About the Role As an AI Research Scientist focused on RL, you will: Develop novel optimization-based methods for automated RL environment generation Establish baselines for evaluating the quality and diversity of RL environments Design infrastructure to create dynamic environments from historical datasets and agent evaluations Drive your own research agenda, contributing directly to the progress of our platform and the broader AI community What We're Looking For PhD (or equivalent experience) in machine learning, computer science or a related field Strong publication record and/or evidence of research impact (open source, deployed systems, etc.) Deep expertise in reinforcement learning and machine learning fundamentals Proficient in Python and at least one modern ML framework (such as PyTorch or JAX) Bonus Points Experience with post-training large language models (LLMs) Demonstrated software engineering skills Ability to communicate research findings effectively to both technical and non-technical audiences

Early-stage (vertical RL) company looking to hire a Sr. Applied RS with a strong background in reinforcement learning. Qualifications: Applied Research with MS or PhD in a related field and 4 + years industry experience in deep learning and 2+ years with reinforcement learning Successful track record as a self-starter in 0->1 scenarios with a proven ability to take SOTA models into production Please note: Due to the selective nature of this service and the volume of applicants we typically receive from our job postings, a follow-up email will not be sent until a match is identified with one of the startup investments in our portfolio. About Us: Greylock is an early-stage investor in hundreds of remarkable companies including Airbnb, LinkedIn, Dropbox, Workday, Cloudera, Facebook, Instagram, Roblox, Coinbase, Palo Alto Networks, among others. More can be found about us here: ********************* We are full-time, salaried employees of Greylock who provide free candidate referrals/introductions to our active investments to help them grow/succeed (as one of the many services we provide). Please note: We are not recruiting for any roles within Greylock at this time. This job posting is for direct employment with a startup in our portfolio.

We're working with a San Francisco client that's got a research team of 50~ professionals and looking to further expand it. They are specifically looking to flesh out their Research Group by hiring a Research Scientist on a hybrid basis. They have seen $300M in a recent fund raise. Skills targeted: PhD in Physics/ Quantum Physics/ Theory/ Statistics/ Mathematics/ Computational Science or similarly related field. 2+ YoE working with AI Agents. Good exposure to LLMs. Ideally a background in Audio focused research. Alternatively Search, would also be highly advantageous. TC package of $1-1,5M with sizeable base salary & equity package. If that looks of interest, apply & Goliath will be in touch!

⚡ Research Scientists/Engineers (all levels) 🔍 Focus on Vision Data Infrastructure 🤖 Fundamental AI Research Institute 🌎 San Francisco Bay Area, USA 💸 $250,000 - $600,000 salary + annual bonus Come join one of the only research institutions globally with resources to compete with top AI companies =>10s of 1000s of GPUs to explore state-of-the-art research in LLMs, Multimodal and Agentic AI. Currently seeking AI talent with expertise in building scalable pipelines for vision data to support both image/video generative training and multi-modal alignment. You'll design high-performance pipelines for large-scale image and video datasets, enabling efficient pretraining, alignment, and simulation-based data generation. Responsibilities: Vision Data Sourcing & Curation Collect and organize image and video data from open datasets and the web. Handle data cleaning, filtering, deduplication, and metadata generation. Ensure ethical and compliant data collection at scale. Processing & Augmentation Build high-throughput pipelines for vision data preprocessing (frame extraction, resolution normalization, format conversion, latent caching). Implement GPU-accelerated augmentation and distributed data loading (WebDataset, TFRecords, Parquet). Synthetic & Simulation-Based Data Generation Use simulation tools (e.g., Unreal Engine 5, Isaac Sim, Unity) to generate high-quality synthetic vision data. Create specialized datasets for VLM training, visual reasoning, and agent interaction. Requirements: Strong experience with data engineering, computer vision, or machine learning infrastructure. Expertise in building and scaling ETL/data pipelines for large unstructured datasets. Proficiency with Python, PyTorch, and distributed data frameworks (e.g., Ray, Spark, Dask). Experience with WebDataset, TFRecords, Parquet, or similar high-throughput data formats. Familiarity with GPU-accelerated preprocessing, NVIDIA DALI, or equivalent systems. Understanding of image/video codecs, data compression, and cloud storage optimization. Preferred Experience: Prior work with simulation-based or synthetic data generation using Unreal Engine, Isaac Sim, or Unity. Experience curating datasets for multimodal or vision-language model training. Knowledge of data ethics, privacy, and compliance frameworks for large-scale AI datasets. Experience contributing to open datasets or data-centric AI research. Why apply: Opportunity to join a fast-growing core team that are already pushing AI breakthroughs Highly competitive salary package Work alongside ambitious and bright superstars from tech and academia Medical, Dental and Vision Insurance Relocation package available 🌎 San Francisco Bay Area, USA 📧 Interested in applying? Please click on the ‘Easy Apply' button or alternatively email me your resume at ************************

Senior RL Research Scientist / Reinforcement Learning Scientist Join a frontier AI team building systems that can act in the physical world, experimenting, optimizing, and controlling real processes through advanced ML, simulation, and automation. This group is pushing the boundaries of physical intelligence, backed by significant long-term funding and a mandate to invent from first principles. If you want to: Work on problems few teams in the world can touch Build RL systems that power real tools, workflows, and scientific processes Operate in a fast, high-ownership, deeply technical culture …this is the kind of role that defines a career. The Role You'll design and deploy reinforcement learning systems that control complex tools, optimize multi-step processes, and operate across high-fidelity simulations and digital twins. Expect hands-on research, real-world experimentation, and tight collaboration with teams across ML, simulation, and systems engineering. What You'll Do Build RL environments for tool control, workflow optimization, and long-horizon decision-making Develop safe and constrained RL methods, verifier-driven rewards, and offline to online training pipelines Create state/action representations and evaluation frameworks for reliable policy behavior Work with cross-functional researchers and engineers to deploy RL agents into real workflows What You Bring Strong background in RL, optimal control, or sequential decision-making Experience applying RL to complex simulated or physical systems Familiarity with safe/constrained RL, verifiers, or advanced evaluation pipelines Ability to design environments, rewards, and diagnostics at scale Comfort working across ML, simulation, and systems interfaces

💡 What if your next role let you design reinforcement learning systems that directly control real-world science -training agents that run experiments, tune physical tools, and accelerate discovery from months to days? 🚀 Our client - a hyper-talent-dense physical-AI startup backed by top-tier builders across frontier AI and deep tech - is hiring a Senior RL Research Scientist (San Francisco / Redwood City, In-Person). They're building Physical Superintelligence: AI that can ask any scientific question about the physical world and get a real answer in days, not years-by pairing large models with massive automated “experiment factories.” The role: 🎯 Own RL for real-world tool control and long-horizon workflows across biology, chemistry, materials, and robotics 🧪 Build RL environments grounded in physics, simulation, and digital twins-not toy benchmarks 🛡️ Design safe / constrained RL + verifier-integrated rewards to keep agents reliable in high-stakes domains 📈 Drive offline → online transitions and evaluation pipelines as agents learn from and act on real telemetry 🤝 Partner across LLM, agent systems, simulation, and physical-tooling teams to deploy policies into production workflows ⚙️ High-ownership algorithm + systems work where you shape the foundations of physical-AI autonomy Why join? 🌍 Work at the frontier of real-world impact-from multi-cancer early detection to general scientific discovery 🏭 Operate on a uniquely scaled platform: 20k+ sq ft automated facilities producing real experimental feedback loops 💰 Competitive salary + meaningful equity 🚀 Tiny, world-class team with a “best-person-you've-worked-with” talent bar 🏢 In-person, high-velocity environment with deep collaboration across SF + Redwood City 📩 Interested? Apply now

located in San Francisco, CA Responsibilities of the Scientist/Sr. Scientist-Stem Cell Biology/Embryology: Design and execute experiments in stem cell differentiation, organoid generation, and tissue engineering. Innovate then execute experiments to generate and differentiate human stem cells, develop functional assays, assess and interpret experimental workflows Perform mammalian embryo dissections, tissue isolations, and culture experiments to study and model developmental processes. Apply principles of developmental biology and embryology to guide tissue maturation and patterning. Collaborate with biomaterials and engineering teams to integrate cells and tissues. Develop and optimize protocols for reproducible tissue generation and maintenance. Test novel stem cell culture conditions, sort, screen, expand and differentiate hi PSCs according to latest protocols and newly developed approaches. Requirements of the Scientist/Sr. Scientist-Stem Cell Biology/Embryology: PhD in biological sciences, stem cell biology, genetics or related field. 2+ years hands-on expertise in stem cell culture (iPSCs/ESCs). Hands-on experience with mammalian embryos, including dissections and culture. Experience in molecular biology and strong problem solving skills.

Pay Rate Range: $50.00/hr. - $55.24/hr. Target Pay Rate: $55.24/hr. Duration: 3 Months Onsite Shift (if applicable): M-F 8:00 AM - 5:00 PM JOB DESCRIPTION SUMMARY/JOB PURPOSE: The Scientist II will be joining the Biotherapeutics Translational Pharmacology team to support our research programs. This position is primarily responsible for developing, optimizing and reporting out data for Bioanalytical assays for Antibody Drug Conjugates (ADC) to include ELISA, LC-MS and hybrid LC-MS techniques. This job will require the candidate to have excellent organization, communication, and teamwork skills, as well as flexibility and versatility, to meet tight deadlines in a dynamic, fast-moving environment. ESSENTIAL DUTIES AND RESPONSIBILITIES: * Responsible for running analytical samples from nonclinical PK studies using ELISA, LC-MS and hybrid LC-MS techniques * Operation and troubleshooting of automated instrumentation * Collaborates with Biotherapeutics team members to support project advancement. * Maintains electronic laboratory notebook in a complete, consistent, and timely manner in accordance with company intellectual property policies and practices. * Prepares and organizes data for presentation. May present data and status reports at individual, group, and departmental research meetings under general supervision. * Adherence to excellent health and safety practices and compliance with applicable EH&S safety rules and participates in mandatory safety training programs. * Other responsibilities as assigned SUPERVISORY RESPONSIBILITIES: * No supervisory responsibilities EDUCATION/EXPERIENCE/KNOWLEDGE & SKILLS: Education: * Bachelor's degree in related discipline and a minimum of four years of related experience; or * Master's degree in related discipline and a minimum of two years of related experience; or, * Equivalent combination of education and experience. Experience: * Drug discovery experience is necessary with hands-on bioanalytical assay development with an excellent understanding of fundamental processes. * Experience with ELISA, LC-MS and Hybrid LC-MS is required * Experience using WinNonlin and PRISM applications are preferred. Knowledge/Skills: * Highly self-motivated with exceptional attention to detail is required. * Thorough knowledge of activities related to bioanalytical assay development and data generation * Excellent verbal and written communication skills with the ability to follow written instructions and SOPs. * Ability to multi-task and excellent time management skills. * Excellent work ethic, working effectively in both a team environment and independently. * Thorough proficiency in MS Word, MS PowerPoint and MS Excel is required. WORKING CONDITIONS: * Primarily working in laboratory and office environment. * Potential handling of hazardous materials, and brief periods of working in both 4°C and -20°C environments. * May be required to work weekends as needed. All qualified applicants will receive consideration for employment without regard to race, color, national origin, age, ancestry, religion, sex, sexual orientation, gender identity, gender expression, marital status, disability, medical condition, genetic information, pregnancy, or military or veteran status. We consider all qualified applicants, including those with criminal histories, in a manner consistent with state and local laws, including the California Fair Chance Act, City of Los Angeles' Fair Chance Initiative for Hiring Ordinance, and Los Angeles County Fair Chance Ordinance. For unincorporated Los Angeles county, to the extent our customers require a background check for certain positions, the Company faces a significant risk to its business operations and business reputation unless a review of criminal history is conducted for those specific job positions.

We are a group of people united by a strong purpose. We want you to get to know us, and Giuseppe, our very own artificial intelligence. We love good food, but above all, we love the planet, and that's why, to protect it, we reinvent the food industry, one delicious bite at a time, elevating what we eat, through our technology and based on plants. Our recipe has three mega-important components: science, technology, and of course, disruptive talents who work daily to create a better future. At NotCo we are not and do not seek to be the perfect company, but rather the right one. We are here to produce changes, and that is why we dare, fail, and sometimes achieve incredible successes. We are currently looking for a Product Development Scientist for our NotCo B2B Research & Development located in San Francisco, California, requiring an active on-site presence. This position will report to our R&D Sr. Team Lead and the incumbent will work cross-functionally to ensure R&D activities are successfully deployed locally. Responsible for the: Independently conducts day-to-day product development activities as directed by the manager across multiple projects. This includes supporting activities related to the full product lifecycle process (from product concept to successful commercial launch as needed)and supporting process development, scale-up and technology transfer Supports the design and execution of bench-top tests, pilot-plant trials and full-scale formulations to deliver high-quality food products that meet and exceed the sensory, cost, and other performance targets Proactively proposes and uses sensory and analytical analysis to guide and validate the development process Maintains detailed documentation, experiment tracking and outcomes, and documents finished goods and ingredient specifications Provides feedback to project lead regarding relevant technical and process information Communicates proactively and effectively with cross-functional teams, clearly articulating perspectives and trade-offs related to new product development goals Utilizes NotCo's proprietary AI technology to develop and improve food products Supports formula validation activities as well as process development, scale-up and technology transfer Engages in client communications and workshops, bringing technical Maintains detailed documentation across all R&D activities in a timely manner Qualifications / Requirements: Bachelor's degree in Food Engineering, Food Science, Engineering in Biotechnology or a similar discipline. 2 + years of Food R&D experience is desired, preferably across both food and beverage categories. Be agile, adaptable, and thrive in a dynamic and changing culture; works relentlessly to overachieve, anticipate obstacles, and create plans to overcome them. Adapts easily to changing priorities and direction based on new project learnings and team priorities. Demonstrated competency to effectively communicate (oral & written) cross-functionally with solid collaboration skills. Comfortable in client-facing situations and able to communicate complex topics clearly and simply. Excel in a startup environment, is excited to create new procedures and processes from scratch and has a strong entrepreneurial mindset. Be a problem solver, have a general manager mindset, and take the initiative to get the job done Possess strong planning, project management, and execution skills, and the ability to articulate where and how you have used them. Rigorous data-driven/analytical capability and ability and presence to present data effectively to a leadership team Work well in teams and cross-functional groups in a matrixed environment, both regionally and globally Possesses strong computer skills, including a high level of proficiency in MS Office, specifically Excel Authorization to work in the U.S. is required Ability to travel up to 50% of the time, including international travel and extended trips. NotCo is committed to fair and equitable compensation practices. The pay range for this role is $65,000 - $75,000. Actual compensation packages are based on several factors that are unique to each candidate, including but not limited to skill set, depth of experience, certifications, and specific work location. This may be different in other locations due to differences in the cost of labor. We are an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.

The University of California, San Francisco (UCSF) is dedicated to advancing health worldwide through innovative research, high-quality education, and exceptional patient care. UCSF is recognized for fostering collaboration among its renowned graduate schools, medical center, and research programs. The university is committed to excellence, driving breakthroughs that improve lives. UCSF serves as a hub for scientific discovery and education in the heart of San Francisco, CA. The position is in the group of Drs. Boris Bastian and Iwei Yeh at UCSF's Helen Diller Family Comprehensive Cancer Center, leaders in melanoma genetics and translational research. The lab offers a stimulating, collaborative environment with access to cutting-edge technologies and interdisciplinary expertise. Role Description This is a full-time, on-site role for a Postdoctoral Researcher based in the Melanoma Discovery Lab at the University of California, San Francisco (UCSF) is seeking a highly motivated postdoctoral fellow (MD or PhD) to study systemic immune responses to gene fusion-driven cancers. This project explores how potent oncogenic fusions can initiate neoplastic growth while simultaneously triggering immune surveillance, with Spitz tumors serving as a model. The broader aim is to understand how similar transient, immune-contained lesions may arise in other tissues and be eliminated before clinical detection. The fellow will join a collaborative effort between cancer geneticists/melanoma biologists and genetic immunologists, combining genomic and immunologic approaches to study the systemic response to fusion-driven neoplasms. Qualifications MD or PhD in cancer biology, immunology, genetics, or related fields Strong research background and publication record Experience with molecular, genomic, or immunologic methods preferred Intellectual curiosity about tumor-immune system interactions Proficiency in Laboratory Skills and experience in conducting hands-on experimental work Strong Research and Data Analysis capabilities with attention to detail Experience with publication in peer-reviewed journals is a plus To Apply Send a CV, brief statement of research interests, and contact information for three references to **********************.

Clorox is the place that's committed to growth - for our people and our brands. Guided by our purpose and values, and with people at the center of everything we do, we believe every one of us can make a positive impact on consumers, communities, and teammates. Join our team. #CloroxIsThePlace Your role at Clorox: The Research and Development organization is embedded within each of our Clorox businesses, taking new generations of consumer products from concept to reality. With such diverse roles as engineers, scientists, packaging experts, and technicians R&D is a community of technical leaders and managers actively involved in virtually every step in the lifecycle of our products, from initial concept to raw materials to final goods on store shelves. R&D is committed to leveraging the latest technology to bring consumers the high-quality, innovative products they expect and deserve. In this role, you will: As an R&D Product Development Scientist 2 at Clorox you will play a pivotal role in driving technical excellence and ensure superior product innovation across our Consumer Products and Professional Products portfolios. You'll apply your PhD-level expertise to develop and optimize product formulations that meet the needs of diverse end users from everyday consumers to hospital disinfection. Collaborating cross-functionally with teams in Marketing, Sales, Insights, Microbiology, Analytical Chemistry, and Digital Data, you'll translate scientific insights into impactful product solutions. You'll make a difference from day one, contributing to products used by millions of people while growing your technical and leadership skills working on some of the most trusted brands in the consumer goods industry. In this role you will: Drive Innovation: Develop and refine novel product formulations that deliver a superior product experience, while also creating consumer and customer facing claims and demos Execute with Excellence: Troubleshoot formulation challenges and make relevant measurements to generate data that supports technical solutions and translates them into business impact, while maintaining product specifications, formulation standards, and technical documentation to ensure consistency and compliance. Own the Technical Details: Identify and document novel technical solutions and formulation approaches that may be eligible for intellectual property protection and ensure Clorox's competitive advantage. Support Commercialization: Develop and apply SOPs, test methods, and best practices while leading product and consumer testing, and continuously research ways to evolve and improve R&D tools and approaches to ensure consumer delight and successful product launches. Collaborate Across Functions Work closely with Marketing, Sales, Digital Data, Insights, and cross-functional R&D teams to analyze problems from multiple points of view and connect disparate ideas to create innovative solutions, proposals, and concepts. Grow your Career: Be part of a team that values playing to win, technical curiosity, and raising the bar where your contributions help shape the future of Product Innovation at Clorox. What we look for: Ph.D. Chemistry, Chemical Engineering, or a related field Candidates must have education and expertise in at least one of the following areas: Aqueous oxidants, kinetics, and equilibria for cleaning, bleaching and antimicrobials Organic chemistry, aqueous surfactants, colloids, and interfacial science for household product formulation. Water soluble polymers for household product formulation. Experience in evaluation, characterization, and measurement of technology in their area of expertise Confident self-starter, critical thinker, capable of working independently and cross-functionally with minimal supervision and direction in a fast-paced environment. Workplace type: Our values-based culture connects to our purpose and empowers people to be their best, professionally and personally. We serve a diverse consumer base which is why we believe teams that reflect our consumers bring fresh perspectives, drive innovation, and help us stay attuned to the world around us. That's why we foster an inclusive culture where every person can feel respected, valued, and fully able to participate, and ultimately able to thrive. Learn more. [U.S.]Additional Information: At Clorox, we champion people to be well and thrive, starting with our own people. To help make this possible, we offer comprehensive, competitive benefits that prioritize all aspects of wellbeing and provide flexibility for our teammates' unique needs. This includes robust health plans, a market-leading 401(k) program with a company match, flexible time off benefits (including half-day summer Fridays depending on location), inclusive fertility/adoption benefits, and more. We are committed to fair and equitable pay and are transparent with current and future teammates about our full salary ranges. We use broad salary ranges that reflect the competitive market for similar jobs, provide sufficient opportunity for growth as you gain experience and expand responsibilities, while also allowing for differentiation based on performance. Based on the breadth of our ranges, most new hires will start at Clorox in the first half of the applicable range. Your starting pay will depend on job-related factors, including relevant skills, knowledge, experience and location. The applicable salary range for every role in the U.S. is based on your work location and is aligned to one of three zones according to the cost of labor in your area. -Zone A: $88,700 - $165,900 -Zone B: $81,300 - $152,100 -Zone C: $73,900 - $138,300 All ranges are subject to change in the future. Your recruiter can share more about the specific salary range for your location during the hiring process. This job is also eligible for participation in Clorox's incentive plans, subject to the terms of the applicable plan documents and policies. Please apply directly to our job postings and do not submit your resume to any person via text message. Clorox does not conduct text-based interviews and encourages you to be cautious of anyone posing as a Clorox recruiter via unsolicited texts during these uncertain times. To all recruitment agencies: Clorox (and its brand families) does not accept agency resumes. Please do not forward resumes to Clorox employees, including any members of our leadership team. Clorox is not responsible for any fees related to unsolicited resumes.

Job Description About us: Valent U.S.A. LLC, a wholly owned subsidiary of Sumitomo Chemical Company, Limited, engages in the development, registration, sales, and marketing of integrated technological solutions for crop production and pest management that deliver value for our customers and stakeholders. A leading crop protection firm serving the agricultural and non-crop products markets in North America, Valent products help growers produce safe and abundant food and fiber crops, and horticultural professionals improve the quality of life for their customers. The corporate motto, Products That Work, From People Who Care , describes the company's business philosophy. Valent seeks out and provides customers with innovative and effective solutions to their production challenges. Our vision is to be the best company delivering integrated solutions of biorational and traditional crop protection solutions to our customers. Valent is dedicated to creating a world that is healthier and more comfortable, and that has a sustainable abundance of quality, affordable food, helping crops to be the ultimate renewable resource. General Description: The purpose of this position is to conduct research and development efforts for Herbicide product development from conceptual phase through commercial production by working in coordination with the Senior Manager of Formulation Development and Analytical. The position is responsible to execute all related scientific research and/or development studies assigned for critical product development by individual effort or in collaboration with staff. Investigates the feasibility of applying a wide variety of scientific principles and concepts to potential inventions, products and problems. Plan and executes lab research. Maintain broad knowledge of state-of-the-art principles and theories. Make major contributions to scientific literature and conferences. Serve as in-house and outside consultant. May act as spokesperson on corporate research and development and advise top management. Participate in development of patent applications. Participate in promoting the professional development of junior research staff. Interfaces with various associated departments. Uses professional concepts to contribute to the development of company concepts and principles to achieve objectives in creative and effective ways. Principal Responsibilities: Use expert knowledge to independently plan, execute, and/or direct complex research and development projects for new or improved/innovative formulations and formulation technology, particularly in herbicide product segment. Manage formulation development activities through all stages of the project: development of preliminary formulations for efficacy testing, formulation optimization and processing studies to establish formulation for regulatory studies and EPA registration, scale-up, and commercial production. Exercise wide latitude in determining objectives and approaches, selecting methods, techniques and evaluation criteria for obtaining results. Requires coordination and communication with other Valent teams, including, Product Development Managers, Regulatory Project Managers, Toxicology Manager, Supply Chain, and production facility personnel. Provide technical support services to Manufacturing, Product Development Managers, Marketing, and Sales to solve technical problems or customer complaints related to Valent formulations. Work directly and independently with Market/Product Managers, Technology Managers and Product Development specialists to investigate feasibility for exploratory projects and to set objectives and maintain timelines for development projects for new or improved/innovative formulations and formulation technology. Serve as a resource and source for ideas for product innovation. Interact with Sumitomo Group Companies' formulation chemists, consultants, and industry personnel regarding research, development, and alternative technologies for formulation improvements. Evaluate formulation technology advances for application to Valent products and lead implementation efforts across product line. Viewed as an expert in all aspects of formulation research and development. Communicate proactively and effectively, both orally and in writing, with Senior Formulation Manager, Technology staff, personnel in other functional areas, and with appropriate external personnel, to ensure that projects are progressing on track and meet objectives and timelines: provide information on formulation project status and results; set priorities; resolve problems or issues; coordinate activities; and obtain feedback and needed information or assistance. Serve as consultant to management and as an external spokesperson for the company. Advise on direction for strategic planning from technical perspective to meet company objectives. May serve on industry committees or task forces. Engage Associate/Formulations Scientists in conduct of tasks/projects; train and develop; communicate priorities and objectives when collaborating; review work from subordinates. Serve as a resource/trainer/mentor for junior members of the group. Follow safety and regulatory plans, and waste disposal procedures. Participate in all required safety meetings and training programs. Perform research and/or development in collaboration with others for projects. Make detailed observations, analyze data and interpret results. Exercise technical discretion in the design, execution and interpretation of experiments that contribute to project strategies. Prepare technical reports, summaries, protocols, and quantitative analyses. Maintain familiarity with current scientific literature. Contribute to project process within his/her scientific discipline. Investigate, create and develop new methods and technologies for project advancement. Maintain high level of professional expertise through familiarity with scientific literature. May participate in scientific conferences and contribute to scientific journals. May be responsible for identifying patentable inventions. Use professional concepts in accordance with company objectives to solve complex problems in creative and effective ways. Manage all formulation development activities for assigned products. This includes constant interfacing with the other members of the Seed Treatment, Fungicide, Insecticide and Herbicide Teams in both Field Development and Marketing. Maintain expertise in all aspects of technology including requirements for various formulations, application methods, and test methods. Utilize knowledge and expertise to develop formulations that can be registered, commercialized, and meet customer needs and expectations. Serve as formulation technology expert in meetings with various companies, customers, and prospective or established business partners. Qualifications: MS, PhD, JD or equivalent, with 8+ years of related experience. Chemistry, related science degree. Experience in spreadsheets and word processing, problem solving, communication, detail oriented, evaluation and interpretation of data, instrument/equipment operation, maintenance and repair. In-depth knowledge of chemistry lab procedures, formulation development, manufacturing and packaging of agricultural chemicals and EPA approved inerts. Techniques for preparation and evaluation of formulations. More than 8 years of experience in preparation and evaluation of agricultural chemical formulations. More than 6 years experience in managing laboratory formulation research projects and technical support in the agricultural chemical industry. Demonstrated creativity, championing skills and deep technical knowledge of herbicide formulations and performance/stability requirements. Physical Demands and Work Environment (LAB Position) The physical demands and work environment characteristics described below are representative of those that must be met by an employee to successfully perform the essential functions of this job. Reasonable accommodations may be made to enable individuals with disabilities to perform the essential functions. Physical Demands include constant sitting, walking, standing, bending at the neck and waist, squatting, climbing, kneeling, crawling, twisting at the neck and waist, simple grasping, power grasping, and fine manipulation with hands, pushing and pulling with hands, reaching above shoulder level, and lifting and carrying up to 25 lbs.; and occasional lifting and carrying of up to 50 lbs. Will require the employee to lift and carry up to a 2.5-gallon jug containing liquid formulations and products. May be required to work in powder room environment to test or develop dry formulation products. This includes milling activities for solid formulations (granular and powder) in a dusty environment that will require the use of respirator and other personal protective equipment. Work Environment includes exposure to or working in or around moving cars, trucks, forklifts, equipment and machinery including a computer keyboard and mouse; uneven ground; excessive noise; extremes in temperature, humidity, or wetness; dust, gas, fumes, or chemicals; heights; operation of foot controls or repetitive foot movement. May be required to wear a respirator and other personnel protective equipment (including special visual or auditory equipment). May require occasional travel. Requires on-site laboratory base of operation. Frequency Definitions: Constant = Over 40% / Frequent = Up to 40% / Occasional = Up to 10% What We Offer We recognize that compensation and benefits play a crucial role in your career decisions. That's why we're dedicated to equitable pay practices and transparency in how we reward our employees. Base Salary: The estimated annual base salary for this position ranges from: $95,400 to $123,600 . Individual pay is based upon location, skills, experience, and other relevant factors. Incentives: All full-time employees are eligible for an incentive program or profit-sharing program in addition to their base salary. Benefits: High-quality healthcare coverage starting on day one, with options for medical (HSA/HRA), vision, and dental plans 5% company contribution to your 401(k), plus a quarterly discretionary bonus Immediate 100% vesting of all retirement contributions Financial assistance programs to support your goals Life and disability insurance for added security Generous paid time off, including vacation, holidays, and volunteer days Our Commitment to a Sustainable Future At Valent Group of Companies, we're proud to power a sustainable future through our work. Sustainability and corporate social responsibility (CSR) have been at the core of our culture since the beginning. Today, they continue to drive everything we do. Join us in making a meaningful impact and contributing to a better world. Valent U.S.A., Valent North America LLC, Valent BioSciences LLC and Mycorrhizal Applications LLC are an Equal Opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation and/or identity, national origin, citizenship, immigration status, disabilities, or protected veteran status. #LI-ONSITE

About the Company We are a seed-stage AI company building the industry standard for evaluating and benchmarking large language models on real enterprise tasks. About the Role As a Research Scientist, you will develop new benchmarks, methodologies, and evaluation pipelines that shape how cutting-edge models are assessed, compared, and deployed in production environments. Your work will directly influence model selection and safety decisions across foundation model labs, high-growth AI product companies, and Fortune-scale enterprises. Responsibilities Benchmarking & Model Analysis Evaluate newly released models as they launch (e.g., Gemini, DeepSeek, etc.) Run large-scale assessment workflows using internal evaluation infrastructure Compare model performance across enterprise-grade task categories Design New Benchmarks from Scratch Identify high-value model application domains through research exploration Construct datasets, including labeling strategy and workforce coordination Write short “white-paper-style” summaries explaining benchmark purpose, method, and findings Advance Automated Evaluation Methodologies Improve systems for scoring generated text beyond standard metrics Explore research in reference-free, rubric-based, and human-aligned evaluation Develop new techniques for reliability, consistency, and repeatability Cross-functional Collaboration Work closely with engineering to scale evaluation infra Partner with customers to refine evaluation relevance and task fit Influence product direction through research insights Qualifications 0-3 years post-grad experience (Master's, PhD, or equivalent applied research) Publications, preprints, or demos showing cutting-edge work Experience with diffusion models, NLP, multimodal, or benchmarking work Ability to operate independently with ambiguity Clean, maintainable research codebases Candidates from: top engineering/research universities applied AI startups well-regarded research internships Required Skills Built or contributed to a benchmark or evaluation methodology Experience in enterprise task model evaluation Stanford / top lab adjacency (per their historical hiring success) Preferred Skills Wants to publish as primary motivation Purely academic with slow timelines Big-tech culture fit concerns (Meta / Google / Salesforce specifically noted-but case-by-case) Pay range and compensation package Base Salary: up to $250K depending on background Equity: typically 0.3% - 0.5%, flexibility for exceptional candidates Rapid equity refresh possible based on impact Equal Opportunity Statement Visa sponsorship available. Relocation support. Health & dental coverage. Lunch + dinner provided, snacks & coffee. Unlimited PTO. Weekly happy hours with community guests. Team events (bowling, hiking, rock climbing, etc.). Swag program (hats, etc.). Work Environment & Culture In-person, San Francisco HQ (required). Core hours: 9-5, some teammates extend voluntarily. Most team members work 1 weekend day per week (flexible). High-ownership, low-ego, collaborative. Live demos Mondays, team lunch Thursdays, community Fridays. Early-stage pace, applied focus-not academic publishing. Tech Environment (while research-focused, exposure beneficial) Backend: Python / Django. Frontend: React + TypeScript. Infra: AWS. Evaluation frameworks + internal tooling. Why This Role Is Unique The company already collaborates with foundation model labs, high-growth AI vertical product companies, and Fortune 500 enterprises (not publicly facing). ChatGPT Vals AI $5M seed raised, runway of 2+ years at current burn. Only one research scientist is being hired-true founding impact. Opportunity to define industry standards for model trust, reliability, and certification. Positioned to become the rating agency for generative AI.

Join a Leading Applied Research Lab Pushing the Boundaries of Reinforcement Learning Are you passionate about advancing the frontiers of reinforcement learning (RL)? An innovative AI research lab is seeking talented and ambitious scientists to shape the next generation of RL techniques-especially where they intersect with large models and environment generation. About the Role As an AI Research Scientist focused on RL, you will: Develop novel optimization-based methods for automated RL environment generation Establish baselines for evaluating the quality and diversity of RL environments Design infrastructure to create dynamic environments from historical datasets and agent evaluations Drive your own research agenda, contributing directly to the progress of our platform and the broader AI community What We're Looking For PhD (or equivalent experience) in machine learning, computer science or a related field Strong publication record and/or evidence of research impact (open source, deployed systems, etc.) Deep expertise in reinforcement learning and machine learning fundamentals Proficient in Python and at least one modern ML framework (such as PyTorch or JAX) Bonus Points Experience with post-training large language models (LLMs) Demonstrated software engineering skills Ability to communicate research findings effectively to both technical and non-technical audiences

Series A company looking to hire a Sr. Applied RS with a good background in multi-agent reinforcement learning. The related challenge is figuring out how to use feedback from an objective function on (consumer) pricing to reinforce a multi-agent enterprise system (many components). Qualifications: Applied Research with MS or PhD in a technical field and 4 + years relevant industry experience Successful track record as a self-starter in 0->1 scenarios with a proven ability to take SOTA models into production Please note: Due to the selective nature of this service and the volume of applicants we typically receive from our job postings, a follow-up email will not be sent until a match is identified with one of the startup investments in our portfolio. About Us: Greylock is an early-stage investor in hundreds of remarkable companies including Airbnb, LinkedIn, Dropbox, Workday, Cloudera, Facebook, Instagram, Roblox, Coinbase, Palo Alto Networks, among others. More can be found about us here: ********************* We are full-time, salaried employees of Greylock who provide free candidate referrals/introductions to our active investments to help them grow/succeed (as one of the many services we provide).

A frontier-stage research group is building a new class of AI systems designed to reason, plan, and act across the physical world. Their mission is to create intelligent agents capable of experimenting, engineering, and constructing in ways that dramatically accelerate scientific and industrial progress. This team combines deep technical pedigree with real-world wins at scale, including major government-funded initiatives. They operate where advanced model research meets robotics, simulation, and automated engineering systems, offering the kind of impact only possible when first-principles science meets ambitious execution. Joining means stepping into a high-ownership environment where you shape core capabilities end-to-end, influence the direction of physical-world intelligence, and help build technology the world has never seen before. Why This Role Is Compelling Work on cutting-edge reasoning, planning, and tool-use models that directly control autonomous engineering systems. Push the limits of SFT, RLHF, DPO, verifier-guided RL, and long-horizon planning in a setting where your research immediately translates into real-world capability. Operate in a high-velocity research culture with exceptional peers across agent systems, simulation, data, and complex toolchains. Have outsized ownership in a small team tackling one of the most ambitious technical problems of this decade. Role Overview The team is looking for an LLM Research Scientist to pioneer next-generation reasoning and agent architectures. Your work will span model design, alignment strategies, structured tool orchestration, and experimentation with agents interacting across real engineering workflows. This position blends deep research with hands-on systems integration, offering both autonomy and scope to lead foundational progress. Key Responsibilities Develop advanced models and prompting systems for planning, multi-step reasoning, and structured tool use. Lead training initiatives across SFT, RLHF/DPO, verifier-guided RL, and modular expert architectures to strengthen robustness and controllability. Define schemas, tool-calling strategies, policy constraints, safety mechanisms, and recovery pathways for agent behavior. Partner closely with engineering, simulation, and data teams to test, train, and evaluate models embedded in real production-like toolchains. Qualifications Significant experience in LLM research, agent reasoning models, or structured tool-use frameworks. Strong background working with SFT, RLHF, DPO, or reinforcement-learning-from-verification methods. Demonstrated ability to design, analyze, and improve long-horizon behaviors and decomposition strategies. Comfortable working across ML research, systems engineering, and real-world experimentation in a fast-moving environment. A track record of excellence and ownership in technically demanding domains.

💡 What if your next role let you push the frontier of LLM planning and tool-use-building agents that don't just talk about the physical world, but act in it to engineer, experiment, and manufacture autonomously? 🚀 Our client - a hyper-talent-dense physical-AI startup backed by top-tier builders across frontier AI and deep tech - is hiring a Senior LLM Research Scientist (San Francisco / Redwood City, In-Person). They're building Physical Superintelligence: AI systems with general physical ability-the capacity to experiment, engineer, or manufacture anything. Instead of only learning from static data, their models generate new data through automated real-world experimentation at massive scale. The role: 🧠 Develop planning, reasoning, and structured tool-use models that power autonomous engineering agents 🧪 Lead SFT + preference optimization work (RLHF / DPO) to push capability and reliability 🛡️ Build verifier-guided RL + safety constraints for robust long-horizon agent behavior 🔧 Design tool-calling schemas, recovery logic, and policy constraints so agents can operate real toolchains 🤝 Partner across agent systems, data infra, simulation, and tooling teams to train and evaluate in production workflows ⚙️ High-ownership research + systems integration on core models and agent behavior Why join? 🌍 Real-world impact at national scale-accelerating physical discovery, not just model training 🏭 A uniquely scaled platform for learning with automated experimental facilities generating new feedback loops 💰 Competitive salary + meaningful equity 🚀 Tiny, elite team with extremely high technical bar and low ego 🏢 In-person, high-velocity environment split across SF + Redwood City 📩 Interested? Apply now!

located in San Francisco, CA Responsibilities of the Scientist/Sr. Scientist-Stem Cell Biology/Embryology: Design and execute experiments in stem cell differentiation, organoid generation, and tissue engineering. Innovate then execute experiments to generate and differentiate human stem cells, develop functional assays, assess and interpret experimental workflows Perform mammalian embryo dissections, tissue isolations, and culture experiments to study and model developmental processes. Apply principles of developmental biology and embryology to guide tissue maturation and patterning. Collaborate with biomaterials and engineering teams to integrate cells and tissues. Develop and optimize protocols for reproducible tissue generation and maintenance. Test novel stem cell culture conditions, sort, screen, expand and differentiate hi PSCs according to latest protocols and newly developed approaches. Requirements of the Scientist/Sr. Scientist-Stem Cell Biology/Embryology: PhD in biological sciences, stem cell biology, genetics or related field. 2+ years hands-on expertise in stem cell culture (iPSCs/ESCs). Hands-on experience with mammalian embryos, including dissections and culture. Experience in molecular biology and strong problem solving skills.

We are a group of people united by a strong purpose. We want you to get to know us, and Giuseppe, our very own artificial intelligence. We love good food, but above all, we love the planet, and that's why, to protect it, we reinvent the food industry, one delicious bite at a time, elevating what we eat, through our technology and based on plants. Our recipe has three mega-important components: science, technology, and of course, disruptive talents who work daily to create a better future. At NotCo we are not and do not seek to be the perfect company, but rather the right one. We are here to produce changes, and that is why we dare, fail, and sometimes achieve incredible successes. We are currently looking for a Product Development Scientist for our NotCo B2B Research & Development located in San Francisco, California, requiring an active on-site presence. This position will report to our R&D Sr. Team Lead and the incumbent will work cross-functionally to ensure R&D activities are successfully deployed locally. Responsible for the: Independently conducts day-to-day product development activities as directed by the manager across multiple projects. This includes supporting activities related to the full product lifecycle process (from product concept to successful commercial launch as needed)and supporting process development, scale-up and technology transfer Supports the design and execution of bench-top tests, pilot-plant trials and full-scale formulations to deliver high-quality food products that meet and exceed the sensory, cost, and other performance targets Proactively proposes and uses sensory and analytical analysis to guide and validate the development process Maintains detailed documentation, experiment tracking and outcomes, and documents finished goods and ingredient specifications Provides feedback to project lead regarding relevant technical and process information Communicates proactively and effectively with cross-functional teams, clearly articulating perspectives and trade-offs related to new product development goals Utilizes NotCo's proprietary AI technology to develop and improve food products Supports formula validation activities as well as process development, scale-up and technology transfer Engages in client communications and workshops, bringing technical Maintains detailed documentation across all R&D activities in a timely manner Qualifications / Requirements: Bachelor's degree in Food Engineering, Food Science, Engineering in Biotechnology or a similar discipline. 2 + years of Food R&D experience is desired, preferably across both food and beverage categories. Be agile, adaptable, and thrive in a dynamic and changing culture; works relentlessly to overachieve, anticipate obstacles, and create plans to overcome them. Adapts easily to changing priorities and direction based on new project learnings and team priorities. Demonstrated competency to effectively communicate (oral & written) cross-functionally with solid collaboration skills. Comfortable in client-facing situations and able to communicate complex topics clearly and simply. Excel in a startup environment, is excited to create new procedures and processes from scratch and has a strong entrepreneurial mindset. Be a problem solver, have a general manager mindset, and take the initiative to get the job done Possess strong planning, project management, and execution skills, and the ability to articulate where and how you have used them. Rigorous data-driven/analytical capability and ability and presence to present data effectively to a leadership team Work well in teams and cross-functional groups in a matrixed environment, both regionally and globally Possesses strong computer skills, including a high level of proficiency in MS Office, specifically Excel Authorization to work in the U.S. is required Ability to travel up to 50% of the time, including international travel and extended trips. NotCo is committed to fair and equitable compensation practices. The pay range for this role is $65,000 - $75,000. Actual compensation packages are based on several factors that are unique to each candidate, including but not limited to skill set, depth of experience, certifications, and specific work location. This may be different in other locations due to differences in the cost of labor. We are an equal opportunity employer. All applicants will be considered for employment without attention to race, color, religion, sex, sexual orientation, gender identity, national origin, veteran or disability status.