research scientist - RL
Associate scientist job in Santa Rosa, 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
Founding ML Scientist
Associate scientist job in San Francisco, CA
Stage: Seed
Team Size: < 10
We're looking for an Applied RS who can run the gamut of ML from infra to modeling and own the entire ML pipeline--taking advanced models into production. Our ideal candidate will be looking to build a co-pilot product from the ground up: helping to drive everything from key architectural decisions, applying SOTA methods, and shipping advanced production models in close collaboration with the founders. In key role, you will have real product ownership and the chance to influence not just what gets built, but how it gets built in a true 0->1 scenario.
If you have 5+ years of experience in Machine Learning (infra and modeling) with 1+ years post-training LLM's and are thinking about starting your own company someday, this could be a great entry-way for you. Not only would you get real-world experience with something so early, but you'd get a chance to make a name for yourself with our investment team as well (making it much easier to get a chance to pitch us on your own idea in the future).
About Greylock
Greylock is a 1st-tier, early-stage venture capital firm that partners with exceptional founders at the seed and Series A stages. Our mission is to help realize rare potential - backing category-defining companies such as Figma, Anthropic, Ramp, Abnormal Security, Rubrik, Airbnb, LinkedIn, Roblox, Dropbox, and Coinbase.
About the Greylock Recruiting Team
As full-time, salaried employees of Greylock, our team provides free candidate referrals and introductions to our active portfolio companies. Combined, we bring over 125 years of in-house recruiting experience across startups and large-scale tech companies
Research Scientist - Data
Associate scientist job in Santa Rosa, CA
โก Research Scientist - Data focus
๐ Foundation Models, AI Research Institute
๐ San Francisco Bay Area, USA
๐ธ $200,000 - $350,000 salary + bonus
Come join a revolutionary AI research lab in SF Bay Area that is poised to develop & publish high-impact breakthroughs in GenAI - across LLMs and Multimodal AI.
As part of the team, you'll work at the intersection of data, large-scale training, and foundation model innovation. You will collaborate with world-class researchers, data scientists, and engineers to solve critical challenges in creating robust, scalable, and reasoning-capable LLMs. Your research will shape the way data is curated, processed, and leveraged to train the next generation of intelligent systems.
Responsibilities:
Lead research on data-centric approaches for LLMs, including pretraining corpus design, data valuation, and speculative decoding strategies.
Develop pipelines to process challenging data sources into structured and reproducible training datasets.
Build and optimize agentic data pipelines, integrating retrieval, self-curation, and multi-agent feedback for high-quality training and evaluation data.
Collaborate with researchers on alignment and reasoning-focused training that leverage data-driven approaches for improving LLM capabilities.
Prototype and deploy evaluation frameworks to measure data quality, coverage, and downstream impact on LLM reasoning.
Publish findings at top-tier venues (e.g., NeurIPS, ICLR, ACL, EMNLP) and represent the institute at international conferences.
Contribute to open-source tools, datasets, and benchmarks that advance the global foundation model research community.
Requirements:
Master's degree in Computer Science, Data Science, or a related technical field (PhD strongly preferred)
Experience collecting and curating high-quality text data including multi-lingual data.
Hands-on experience with large-scale dataset curation and preprocessing for ML/LLM training.
Prior works synthesizing complex datasets. Code, math, and agentic data are higher priority
Experience with ML infrastructure for scalable training, evaluation, and debugging.
Experience at the intersection of data and post-training (RL/SFT)
Proven ability to independently drive research questions related to data quality, scaling, or reasoning.
Preferred Experience:
Experience with retrieval-augmented generation (RAG), agentic data pipelines, or reasoning benchmarks.
Contributions to speculative decoding, self-curation, or reinforcement learning from synthetic data.
Background in knowledge graphs, semantic search, or indexing systems.
Strong publication record in leading AI conferences.
Prior contributions to open-source ML data tools or benchmarks.
Prior work on speculative decoding/contributions to LLM serving engines
Prior work on training LLM-as-a-judge
Deep expertise with tokenization/training tokenizers
Why apply:
Opportunity to build out a new division at the forefront of AI innovation
FAANG competitive salary & package
Work alongside superstars from FAANG labs & leading AI companies
Medical, Dental and Vision Insurance
Relocation package available
๐ San Francisco Bay Area, USA
๐ง Interested in applying? Please click on the โEasy Apply' button or alternatively email me your resume at
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Research Scientist
Associate scientist job in Santa Rosa, CA
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!
Senior LLM Research Scientist
Associate scientist job in San Francisco, CA
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.
Senior RL Research Scientist
Associate scientist job in San Francisco, CA
๐ก 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?
๐ 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 โexperiment factories.โ
The role:
๐ฏ Own RL for real-world tool control and long-horizon workflows across biology, chemistry, materials, and robotics
๐งช Build RL environments grounded in physics, simulation, and digital twins-not toy benchmarks
๐ก๏ธ Design safe / constrained RL + verifier-integrated rewards to keep agents reliable in high-stakes domains
๐ Drive offline โ online transitions and evaluation pipelines as agents learn from and act on real telemetry
๐ค Partner across LLM, agent systems, simulation, and physical-tooling teams to deploy policies into production workflows
โ๏ธ High-ownership algorithm + systems work where you shape the foundations of physical-AI autonomy
Why join?
๐ Work at the frontier of real-world impact-from multi-cancer early detection to general scientific discovery
๐ญ Operate on a uniquely scaled platform: 20k+ sq ft automated facilities producing real experimental feedback loops
๐ฐ Competitive salary + meaningful equity
๐ Tiny, world-class team with a โbest-person-you've-worked-withโ talent bar
๐ข In-person, high-velocity environment with deep collaboration across SF + Redwood City
๐ฉ Interested? Apply now
Staff Research Associate 2 Non-exempt - Hopland, CA, Job ID 80236
Associate scientist job in Hopland, CA
This position leads, under Director and PI supervision, most aspects of field research activities at the Hopland Research and Extension Center (HREC). The primary focus of this position is on project management of up to 20 different research projects in diverse fields of study within agriculture and natural resources. This range includes plant science, soil science, animal science, wildlife ecology, oak woodland ecology, fire science, rangeland management, and hydrology. This position interacts with Primary Investigators (PIs) throughout the research process, from idea generation through project creation and refinement including design planning, plot construction, project implementation and management, data collection, analysis, and reporting. This position assists with duties related to livestock management of HREC's sheep flock, and all field maintenance activities required to keep a 5,358-acre research center functioning. In addition, this position will assist with or lead public outreach activities and extension event.
This position is a career appointment that is 100% fixed.
Pay Scale: $28.88/hour to $36.62/hour
Job Posting Close Date:
This job is open until filled. The first application review date will be 09/03/2025.
The next application review date will be 09/26/2025.
Key Responsibilities:
70%
Serve as primary lead, under supervision of Superintendent, in conducting field
research activities at HREC.
Perform technical observations in multiple fields of scientific investigation.
Install, operate, and maintain field and laboratory instruments.
Performs Ag Technician duties, as related to research activities, when needed.
Serve as lead for supervising and directing undergrads and field assistants in data
collection and fieldwork related duties.
Manage multiple research projects simultaneously, organizing timelines and schedules to ensure research activities are conducted on time with precision and accuracy.
Interface with PIs to develop and refine projects, and through an iterative feedback
process ensure that theoretical ideas are turned into workable experimental designs.
Coordinate with, and occasionally serve as lead for, facilities staff to implement project designs into workable field installations.
Meet with researchers, both on and off site, to ensure coordination of current activities, address concerns, find solutions, and map out future goals.
Develop innovative solutions to problems that arise in enacting projects, and work with the Superintendent and PI to modify, vary, or adapt standard procedures to meet project needs.
Collaborate with Director, PIs, and Community Education Specialist to write and submit grant applications.
Participate in annual Research Advisory Committee process of Soliciting, reviewing,
refining, and approving research projects.
Responsible for application, supervision and reporting of herbicides, pesticides,
and fungicides.
Tractor and machinery duties as needed for project management and field work in
vineyard and research plots, and around barns and pastures.
10%
Works with administration, Community Education Specialist, and other staff, to plan and execute a broad range of extension activities, including researcher and professional field days, school trips, and intensive educational workshops with other collaborators.
Develop original content or refine existing curriculum to present information for a range of audiences based on research results generated here at HREC.
Demonstrate procedures used in research and field activities.
10%
Maintenance duties as required for maintenance of the property including: fence repair, plumbing repair, brush clearing, road repair, facility cleaning and repair, mowing around barns and infrastructure.
10%
Provide information to Center Director, Superintendent, Animal Techs, and Ag Techs
regarding grazing/non-grazing and prescribed burning needs of research when annual
grazing and burning plans are developed.
On a backup basis, assist with animal care (livestock, guard dogs, wildlife) including: shepherding, herd and individual animal health assessment, vaccinations, lambing, breeding, field sampling, and predator management.
Requirements:
Broad knowledge of scientific research principles, procedures, and protocols.
Specific knowledge in and experience with agricultural and natural resource related fields of scientific inquiry, including but not limited to plant science, animal science, wildlife ecology, rangeland management and ecology, hydrology, and soil science.
Experience and skill with conducting specialized field sampling and data collection and analysis, including work with live animals, remote field plots, electronic sensing equipment, and laboratory equipment.
Excellent communication skills, written and spoken, including the specific ability to effectively discuss complicated technical and scientific questions. Ability to tailor communication to the specific audience, including a range from PIs to grade-schoolers and laypeople.
Proficiency in basic computer programs including: MS Office, mapping programs, web research, document sharing.
Preferred Skills:
Associate/Bachelor's Degree and/or equivalent experience
Knowledge of pest control principles, pesticide application techniques and safety, and relevant regulations. Qualified Applicator Certificate required (can be earned within 6 months of hire).
Proven skill and experience with a broad range of machinery including but not limited to agricultural tractors and implements, pruning tools (chainsaws, loppers), on and off-road vehicles, trailers, and some heavy equipment.
Skills and knowledge of handling research animals to minimize stress including domestic livestock and wildlife. Experience with veterinary techniques.
Special Conditions of Employment:
Must possess valid California Driver's License to drive a County or University vehicle. Ability and means to travel on a flexible schedule as needed, proof of liability damage insurance on vehicle used is required. Reimbursement of job-related travel will be reimbursed according to University policies.
Required to hold valid driver's license, have a driving record that is in accordance with local policies/procedures, and/or enroll in the California Employer Pull Notice Program.
The University reserves the right to make employment contingent upon successful completion of the background check. This is a designated position requiring a background check and may require fingerprinting due to the nature of the job responsibilities. UC ANR does hire people with conviction histories and reviews information received in the context of the job responsibilities.
As of January 1, 2014, ANR is a smoke- and tobacco-free environment in which smoking, the use of smokeless tobacco products, and the use of unregulated nicotine products (e-cigarettes), is strictly prohibited.
As a condition of employment, you will be required to comply with the University of California Policy on Vaccination Programs, as may be amended or revised from time to time. Federal, state, or local public health directives may impose additional requirements.
Misconduct Disclosure Requirement: As a condition of employment, the final candidate who accepts a conditional offer of employment will be required to disclose if they have been subject to any final administrative or judicial decisions within the last seven years determining that they committed any misconduct; received notice of any allegations or are currently the subject of any administrative or disciplinary proceedings involving misconduct; have left a position after receiving notice of allegations or while under investigation in an administrative or disciplinary proceeding involving misconduct; or have filed an appeal of a finding of misconduct with a previous employer.
a. "Misconduct" means any violation of the policies or laws governing conduct at the applicant's previous place of employment, including, but not limited to, violations of policies or laws prohibiting sexual harassment, sexual assault, or other forms of harassment, discrimination, dishonesty, or unethical conduct, as defined by the employer. For reference, below are UC's policies addressing some forms of misconduct:
UC Sexual Violence and Sexual Harassment Policy
UC Anti-Discrimination Policy
Abusive Conduct in the Workplace
To apply, please visit: https://careerspub.universityofcalifornia.edu/psc/ucanr/EMPLOYEE/HRMS/c/HRS_HRAM_FL.HRS_CG_SEARCH_FL.GBL?Page=HRS_APP_JBPST_FL&JobOpeningId=80236&PostingSeq=1&SiteId=17&language Cd=ENG&FOCUS=Applicant
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Scientist/Sr. Scientist-Stem Cell Biology/Embryology
Associate scientist job in Santa Rosa, CA
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.
Product Development Scientist
Associate scientist job in Santa Rosa, CA
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.
Research Associate III/ Senior Research Associate (Biodesigner), Assay Development / Bioanalytical Development
Associate scientist job in Santa Rosa, CA
Amber Bio is a biotechnology company pioneering new gene editing modalities using multi-kilobase edits to reach previously undruggable patient populations. Founded by pioneers in the CRISPR field from leading institutions for gene editing research, the company is developing a first-of-its-kind RNA editing platform that can correct thousands of bases at once, thereby correcting genetic mutations safely and reversibly. If you are interested in building a new frontier in genetic medicine, we welcome you to apply.
Job Description: Research Associate III/ Senior Research Associate (Biodesigner), Assay Development / Bioanalytical Development
Position Overview: The Research Associate III/ Senior Research Associate in Assay Development and Bioanalytical Development will play a critical role in the development, qualification, and validation of bioanalytical methods to support our RNA editing programs. The successful candidate will work under the guidance of an assay development scientist to develop custom assays for the analysis of samples, including AAVs, cells, and tissues. This role also involves drafting key documents such as Standard Operating Procedures (SOPs) and method development reports.
Key Responsibilities:
Method Development, Qualification, and Validation:
Support the development, qualification, and validation of bioanalytical methods in accordance with regulatory guidelines.
Develop, optimize, and execute robust bioanalytical methods for the characterization, release, and stability testing of Amber's gene therapy.
Sample Analysis:
Support drug absorption, distribution, metabolism, and excretion studies.
Perform analysis of AAVs, cells, and tissues to support various stages of research and development.
Lead efforts to streamline and optimize sample storage and processing, as well as establishing and maintaining critical reagent stocks and cell banks.
Documentation Reporting:
Draft and review key documents such as SOPs, method development, and sample analysis reports.
Maintain accurate and detailed records of all experiments and analyses.
Collaboration & Communication
Collaborate with manufacturing and preclinical teams to support pipeline needs.
Communicate and present findings clearly to internal stakeholders.
Qualifications:
B.A./B.S. or M.S. in Molecular Biology, Biochemistry, Analytical Chemistry, or a related field.
3+ years of experience in bioanalytical and assay development in the biotechnology or pharmaceutical industry.
Demonstrated strong proficiency in a wide range of molecular biology techniques such as molecular cloning, DNA/RNA extractions, RT-qPCR, dd PCR, and ELISA.
Experience with cell-based assays and detection methods such as fluorescence, luminescence, and ECL.
Hands-on experience using laboratory automated systems (e.g., liquid handlers, extraction robotics, etc.).
Background in RNA-based therapies is highly desirable.
Experience writing SOPs and reports supporting IND filings (e.g. development, qualification sample analysis reports, etc.)
Knowledge of FDA and ICH guidelines for method development, qualification, and validation.
Prior history in compiling and analyzing data and generating reports that are routinely presented to project teams.
Ability to work effectively in a collaborative, fast-paced environment.
Preference will be given to those who display:
High motivation, with a strong work ethic and dedication to generating impact.
Attention to detail, with the ability to extract deep insights from data.
Ability to go from ideation to data in an independent fashion.
Long-term personal vision with defined career goals.
Team-oriented thinking.
Demonstrated excellence in small team environments, including a โno task is too smallโ attitude.
If you have a passion for advancing gene editing technologies and desire to be part of a pioneering biotech company, we encourage you to apply and join our ambitious team.
Please apply directly through LinkedIn.
Amber Bio is an equal-opportunity employer and encourages applications from candidates of diverse backgrounds. We value diversity and are committed to creating an inclusive and supportive work environment for all employees.
research scientist - RL
Associate scientist job in San Francisco, 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
Founding ML Scientist
Associate scientist job in Santa Rosa, CA
Stage: Seed
Team Size: < 10
We're looking for an Applied RS who can run the gamut of ML from infra to modeling and own the entire ML pipeline--taking advanced models into production. Our ideal candidate will be looking to build a co-pilot product from the ground up: helping to drive everything from key architectural decisions, applying SOTA methods, and shipping advanced production models in close collaboration with the founders. In key role, you will have real product ownership and the chance to influence not just what gets built, but how it gets built in a true 0->1 scenario.
If you have 5+ years of experience in Machine Learning (infra and modeling) with 1+ years post-training LLM's and are thinking about starting your own company someday, this could be a great entry-way for you. Not only would you get real-world experience with something so early, but you'd get a chance to make a name for yourself with our investment team as well (making it much easier to get a chance to pitch us on your own idea in the future).
About Greylock
Greylock is a 1st-tier, early-stage venture capital firm that partners with exceptional founders at the seed and Series A stages. Our mission is to help realize rare potential - backing category-defining companies such as Figma, Anthropic, Ramp, Abnormal Security, Rubrik, Airbnb, LinkedIn, Roblox, Dropbox, and Coinbase.
About the Greylock Recruiting Team
As full-time, salaried employees of Greylock, our team provides free candidate referrals and introductions to our active portfolio companies. Combined, we bring over 125 years of in-house recruiting experience across startups and large-scale tech companies
Research Scientist
Associate scientist job in San Francisco, CA
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 Scientist - Vision Data Infrastructure
Associate scientist job in San Francisco, CA
โก Research Scientists/Engineers (all levels)
๐ Focus on Vision Data Infrastructure
๐ค Fundamental AI Research Institute
๐ San Francisco Bay Area, USA
๐ธ $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
๐ San Francisco Bay Area, USA
๐ง Interested in applying? Please click on the โEasy Apply' button or alternatively email me your resume at
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Senior RL Research Scientist
Associate scientist job in San Francisco, CA
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
โฆthis 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
Senior LLM Research scientist
Associate scientist job in San Francisco, CA
๐ก 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?
๐ 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:
๐ง Develop planning, reasoning, and structured tool-use models that power autonomous engineering agents
๐งช Lead SFT + preference optimization work (RLHF / DPO) to push capability and reliability
๐ก๏ธ Build verifier-guided RL + safety constraints for robust long-horizon agent behavior
๐ง Design tool-calling schemas, recovery logic, and policy constraints so agents can operate real toolchains
๐ค Partner across agent systems, data infra, simulation, and tooling teams to train and evaluate in production workflows
โ๏ธ High-ownership research + systems integration on core models and agent behavior
Why join?
๐ Real-world impact at national scale-accelerating physical discovery, not just model training
๐ญ A uniquely scaled platform for learning with automated experimental facilities generating new feedback loops
๐ฐ Competitive salary + meaningful equity
๐ Tiny, elite team with extremely high technical bar and low ego
๐ข In-person, high-velocity environment split across SF + Redwood City
๐ฉ Interested? Apply now!
Scientist/Sr. Scientist-Stem Cell Biology/Embryology
Associate scientist job in San Francisco, CA
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.
Product Development Scientist
Associate scientist job in San Francisco, CA
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.
Research Associate III/ Senior Research Associate (Biodesigner), Assay Development / Bioanalytical Development
Associate scientist job in San Francisco, CA
Amber Bio is a biotechnology company pioneering new gene editing modalities using multi-kilobase edits to reach previously undruggable patient populations. Founded by pioneers in the CRISPR field from leading institutions for gene editing research, the company is developing a first-of-its-kind RNA editing platform that can correct thousands of bases at once, thereby correcting genetic mutations safely and reversibly. If you are interested in building a new frontier in genetic medicine, we welcome you to apply.
Job Description: Research Associate III/ Senior Research Associate (Biodesigner), Assay Development / Bioanalytical Development
Position Overview: The Research Associate III/ Senior Research Associate in Assay Development and Bioanalytical Development will play a critical role in the development, qualification, and validation of bioanalytical methods to support our RNA editing programs. The successful candidate will work under the guidance of an assay development scientist to develop custom assays for the analysis of samples, including AAVs, cells, and tissues. This role also involves drafting key documents such as Standard Operating Procedures (SOPs) and method development reports.
Key Responsibilities:
Method Development, Qualification, and Validation:
Support the development, qualification, and validation of bioanalytical methods in accordance with regulatory guidelines.
Develop, optimize, and execute robust bioanalytical methods for the characterization, release, and stability testing of Amber's gene therapy.
Sample Analysis:
Support drug absorption, distribution, metabolism, and excretion studies.
Perform analysis of AAVs, cells, and tissues to support various stages of research and development.
Lead efforts to streamline and optimize sample storage and processing, as well as establishing and maintaining critical reagent stocks and cell banks.
Documentation Reporting:
Draft and review key documents such as SOPs, method development, and sample analysis reports.
Maintain accurate and detailed records of all experiments and analyses.
Collaboration & Communication
Collaborate with manufacturing and preclinical teams to support pipeline needs.
Communicate and present findings clearly to internal stakeholders.
Qualifications:
B.A./B.S. or M.S. in Molecular Biology, Biochemistry, Analytical Chemistry, or a related field.
3+ years of experience in bioanalytical and assay development in the biotechnology or pharmaceutical industry.
Demonstrated strong proficiency in a wide range of molecular biology techniques such as molecular cloning, DNA/RNA extractions, RT-qPCR, dd PCR, and ELISA.
Experience with cell-based assays and detection methods such as fluorescence, luminescence, and ECL.
Hands-on experience using laboratory automated systems (e.g., liquid handlers, extraction robotics, etc.).
Background in RNA-based therapies is highly desirable.
Experience writing SOPs and reports supporting IND filings (e.g. development, qualification sample analysis reports, etc.)
Knowledge of FDA and ICH guidelines for method development, qualification, and validation.
Prior history in compiling and analyzing data and generating reports that are routinely presented to project teams.
Ability to work effectively in a collaborative, fast-paced environment.
Preference will be given to those who display:
High motivation, with a strong work ethic and dedication to generating impact.
Attention to detail, with the ability to extract deep insights from data.
Ability to go from ideation to data in an independent fashion.
Long-term personal vision with defined career goals.
Team-oriented thinking.
Demonstrated excellence in small team environments, including a โno task is too smallโ attitude.
If you have a passion for advancing gene editing technologies and desire to be part of a pioneering biotech company, we encourage you to apply and join our ambitious team.
Please apply directly through LinkedIn.
Amber Bio is an equal-opportunity employer and encourages applications from candidates of diverse backgrounds. We value diversity and are committed to creating an inclusive and supportive work environment for all employees.
Research Scientist - Data
Associate scientist job in San Francisco, CA
โก Research Scientist - Data focus
๐ Foundation Models, AI Research Institute
๐ San Francisco Bay Area, USA
๐ธ $200,000 - $350,000 salary + bonus
Come join a revolutionary AI research lab in SF Bay Area that is poised to develop & publish high-impact breakthroughs in GenAI - across LLMs and Multimodal AI.
As part of the team, you'll work at the intersection of data, large-scale training, and foundation model innovation. You will collaborate with world-class researchers, data scientists, and engineers to solve critical challenges in creating robust, scalable, and reasoning-capable LLMs. Your research will shape the way data is curated, processed, and leveraged to train the next generation of intelligent systems.
Responsibilities:
Lead research on data-centric approaches for LLMs, including pretraining corpus design, data valuation, and speculative decoding strategies.
Develop pipelines to process challenging data sources into structured and reproducible training datasets.
Build and optimize agentic data pipelines, integrating retrieval, self-curation, and multi-agent feedback for high-quality training and evaluation data.
Collaborate with researchers on alignment and reasoning-focused training that leverage data-driven approaches for improving LLM capabilities.
Prototype and deploy evaluation frameworks to measure data quality, coverage, and downstream impact on LLM reasoning.
Publish findings at top-tier venues (e.g., NeurIPS, ICLR, ACL, EMNLP) and represent the institute at international conferences.
Contribute to open-source tools, datasets, and benchmarks that advance the global foundation model research community.
Requirements:
Master's degree in Computer Science, Data Science, or a related technical field (PhD strongly preferred)
Experience collecting and curating high-quality text data including multi-lingual data.
Hands-on experience with large-scale dataset curation and preprocessing for ML/LLM training.
Prior works synthesizing complex datasets. Code, math, and agentic data are higher priority
Experience with ML infrastructure for scalable training, evaluation, and debugging.
Experience at the intersection of data and post-training (RL/SFT)
Proven ability to independently drive research questions related to data quality, scaling, or reasoning.
Preferred Experience:
Experience with retrieval-augmented generation (RAG), agentic data pipelines, or reasoning benchmarks.
Contributions to speculative decoding, self-curation, or reinforcement learning from synthetic data.
Background in knowledge graphs, semantic search, or indexing systems.
Strong publication record in leading AI conferences.
Prior contributions to open-source ML data tools or benchmarks.
Prior work on speculative decoding/contributions to LLM serving engines
Prior work on training LLM-as-a-judge
Deep expertise with tokenization/training tokenizers
Why apply:
Opportunity to build out a new division at the forefront of AI innovation
FAANG competitive salary & package
Work alongside superstars from FAANG labs & leading AI companies
Medical, Dental and Vision Insurance
Relocation package available
๐ San Francisco Bay Area, USA
๐ง Interested in applying? Please click on the โEasy Apply' button or alternatively email me your resume at
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