Research Scientist
Associate scientist job in San Francisco, CA
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.
AI/ML Scientist
Associate scientist job in San Mateo, CA
AI/ML Scientist - Build the Future of Physics AI- $250,000 to $275,000 Salary
You will be part researcher, part builder, part pioneer, someone who thrives at the intersection of machine learning and physics based simulation.
The platform is built on massively scalable, cloud native simulation technology that makes it possible to run thousands of high fidelity simulations quickly and easily. This foundation unlocks something big, enabling the generation of large scale datasets that power the next generation of ML models across industries.
You will be on the front lines of building and productizing new machine learning approaches for physics based problems, from CFD to thermal simulation. Your work will not just live in a paper, it will deliver measurable value to customers, shape new product capabilities, and push the boundaries of what is possible in Physics AI.
You know that rush when your work goes from experiment to production, when the models perform, the results hold up, and you can see the impact firsthand? That is what this role is about.
Ready to shape the future of Physics AI? Let's talk.
No up to date resume required.
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
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
⚡ 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
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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
💡 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
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.
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 “no task is too small” 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.
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 Scientist
Associate scientist job in Santa Rosa, CA
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.
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 - Data
Associate scientist job in Santa Rosa, CA
⚡ Research Scientist - Data focus
💊 Foundation Models, AI Research Institute
🌎 San Francisco Bay Area, USA
💸 $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
🌎 San Francisco Bay Area, USA
📧 Interested in applying? Please click on the ‘Easy 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 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
…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
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.
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 “no task is too small” 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.
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.