San Francisco, California, United States · On-site
$250k–$450k/yr
About AfterQuery AfterQuery is an applied research lab curating data solutions for foundation model development. We serve every frontier AI lab with the mission of delivering the best data to power the best models. In do…
Skills: LLM Training, Evaluation Methodologies, SFT, RL-based Post-training, Experimental Design
San Francisco, California, United States · Hybrid
$150k–$210k/yr
ABOUT ABUNDANT As the need for scaling data becomes the core bottleneck to progress, moving from general knowledge to domain expertise, and from chatbots to agents. Abundant is solving this by designing and operating sim…
Skills: Model Capability Design, Literature Review, Experimentation, Benchmarking, Data Pipeline Management
San Francisco, California, United States · Hybrid
$200k–$500k/yr
ABOUT ABUNDANT AI models rely on two fundamental ingredients: compute and data. Abundant is building the NVIDIA of training data. NVIDIA, the leader in compute, has a peak market cap of $5T and generated $130B in revenue…
Skills: Model Reasoning, Data Strategy, Model Alignment, Post-training, Distillation
San Francisco, California, United States · Hybrid
ABOUT ABUNDANT As the need for scaling data becomes the core bottleneck to progress, moving from general knowledge to domain expertise, and from chatbots to agents. Abundant is solving this by designing and operating sim…
Skills: Platform Engineering, Simulation Infrastructure, Reinforcement Learning, Large Language Models, AI Agents
San Francisco, California, United States · Remote OK
$86k–$108k/yr
Make an Impact from Day One At SCIENION, you’ll work hands-on with advanced life science technologies that help customers push the boundaries of research and innovation. As a Field Service Engineer, you will install, mai…
Skills: System Installation, Preventive Maintenance, Troubleshooting, Technical Support, Customer Training
San Francisco, California, United States · On-site
$220k–$405k/yr
Perplexity is seeking energetic researchers and engineers to join our Secure Intelligence Institute (SII), Perplexity's flagship research center for advancing security, privacy, and trust in frontier intelligence. SII’s …
Skills: AI Security, Privacy Research, Threat Modeling, Python, Systems Security
San Francisco, California, United States · On-site
$220k–$405k/yr
Perplexity is seeking energetic engineers to join our highly driven Agents engineering team. The Agents team consists of backend, full-stack, and AI/ML engineers who collaborate to build delightful agentic experiences wi…
Skills: Python, TypeScript, Go, Rust, Context Engineering
San Francisco, California, United States · Hybrid
$130k–$190k/yr
Wanna join the adventure? Are you passionate about spacecraft attitude control, guidance, and mission performance? If so, this is the perfect role for you! Loft flies multiple satellites per year and is building the next…
Skills: Attitude Dynamics, Guidance and Control, On-orbit Operations, Python, ADCS Performance
San Francisco, California, United States · On-site
$38/hr–$48/hr
We are so glad you are interested in joining Sutter Health! Organization: CPMC-California Pacific Med Center Davies Position Overview: Integrates knowledge, theory and practice to properly execute procedures in assigned …
Skills: Specimen Handling, Tissue Gross Examination, Laboratory Operations, Quality Assurance, Specimen Preparation
San Francisco, California, United States · On-site
$81/hr–$110/hr
The UCSF Prenatal Diagnostic Center provides comprehensive counseling, screening and diagnostic testing for fetal disorders. The decision to make use of these services is unique for each woman and partner. Therefore, we …
Skills: Diagnostic Ultrasound, Fetal Anatomy Imaging, Amniocentesis Guidance, Chorionic Villus Sampling Guidance, Quality Control
San Francisco, California, United States · On-site
The Clinical Research Coordinator will perform independently or with general direction at the fully operational journey level of the series to execute, manage, and coordinate research protocols, as directed by the Clinic…
Skills: Clinical Research Coordination, Data Management, Regulatory Compliance, Protocol Management, Patient Recruitment
San Francisco, California, United States · On-site
About Nudge At Nudge, our mission is to develop the best technology for interfacing with the brain to improve people's lives. We're starting with an approach that we believe can help the most people the fastest, and also…
Skills: MRI Operation, Neuromodulation Systems, Participant Safety, Protocol Compliance, Data Collection
San Francisco, California, United States · Hybrid
$347k–$490k/yr
About the Team The Core Models team helps shape how OpenAI’s frontier models are built, measured, and launched. We work across Research, Engineering, Model Design, Data Science, and Product to turn advances in model capa…
Skills: Product Management, Machine Learning Platforms, Information Retrieval, Model Evaluation, Data Systems
San Francisco, California, United States · On-site
$163k–$221k/yr
We are rebuilding biotech for the AI era. When a breakthrough is delayed, the world waits. Getting a molecule from discovery to patients, or a crop from lab to field, involves thousands of slow, manual, disconnected step…
Skills: Product Management, Technical Product Management, Machine Learning, Artificial Intelligence, API Design
San Francisco, California, United States · On-site
$140k–$215k/yr
What We're Building: We have been quietly building the foundational layers of our Physical AI Scientist platform: 🤖 Physical AI that can operate scientific instruments with human-level dexterity. 🧪 Scientific AI that c…
Skills: Customer Relationship Management, Strategic Consulting, Technical Deployment, Bioengineering, Wet Lab Workflows
San Francisco, California, United States · Remote OK
$225k–$275k/yr
About us Edison Scientific builds and deploys AI scientist agents to accelerate science and the development of new medicines. We are an ambitious team run by scientists and engineers from leading institutions across biol…
Skills: Enterprise Sales, Strategic Partnerships, Account Planning, Pipeline Management, Negotiation
San Francisco, California, United States · Remote OK
$180k–$240k/yr
About us Edison Scientific builds and deploys AI scientist agents to accelerate science and the development of new medicines. We are an ambitious team run by scientists and engineers from leading institutions across biol…
Skills: Customer Success, Technical Account Management, Program Leadership, Drug Discovery Knowledge, Biopharma R&D
San Francisco, California, United States · Remote OK
$200k–$275k/yr
About us Edison Scientific builds and deploys AI scientist agents to accelerate science and the development of new medicines. We are an ambitious team run by scientists and engineers from leading institutions across biol…
Skills: GTM Strategy, Revenue Operations, Sales Operations, Business Operations, CRM Architecture
San Francisco, California, United States · On-site
$175k–$240k/yr
About us Edison Scientific builds and deploys AI scientist agents to accelerate science and the development of new medicines. We are an ambitious team run by scientists and engineers from leading institutions across biol…
Skills: Python, Backend Engineering, Frontend Development, API Design, FastAPI
San Francisco, California, United States · On-site
$175k–$240k/yr
About us Edison Scientific builds and deploys AI scientist agents to accelerate science and the development of new medicines. We are an ambitious team run by scientists and engineers from leading institutions across biol…
Skills: Python, Node.js, FastAPI, REST, GraphQL
Sign up with Clera and we'll reach out the moment a role actually fits you — no more spraying applications into the void.
Design and execute controlled SFT and RL experiments to measure the impact of datasets on model behavior and performance. Collaborate with partner labs to provide evidence of model improvements and publish technical reports and research.
Requires strong familiarity with LLM training and evaluation methodologies with a focus on data quality and structure. Ideal candidates have undergraduate or master's research experience but have not completed a PhD.
AfterQuery is an applied research lab curating data solutions for foundation model development.
We serve every frontier AI lab with the mission of delivering the best data to power the best models. In doing so, we can make expertise that once took a lifetime to build available to anyone who needs it. Our customers are the ones building the foundation models themselves and our work sits directly in the loop of how those systems improve.
This is a rare opportunity to join a company at a defining moment in AI. Since raising our $30M Series A at a $300M valuation, AfterQuery has grown well over a $100M revenue run rate.
We're based in San Francisco and backed by leading investors including Altos Ventures, BoxGroup, and Y Combinator and angels from Google DeepMind, OpenAI, Anthropic, Meta Superintelligence Labs, and Microsoft AI.
Your job is to prove that our data works. You will design and run training experiments that isolate the impact of our datasets on model behavior. This includes SFT and RL-based post-training, where you’ll measure how different data sources shift capability, generalization, and alignment. Working closely with partner labs, you will turn our datasets into clear, defensible evidence: this data → this improvement → under these conditions. This is experimental, high-leverage work.
Run controlled SFT and RL experiments to measure the impact of our datasets on model performance.
Help build public evals and new data types that push the frontier.
Publish external-facing research, blog posts, and technical reports.
Work with internal SPLs to iterate on data quality based on your results.
Strong familiarity with LLM training and evaluation methodologies.
Genuine obsession with how data structure, selection, and quality drive model behavior.
Ability to design lightweight experiments, move fast, and extract actionable insights from messy results.
Comfort working across domains (you'll touch finance, software engineering, policy, and more).
A bias toward building over theorizing.
Great candidates are undergrad research or master's research (but haven't done a phd).
Annual target cash compensation of $250-450K + meaningful equity
Comprehensive benefits (UberEats and ride share stipend, comped Equinox, 401K with match, health, dental, and vision insurance)
Applied research lab curating data solutions to accelerate foundation model development. Serving every frontier AI lab.
AfterQuery is an applied research lab curating data solutions to accelerate foundation model development.
Based on 1029 listings with disclosed salaries, most science & research jobs in San Francisco, CA pay between $90k–$295k per year. Individual offers vary with seniority, company size, and specialization.
There are currently 1,437 open science & research positions in San Francisco, CA listed on Clera. New openings are added daily as companies post roles.
Companies currently hiring include UCSF Department of Anesthesia and Perioperative Care, OpenAI, Anthropic, Sutter Health, Astranis Space Technologies, among others. Browse the listings above to see every active employer.
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