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Research Engineer · San Francisco

Research Engineer Jobs in San Francisco

There are currently 81 open Research Engineer jobs in San Francisco & Bay Area across 37 AI startups. 22% of these roles are at Series A–B startups. Every listing links straight to the company's official application page.

81Open roles
37Companies hiring
Jun 15, 2026Last updated
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Funding-stage mix

Series G+ 19 (23%)Seed 14 (17%)Series A 12 (15%)Series C 9 (11%)Series E 7 (9%)Series D 7 (9%)Series B 6 (7%)Growth 5 (6%)Debt 2 (2%)
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Open Research Engineer Roles in San Francisco

RoleCompanyStageLocationPosted
Research Engineer, RL EngineeringAnthropicSeries G+San Francisco, CAJun 15, 2026
Senior GenAI Research Engineer - Optimization and KernelsDatabricksSeries G+Mountain View, CaliforniaJun 15, 2026
Research Engineer, Core MLTogether AISeries CSan FranciscoJun 15, 2026
Research Engineer, Frontier Speculative DecodingTogether AISeries CSan Francisco, New York CityJun 15, 2026
Systems Research Engineer, GPU ProgrammingTogether AISeries CSan FranciscoJun 15, 2026
Systems Research Engineer Intern - GPU Programming (Fall 2026)Together AISeries CSan FranciscoJun 15, 2026
Research Engineer, Code RL (Reinforcement Learning)AnthropicSeries G+San Francisco, CAJun 11, 2026
Staff Research Engineer - CodeTuringSeries ESan Francisco, California, United StatesJun 11, 2026
Staff Research Engineer - RL GymsTuringSeries ESan Francisco, California, United StatesJun 11, 2026
Research Engineer (Scaling Multimodal Data)World LabsSeries ESan FranciscoJun 11, 2026
Research Engineer / Scientist (3D Reconstruction)World LabsSeries ESan FranciscoJun 11, 2026
Research Engineer / Scientist (3D Tech Lead)World LabsSeries ESan FranciscoJun 11, 2026
Research Engineer / Scientist (SLAM)World LabsSeries ESan FranciscoJun 11, 2026
Research Engineer, Cybersecurity RL (Reinforcement Learning)AnthropicSeries G+San Francisco, CAJun 10, 2026
Research Engineer, Performance RL (Reinforcement Learning)AnthropicSeries G+San Francisco, CAJun 10, 2026
Research EngineerDatology AISeries ARedwood CityJun 4, 2026
Research Engineer, Safeguards LabsAnthropicSeries G+San Francisco, CAJun 3, 2026
Founding Applied Research EngineerRoxSeries BSan FranciscoMay 28, 2026
Research Engineer, Knowledge FoundationsAnthropicSeries G+San Francisco, CAMay 26, 2026
Machine Learning Systems Research Engineer, Agent Post-training - Enterprise GenAIScale AISeries G+San Francisco, CAMay 26, 2026
Research Engineer, Economic Research Data PlatformAnthropicSeries G+San Francisco, CAMay 20, 2026
Senior Research EngineerMem0Series ASan Francisco Bay AreaMay 20, 2026
Senior Research Engineer, Voice + SpeechDecagonSeries DSan FranciscoMay 18, 2026
Research EngineerGraphon AISeedSan FranciscoMay 14, 2026
Research Engineer – EvalsFirecrawlSeries ASan Francisco, CA (Hybrid) OR Remote (Americas, UTC-3 to UTC-10)May 13, 2026
Research Engineer, Tinker, Developer ExperienceThinking Machines LabSeedSan FranciscoMay 13, 2026
Research Engineer, VoiceInflection AIGrowthPalo Alto, California, United StatesMay 12, 2026
Research Engineer, AgentsDecagonSeries DSan FranciscoMay 5, 2026
Research Engineer - DataPeriodic LabsSeedMenlo ParkMay 5, 2026
Research Engineer, Infrastructure, InferenceThinking Machines LabSeedSan FranciscoMay 4, 2026
Research Engineer, Infrastructure, KernelsThinking Machines LabSeedSan FranciscoMay 4, 2026
Research Engineer, Infrastructure, NumericsThinking Machines LabSeedSan FranciscoMay 4, 2026
Research Engineer, Infrastructure, RL SystemsThinking Machines LabSeedSan FranciscoMay 4, 2026
Research Engineer, Infrastructure, Training SystemsThinking Machines LabSeedSan FranciscoMay 4, 2026
Research EngineerSesame AISeries BSan FranciscoMay 1, 2026
Research Engineer, Multimodal DataEventual ComputingSeries ASan FranciscoApr 29, 2026
Research Engineer, CalibrationWaabiSeries CSan Francisco, CAApr 22, 2026
Research Engineer, Data InfrastructureMistral AIDebtPalo AltoApr 21, 2026
Research Engineer, AI ObservabilityAnthropicSeries G+San Francisco, CAApr 15, 2026
Research EngineerHedraSeries ASan FranciscoApr 15, 2026
Robotics Research EngineerPhysical IntelligenceSeries BSan FranciscoApr 13, 2026
Research Engineer, InfrastructureCognition AISeries DSan FranciscoApr 8, 2026
Research Engineer – Benchmarking, Evals & Failure AnalysisMercorSeries CSan FranciscoApr 8, 2026
Research Engineer / Scientist, Frontier Red Team (Cyber)AnthropicSeries G+San Francisco, CAApr 7, 2026
ML/Research Engineer, SafeguardsAnthropicSeries G+San Francisco, CAApr 3, 2026
Research Engineer, DiscoveryAnthropicSeries G+San Francisco, CAApr 3, 2026
Research Engineer, InterpretabilityAnthropicSeries G+San Francisco, CAApr 3, 2026
Research Engineer, Machine Learning (Reinforcement Learning)AnthropicSeries G+San Francisco, CAApr 3, 2026
Research Engineer, Production Model Post-TrainingAnthropicSeries G+San Francisco, CAApr 3, 2026
Research Engineer / Scientist, Alignment ScienceAnthropicSeries G+San Francisco, CAApr 3, 2026
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FAQ

How many Research Engineer jobs are open in San Francisco?

There are currently 81 open Research Engineer jobs in San Francisco across 37 AI startups on Fast AI Jobs.

What funding stages are hiring Research Engineers in San Francisco?

22% of open Research Engineer roles in San Francisco are at Series A–B startups, with the rest spread across seed and later-stage companies.

How often is this list updated?

Listings are refreshed daily from official company career pages and deduplicated by posting. Every link points to the original application page.