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Research Engineer · San Francisco

Research Engineer Jobs in San Francisco

There are currently 101 open Research Engineer jobs in San Francisco & Bay Area across 50 AI startups. 33% of these roles are at Series A–B startups. Every listing links straight to the company's official application page.

101Open roles
50Companies hiring
Sep 11, 2026Last updated
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Funding-stage mix

Series G+ 27 (27%)Series A 22 (22%)Series B 11 (11%)Series C 11 (11%)Seed 10 (10%)Series D 9 (9%)Growth 4 (4%)Unknown 4 (4%)Series E 2 (2%)Series F 1 (1%)
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Open Research Engineer Roles in San Francisco

RoleCompanyStageLocationPosted
Research Engineer, AI for Chip DesignOpenAIGrowthSan FranciscoSep 11, 2026
Research Engineer, Agentic EDANormalSeries BMultiple locationsSep 9, 2026
Research Engineer, Takeoff IntelAnthropicSeries G+Multiple locationsSep 8, 2026
Research Engineer, Large-Scale TrainingTogether AISeries CSan FranciscoSep 8, 2026
Research Engineer, Post-Training InferenceTogether AISeries CSan FranciscoSep 8, 2026
Systems Research Engineer, GPU ProgrammingTogether AISeries CSan FranciscoSep 8, 2026
Research Engineer, SafetyDecagonSeries DMultiple locationsSep 4, 2026
Research Engineer, Audio and SpeechDecagonSeries DMultiple locationsSep 4, 2026
Senior Research Engineer, SafetyDecagonSeries DMultiple locationsSep 4, 2026
Applied AI, Research EngineerAnthropicSeries G+Multiple locationsSep 4, 2026
Machine Learning Systems Research Engineer/Scientist, Agent Post-training - Enterprise GenAIScale AISeries G+Multiple locationsSep 4, 2026
Senior Research EngineerTuringSeries EMultiple locationsSep 3, 2026
Staff Research EngineerTuringSeries EMultiple locationsSep 3, 2026
Research Engineer, Frontier CapabilitiesLila SciencesSeries AMultiple locationsSep 2, 2026
Senior / Engineer II, AI Lab Research EngineerLila SciencesSeries AMultiple locationsSep 2, 2026
Staff / Principal Research Engineer, AI Safety, Technical MitigationsLila SciencesSeries AMultiple locationsSep 2, 2026
Staff Research Engineer, Scientific Computing and ML/Physics InfrastructureLila SciencesSeries AMultiple locationsSep 2, 2026
Research EngineerAfterQuerySeries ASan FranciscoAug 27, 2026
Staff+ Research Engineer, RL Data PlatformAnthropicSeries G+Multiple locationsAug 27, 2026
Research Engineer, Formal MethodsHarmonic AISeries CMultiple locationsAug 24, 2026
Research Engineer, Machine Learning SystemsDeepgramSeries CMultiple locationsAug 23, 2026
Research EngineerGreptileSeries ASan FranciscoAug 22, 2026
ML/Research Engineer, SafeguardsAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Chip Design RL (Reinforcement Learning)AnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Code RL (Reinforcement Learning)AnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Computer UseAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Cybersecurity RL (Reinforcement Learning)AnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, DiscoveryAnthropicSeries G+San Francisco, CAAug 21, 2026
Research Engineer, Domain ScalingAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, InterpretabilityAnthropicSeries G+San Francisco, CAAug 21, 2026
Research Engineer, Knowledge TeamAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Life SciencesAnthropicSeries G+San Francisco, CAAug 21, 2026
Research Engineer, Machine Learning (Reinforcement Learning)AnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Machine Learning (RL Velocity)AnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Model EvaluationsAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Performance RL (Reinforcement Learning)AnthropicSeries G+San Francisco, CAAug 21, 2026
Research Engineer, Pretraining ScalingAnthropicSeries G+San Francisco, CAAug 21, 2026
Research Engineer, Production Model Post-TrainingAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, RL EngineeringAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer / Scientist, AlignmentAnthropicSeries G+San Francisco, CAAug 21, 2026
Research Engineer, UniversesAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer, Visual Knowledge WorkAnthropicSeries G+Multiple locationsAug 21, 2026
Staff Research Engineer, Discovery TeamAnthropicSeries G+Multiple locationsAug 21, 2026
Research Engineer - Agent MemoryMem0Series ASan Francisco Bay AreaAug 20, 2026
Staff Research Engineer, Data AgentsDatabricksSeries G+San Francisco, CaliforniaAug 18, 2026
Research Engineer – BenchmarkingMercorSeries CSan FranciscoAug 18, 2026
Research Engineer, Post-TrainingVizcomSeries BSan FranciscoAug 18, 2026
Research Engineer, Lab AutomationPeriodic LabsSeedMenlo Park, CAAug 15, 2026
Research Engineer, LangSmith EngineLangChainSeries BMultiple locationsAug 14, 2026
Research EngineerPantograph PBC-San FranciscoAug 11, 2026
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FAQ

How many Research Engineer jobs are open in San Francisco?

There are currently 101 open Research Engineer jobs in San Francisco across 50 AI startups on Fast AI Jobs.

What funding stages are hiring Research Engineers in San Francisco?

33% 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.