Browse all jobs
Research Engineer roles

Research Engineer Jobs at AI Startups

There are currently 158 open Research Engineer jobs across 76 AI startups. 42% of these roles are at early-stage (Pre-Seed through Series B) companies. Every listing links straight to the company's official application page.

158Open roles
76Companies hiring
Sep 11, 2026Last updated
01

Filter by funding stage

Series G+ 35 (22%)Series A 31 (20%)Series C 22 (14%)Series B 18 (11%)Seed 17 (11%)Series D 14 (9%)Series E 9 (6%)Growth 6 (4%)Unknown 5 (3%)Series F 1 (1%)
02

Open Research Engineer Roles

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, Cybersecurity RL (Reinforcement Learning)AnthropicSeries G+Zürich, CHSep 7, 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
Research EngineerTuringSeries EMultiple locationsSep 3, 2026
Research EngineerTuringSeries EMultiple locationsSep 3, 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
Staff Parser/Compiler Research Engineer.txtSeedUS RemoteSep 2, 2026
Senior Research EngineerAssemblyAISeries CMultiple locationsSep 1, 2026
Research Engineer, Agentic SystemsMirageGrowthUnion Square, New York CityAug 31, 2026
[Expression of Interest] Research Engineer / Scientist, Alignment - LondonAnthropicSeries G+London, UKAug 28, 2026
Research Engineer, Machine Learning (Reinforcement Learning)AnthropicSeries G+London, UKAug 28, 2026
Research Engineer, Machine Learning (RL Velocity)AnthropicSeries G+London, UKAug 28, 2026
Research Engineer, PretrainingAnthropicSeries G+London, UKAug 28, 2026
Research Engineer, Pretraining Scaling - LondonAnthropicSeries G+London, UKAug 28, 2026
Research Engineer, Production Model Post-TrainingAnthropicSeries G+Zürich, CHAug 28, 2026
Research Engineer, RL Scaling ScienceAnthropicSeries G+London, UKAug 28, 2026
Research Engineer - InferenceElevenLabsSeries DMultiple locationsAug 28, 2026
Research Engineer - Web CrawlersElevenLabsSeries DMultiple locationsAug 28, 2026
Research Engineer - Data InfrastructureElevenLabsSeries DMultiple locationsAug 28, 2026
Research Engineer, AI ModelsEncharge AISeries BIndiaAug 28, 2026
Research EngineerAfterQuerySeries ASan FranciscoAug 27, 2026
Staff+ Research Engineer, RL Data PlatformAnthropicSeries G+Multiple locationsAug 27, 2026
Senior Staff Research EngineerNetradyneSeries DMultiple locationsAug 26, 2026
Research Engineer, Formal MethodsHarmonic AISeries CMultiple locationsAug 24, 2026
Senior Applied Research Engineer - VideoSynthesiaSeries EEuropeAug 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
View all 158 Research Engineer jobs
03

FAQ

How many Research Engineer jobs are open at AI startups?

There are currently 158 open Research Engineer jobs across 76 AI startups on Fast AI Jobs.

What funding stages are hiring Research Engineers?

42% of open Research Engineer roles are at early-stage (Pre-Seed through Series B) startups, with the remainder at later-stage and growth companies.

How often is this Research Engineer list updated?

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