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Research Scientist Jobs at AI Startups

There are currently 343 open Research Scientist jobs across 170 AI startups. 54% of these roles are at early-stage (Pre-Seed through Series B) companies. Every listing links straight to the company's official application page.

343Open roles
170Companies hiring
Sep 14, 2026Last updated
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Series B 72 (21%)Series A 70 (20%)Series G+ 41 (12%)Seed 41 (12%)Series E 32 (9%)Series C 30 (9%)Growth 27 (8%)Unknown 13 (4%)Series D 12 (3%)Pre-Seed 3 (1%)Private Equity 1 (0%)Series F 1 (0%)
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Open Research Scientist Roles

RoleCompanyStageLocationPosted
UX ResearcherClairSeries BMultiple locationsSep 14, 2026
Senior Advanced Research ScientistAndurilSeries G+Multiple locationsSep 14, 2026
Staff Gen AI Research ScientistAndurilSeries G+Multiple locationsSep 14, 2026
Applied AI Scientist, Autonomous DefenseHorizon3AISeries EUS RemoteSep 14, 2026
AI Researcher - Perception1X TechnologiesSeries BSan Carlos, CASep 14, 2026
Member of Platform Science (Research Scientist)AnthrogenSeedSan FranciscoSep 13, 2026
Member of Platform Science (Research Scientist, In-vivo)AnthrogenSeedSan FranciscoSep 13, 2026
AI/ML Research InternAfterQuerySeries ASan FranciscoSep 12, 2026
Research Scientist, Battlespace AwarenessAndurilSeries G+Multiple locationsSep 12, 2026
Research Scientist, Battlespace AwarenessAndurilSeries G+Multiple locationsSep 12, 2026
Senior Research Scientist, Battlespace AwarenessAndurilSeries G+Multiple locationsSep 12, 2026
Senior Research Scientist, Battlespace AwarenessAndurilSeries G+Multiple locationsSep 12, 2026
Researcher, Safety Training, National SecurityOpenAIGrowthMultiple locationsSep 12, 2026
Computational ChemistEdison ScientificSeedRemote available (U.S. Only)Sep 11, 2026
Senior AI Research EngineerEmergentSeries CBangaloreSep 11, 2026
Research Scientist - Material ModellingPhysicsXSeries CMultiple locationsSep 11, 2026
Research Engineer / Research ScientistRiver AISeedMultiple locationsSep 11, 2026
AI Research Team LeadCyeraSeries G+Tel AvivSep 10, 2026
AI ResearcherCyeraSeries G+Tel AvivSep 10, 2026
Research Scientist – Frontier EvaluationsAfterQuerySeries ASan FranciscoSep 10, 2026
ML Scientist, Foundation Models for Life SciencesLila SciencesSeries AMultiple locationsSep 10, 2026
ML Scientist, Nucleic Acid DesignLila SciencesSeries AMultiple locationsSep 10, 2026
AI Research Scientist (NLP)PangramSeries ABrooklynSep 10, 2026
OBA Research Scientist/Engineer – Fusion Energy SystemsPacific FusionSeries AMultiple locationsSep 10, 2026
Principal Research Scientist [Risk]Plata CardSeries CWorldwideSep 10, 2026
Research Scientist Junior/Junior+Plata CardSeries CWorldwideSep 10, 2026
Machine Learning Research EngineerProfluentSeries BMultiple locationsSep 10, 2026
Machine Learning Scientist, BioMLProfluentSeries BMultiple locationsSep 10, 2026
Machine Learning Scientist, PretrainingProfluentSeries BMultiple locationsSep 10, 2026
Machine Learning Scientist, Reinforcement LearningProfluentSeries BMultiple locationsSep 10, 2026
Sr. AMO PhysicistQuEra ComputingSeries BMultiple locationsSep 10, 2026
User Experience Researcher, PlatformAnthropicSeries G+Multiple locationsSep 9, 2026
Expert Quantum PhysicistAlice & BobSeries BParisSep 9, 2026
Quantitative ResearcherHyperbolicSeries ASan Francisco, CASep 9, 2026
Applied AI Scientist, Small Language Model and AI TrainingPostmanSeries DMultiple locationsSep 9, 2026
Staff/Senior Machine Learning Research Engineer, Intelligent SystemsScale AISeries G+Multiple locationsSep 9, 2026
Director, Forward Deployed Researcher - Data as a ServiceSnorkel AISeries DMultiple locationsSep 9, 2026
Research ScientistSnorkel AISeries DMultiple locationsSep 9, 2026
Research Scientist - Frontier BenchmarksSnorkel AISeries DMultiple locationsSep 9, 2026
Health PhysicistValar AtomicsSeries BMultiple locationsSep 9, 2026
Forward Deployed Research ScientistGoodfireSeries BMultiple locationsSep 8, 2026
Forward Deployed Research Scientist, Life SciencesGoodfireSeries BMultiple locationsSep 8, 2026
Research ScientistThe Nuclear CompanySeries AMultiple locationsSep 8, 2026
Senior Technical Recruiter, AI/ML ResearchTogether AISeries CSan FranciscoSep 8, 2026
Researcher, LocomotionMenlo Research-Multiple locationsSep 4, 2026
Researcher, ManipulationMenlo Research-Multiple locationsSep 4, 2026
Machine Learning Research Scientist, Agent Data Foundation - Enterprise GenAIScale AISeries G+Multiple locationsSep 4, 2026
Machine Learning Research Scientist Agents - Enterprise GenAIScale AISeries G+Multiple locationsSep 4, 2026
Staff Machine Learning Research Scientist Agent Post-training - Enterprise GenAIScale AISeries G+Multiple locationsSep 4, 2026
Senior / Principal Computational BiologistFlagship PioneeringMultiple locationsSep 3, 2026
View all 343 Research Scientist jobs
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FAQ

How many Research Scientist jobs are open at AI startups?

There are currently 343 open Research Scientist jobs across 170 AI startups on Fast AI Jobs.

What funding stages are hiring Research Scientists?

54% of open Research Scientist 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 Scientist list updated?

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