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Series B AI Startup Research Scientist Jobs

There are currently 52 open Research Scientist jobs across 32 Series B AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

52Open roles
32Companies hiring
Jun 16, 2026Last updated
01

Open Research Scientist Roles at Series B AI Startups

RoleCompanyStageLocationPosted
Security Researcher - R&DVegaSeries BOn -Site, IsraelJun 16, 2026
Research ScientistCrosbySeries BNew York CityJun 16, 2026
AI ResearcherHume AISeries BRemote (NYC, San Jose)Jun 15, 2026
Senior/Staff AI Research EngineerHume AISeries BRemote (NYC, San Jose)Jun 15, 2026
Machine Learning Scientist, BioMLProfluentSeries BEmeryville, California, United StatesJun 11, 2026
Machine Learning Scientist, Reinforcement LearningProfluentSeries BEmeryville, California, United StatesJun 11, 2026
Sr Security ResearcherEndor LabsSeries BBengaluru, IndiaJun 10, 2026
Forward Deployed Research Scientist (Biology)GoodfireSeries BSan Francisco, CAJun 9, 2026
Research ScientistGoodfireSeries BSan Francisco, CAJun 9, 2026
Senior ML Research Engineer, NZPartlySeries BChristchurchJun 9, 2026
Health PhysicistValar AtomicsSeries BOrangeville, UtahJun 3, 2026
Threat Hunting ResearcherVegaSeries BOn -Site, IsraelMay 26, 2026
AI Research EngineerEmergentSeries BBangaloreMay 21, 2026
Principal Machine Learning ScientistGather AISeries BPittsburgh, PAMay 19, 2026
Applied AI Researcher, Multi-Agent SystemsDistyl AISeries BSan FranciscoMay 18, 2026
Multimodal LLM Researcher (MLLM)PikaSeries BPalo Alto HQMay 16, 2026
Senior Machine Learning Research EngineerDavid AISeries BSan FranciscoMay 15, 2026
AI Researcher (Multimodal Audio/Video Generation)TavusSeries BSan FranciscoMay 15, 2026
Founding Research Scientist, Human SimulationListen LabsSeries BSan Francisco, CAMay 6, 2026
Trials Manager - Clinical AI ResearchHeidi HealthSeries BLondonMay 4, 2026
AI/ML Scientist, Protein Foundation ModelsManifold BioSeries BBoston, MA or San Francisco, CAMay 4, 2026
AI/ML Research EngineerManifold BioSeries BBoston, MA or San Francisco, CAApr 30, 2026
AI/ML ScientistManifold BioSeries BBoston, MA or San Francisco, CAApr 30, 2026
Researcher, Post TrainingLovableSeries BStockholmApr 28, 2026
Research ScientistSesame AISeries BSan FranciscoApr 24, 2026
Machine Learning Research EngineerRoboflowSeries BRemoteApr 22, 2026
Machine Learning Researcher, Multimodal LLMsBlandSeries BSan FranciscoApr 21, 2026
Machine Learning Researcher, AudioBlandSeries BSan FranciscoApr 20, 2026
Machine Learning Research Engineer/ScientistSundaySeries BRedwood City, CAApr 13, 2026
Real-time Video ResearcherPikaSeries BPalo Alto HQApr 4, 2026
AI Research EngineerStorySeries BPalo Alto, CA, USAMar 31, 2026
Research ScientistChai DiscoverySeries BSan Francisco officeMar 6, 2026
Member of Technical Staff, Research EngineeringListen LabsSeries BSan Francisco, CAFeb 25, 2026
Senior Customer AI ResearcherBluefish AISeries BNew York, HybridFeb 23, 2026
Applied ResearcherPhysical IntelligenceSeries BSan FranciscoJan 23, 2026
Senior Quantum Error Correction ResearcherAlice & BobSeries BParisDec 19, 2025
UX ResearcherLovableSeries BStockholmNov 17, 2025
Senior Staff AI Research EngineerCampusSeries BCampus NYCNov 14, 2025
Researcher, EvalsCartesiaSeries B*HQ - San Francisco, CAOct 21, 2025
Researcher, Post TrainingCartesiaSeries B*HQ - San Francisco, CAOct 21, 2025
Applied AI Researcher, System DiscoveryDistyl AISeries BSan FranciscoOct 16, 2025
Applied AI Researcher, System Self-ImprovementDistyl AISeries BSan FranciscoOct 16, 2025
Applied AI Researcher, System Self-ConstructionDistyl AISeries BSan FranciscoOct 16, 2025
Applied AI Researcher, AI SystemsDistyl AISeries BSan FranciscoOct 16, 2025
Applied AI Researcher, Post-TrainingDistyl AISeries BSan FranciscoOct 16, 2025
Applied AI Researcher, BenchmarkingDistyl AISeries BSan FranciscoOct 16, 2025
Machine Learning Research ScientistSentraSeries BSan FranciscoOct 9, 2025
Researcher, Models (UK)CartesiaSeries BLondonOct 7, 2025
Applied Researcher, Audio UnderstandingCartesiaSeries B*HQ - San Francisco, CASep 16, 2025
AI Research ScientistCollateSeries BSan FranciscoSep 15, 2025
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FAQ

How many Research Scientist jobs are open at Series B AI startups?

There are currently 52 open Research Scientist jobs across 32 Series B AI startups on Fast AI Jobs.

Why filter Research Scientist jobs by funding stage?

Funding stage signals company size, runway, and equity upside. Filtering to Series B startups narrows the list to Research Scientist roles at companies at a comparable point in their growth.

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.