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Series A AI Startup Research Scientist Jobs

There are currently 63 open Research Scientist jobs across 32 Series A AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

63Open roles
32Companies hiring
Jun 15, 2026Last updated
01

Open Research Scientist Roles at Series A AI Startups

RoleCompanyStageLocationPosted
Research Scientist – Computer Vision (Hand Tracking & Manipulation)MeckaSeries ANew YorkJun 15, 2026
ML Research InternSamaya AISeries AMountain View, California, United StatesJun 4, 2026
Research Scientist, Video Understanding & World ModelsMeckaSeries ANew YorkJun 1, 2026
Research Scientist, RL & SimulationMeckaSeries ANew YorkJun 1, 2026
Research Scientist (Spatial AI & Neural Reconstruction)MeckaSeries ANew YorkJun 1, 2026
Machine Learning Researcher, AudioProtegeSeries ARemoteJun 1, 2026
Applied Research ScientistPeec AISeries ABerlinMay 28, 2026
Machine Learning Researcher, RL & Agentic SystemsProtegeSeries ARemoteMay 28, 2026
Research Scientist, Benchmarks & EvaluationsProtegeSeries ARemoteMay 21, 2026
Machine Learning Scientist I/II, Multi-Modal Scientific ReasoningsLila SciencesSeries ACambridge, MA USAMay 15, 2026
Principal ML Research EngineerLila SciencesSeries ASan Francisco, CA USAMay 15, 2026
Research Scientist I/II, Multiscale & Multiphysics SimulationsLila SciencesSeries ACambridge, MA USAMay 15, 2026
Machine Learning Scientist I/II, Scientific ReasoningLila SciencesSeries ACambridge, MA USAMay 14, 2026
ML Research Scientist I/II, Multimodal Data ExtractionLila SciencesSeries ACambridge, MA USAMay 14, 2026
ML Scientist I / II, Foundation Models for Life SciencesLila SciencesSeries ASan Francisco, CA USAMay 14, 2026
Research Scientist, Dexterous Manipulation & Robot LearningLila SciencesSeries ACambridge, MA USAMay 14, 2026
Research Scientist, Frontier CapabilitiesLila SciencesSeries ACambridge, MA USAMay 14, 2026
Research Scientist I/II, AI for Process EngineeringLila SciencesSeries ACambridge, MA USAMay 14, 2026
Research Scientist I/II, Statistical Mechanics and DynamicsLila SciencesSeries ACambridge, MA USAMay 14, 2026
Senior / Principal ML Scientist, Foundation Models for Life SciencesLila SciencesSeries ASan Francisco, CA USAMay 14, 2026
Senior Software Engineer, ML ResearchLila SciencesSeries ACambridge, MA USAMay 14, 2026
Experimental PhysicistPacific FusionSeries ASan Leandro, CaliforniaMay 14, 2026
Experimental PhysicistPacific FusionSeries ALos Lunas, New MexicoMay 13, 2026
Research ScientistCogent SecuritySeries ASan Francisco, CAMay 12, 2026
ML Researcher - EvaluationsFundamentalSeries ABarcelonaMay 11, 2026
Biostatistics ResearcherPhaseVSeries AOne Broadway, 11th floor, Cambridge, MA 02142, USAMay 11, 2026
AI Research EngineerCogent SecuritySeries ASan Francisco, CAMay 9, 2026
Applied ML Researcher (Force Fields and Simulation)CuspAISeries AAmsterdam, NLMay 6, 2026
Senior Researcher, Diffusion & VisionProtegeSeries ARemoteMay 6, 2026
Applied Security Researcher (Product Engineering)CroglSeries AUnited StatesMay 1, 2026
Research ScientistDatology AISeries ARedwood CityApr 20, 2026
Research ScientistHedraSeries ASan FranciscoApr 15, 2026
AI Research DirectorWebAISeries AAustin, TXApr 15, 2026
Research ScientistLatent HealthSeries ASan FranciscoApr 13, 2026
Product ResearcherFirecrawlSeries ASan Francisco, CA (Hybrid) OR Remote (Americas, UTC-3 to UTC-10)Apr 6, 2026
Probabilistic Programming ResearcherAstromechSeries AMar 23, 2026
Senior Research Scientist, Evolutionary BiologyAstromechSeries AMar 23, 2026
Computational BiologistAstromechSeries AMar 23, 2026
MR PhysicistNudgeSeries ASan FranciscoMar 12, 2026
Member of Technical Staff, Research EngineerOdysseySeries APalo AltoMar 11, 2026
Member of Technical Staff - Research ScientistPatronus AISeries AMar 2, 2026
OBA Research Scientist/Engineer – Fusion Energy SystemsPacific FusionSeries ASan Leandro, CAFeb 18, 2026
Generative AI Researcher InternMeshySeries AShanghaiJan 22, 2026
LLM Modeling and Scaling ResearcherRicursive IntelligenceSeries APalo AltoJan 19, 2026
Applied AI Research EngineerEnterpretSeries ABengaluruJan 7, 2026
AI Research ScientistWebAISeries AAustin, TXDec 30, 2025
Machine Learning Scientist - Open Source LeadLMArenaSeries ABay AreaDec 18, 2025
Machine Learning ScientistLMArenaSeries ABay AreaDec 18, 2025
Member of Technical Staff, Research ScientistOdysseySeries APalo AltoNov 11, 2025
ML ResearcherFundamentalSeries ABarcelonaOct 30, 2025
View all Research Scientist jobs
02

FAQ

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

There are currently 63 open Research Scientist jobs across 32 Series A 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 A 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.