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Series A AI Startup Research Scientist Jobs

There are currently 67 open Research Scientist jobs across 39 Series A AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

67Open roles
39Companies hiring
Aug 3, 2026Last updated
01

Open Research Scientist Roles at Series A AI Startups

RoleCompanyStageLocationPosted
AI Research EngineerCogent SecuritySeries ASan Francisco, CAAug 3, 2026
AI Research ScientistCogent SecuritySeries ASan Francisco, CAAug 3, 2026
Scientist II / Senior ML Scientist, Cofolding and Structure-Aware MLLila SciencesSeries ACambridge, MA USAAug 3, 2026
Scientist II / Senior ML Scientist, Data-Efficient Learning for Drug DiscoveryLila SciencesSeries ACambridge, MA USAAug 3, 2026
Research ScientistThe Nuclear CompanySeries AWashington, DCAug 3, 2026
AI Research Scientist, Learning & EvaluationStudyFetchSeries ABeverly Hills, CAJul 29, 2026
Member of Technical Staff - ML Scientist, Japanese MultimodalLiquid AISeries ATokyoJul 29, 2026
Security ResearcherEchoSeries ATel AvivJul 28, 2026
Research Scientist, Computational Condensed Matter PhysicsLila SciencesSeries ACambridge, MA USAJul 28, 2026
ML Scientist I/II, Nucleic Acid DesignLila SciencesSeries ASan Francisco, CA USAJul 27, 2026
Co-Op, ML Scientist for Protein EngineeringLila SciencesSeries ASan Francisco, CA USAJul 24, 2026
Applied Researcher - Deployment Intelligence & Continuous LearningDyna RoboticsSeries ARedwood City, CAJul 21, 2026
Senior ML Scientist, Biological SystemsLila SciencesSeries ASan Francisco, CA USAJul 17, 2026
Vulnerability ResearcherGlowSeries ATel AvivJul 15, 2026
Security ResearcherGlowSeries ATel AvivJul 15, 2026
Principal Scientist / Associate Director, Agentic AI Research for Materials ScienceLila SciencesSeries ACambridge, MA USAJul 10, 2026
AI Research Resident - Open Source AGIPrime IntellectSeries ARemoteJul 8, 2026
Research Scientist (ICML)AfterQuerySeries ASan FranciscoJul 7, 2026
Applied AI ScientistOmnifoldSeries ASan Francisco HQJul 7, 2026
Member of Technical Staff, Research EngineerAtaraxis AISeries ANew York HQJul 3, 2026
Applied Researcher InternMeshySeries AShanghaiJun 30, 2026
Machine Learning ScientistLatent LabsSeries ALondonJun 29, 2026
Co-Op, ML Scientist for BiologyLila SciencesSeries ASan Francisco, CA USAJun 25, 2026
OBA Research Scientist/Engineer – Fusion Energy SystemsPacific FusionSeries ASan Leandro, CAJun 16, 2026
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
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, Frontier CapabilitiesLila 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
Biostatistics ResearcherPhaseVSeries AOne Broadway, 11th floor, Cambridge, MA 02142, USAMay 11, 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 Scientist - Frontier DataAfterQuerySeries ASan FranciscoApr 14, 2026
Research Scientist - Post TrainingAfterQuerySeries ASan FranciscoApr 14, 2026
Research ScientistLatent HealthSeries ASan FranciscoApr 13, 2026
MTS - ML Research EngineerOmnifoldSeries ASan Francisco HQApr 1, 2026
MR PhysicistNudgeSeries ASan FranciscoMar 12, 2026
MTS - ML Research ScientistOmnifoldSeries ASan Francisco HQMar 10, 2026
View all Research Scientist jobs
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FAQ

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

There are currently 67 open Research Scientist jobs across 39 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.