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Series A AI Startup Research Scientist Jobs

There are currently 74 open Research Scientist jobs across 45 Series A AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

74Open roles
45Companies hiring
Sep 15, 2026Last updated
01

Open Research Scientist Roles at Series A AI Startups

RoleCompanyStageLocationPosted
Machine Learning Scientist I / II, Protein DesignLila SciencesSeries AMultiple locationsSep 15, 2026
ML Scientist I/II, AI for Protein EngineeringLila SciencesSeries AMultiple locationsSep 15, 2026
Senior ML Scientist, AI for Protein EngineeringLila SciencesSeries AMultiple locationsSep 15, 2026
Senior ML Scientist, Biological SystemsLila SciencesSeries AMultiple locationsSep 15, 2026
Senior/Principal ML Scientist, Translational BiologyLila SciencesSeries AMultiple locationsSep 15, 2026
AI/ML Research InternAfterQuerySeries ASan FranciscoSep 12, 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
Quantitative ResearcherHyperbolicSeries ASan Francisco, CASep 9, 2026
Research ScientistThe Nuclear CompanySeries AMultiple locationsSep 8, 2026
Principal Scientist / Associate Director, Agentic AI Research for Materials ScienceLila SciencesSeries AMultiple locationsSep 2, 2026
Research Scientist, Computational Condensed Matter PhysicsLila SciencesSeries AMultiple locationsSep 2, 2026
Research Scientist, Frontier CapabilitiesLila SciencesSeries AMultiple locationsSep 2, 2026
Research Scientist I/II, Computational Organic ElectronicsLila SciencesSeries AMultiple locationsSep 2, 2026
Research Scientist, Photonic Materials DiscoveryLila SciencesSeries AMultiple locationsSep 2, 2026
Scientist II / Senior ML Scientist, Cofolding and Structure-Aware MLLila SciencesSeries AMultiple locationsSep 2, 2026
Scientist II / Senior ML Scientist, Data-Efficient Learning for Drug DiscoveryLila SciencesSeries AMultiple locationsSep 2, 2026
Senior / Principal ML Scientist, Foundation Models for Life SciencesLila SciencesSeries AMultiple locationsSep 2, 2026
Senior Software Engineer, ML ResearchLila SciencesSeries AMultiple locationsSep 2, 2026
AI Research EngineerProlificSeries AMultiple locationsSep 2, 2026
Mass Spectrometry ChemistGeneral MatterSeries ALos Angeles, CASep 1, 2026
Electrical Engineer / Applied PhysicistUntilSeries ABay AreaSep 1, 2026
Data Scientist - ML ResearchLMArenaSeries ABay AreaAug 31, 2026
Research ScientistCounsel HealthSeries AMultiple locationsAug 28, 2026
Machine Learning ScientistEli HealthSeries AMontreal (in-person)Aug 26, 2026
AI Research Assistant — Machine Learning & AIStudyFetchSeries ABeverly Hills, CAAug 19, 2026
AI Research EngineerTraversalSeries ANew YorkAug 17, 2026
Research ScientistArcade AISeries APresidio, CAAug 14, 2026
Lead AI Research Engineer, Embodied SystemsRoboForceSeries AMilpitas, CAAug 7, 2026
Senior / Staff AI Research Engineer, Data InfrastructureRoboForceSeries AMilpitas, CAAug 7, 2026
Senior / Staff AI Research Scientist, Foundation ModelsRoboForceSeries AMilpitas, CAAug 7, 2026
Applied Healthcare ResearcherProtegeSeries ARemoteAug 6, 2026
Postdoctoral Clinical Research ScientistSlingshot AISeries ANew YorkAug 5, 2026
Research Scientist, SimulationDyna RoboticsSeries ARedwood City, CAAug 4, 2026
AI Research EngineerCogent SecuritySeries AMultiple locationsAug 3, 2026
AI Research ScientistCogent SecuritySeries AMultiple locationsAug 3, 2026
AI Research Scientist, Learning & EvaluationStudyFetchSeries ABeverly Hills, CAJul 29, 2026
Member of Technical Staff - ML Scientist, Japanese MultimodalLiquid AISeries ATokyoJul 29, 2026
AI Research ScientistP-1 AISeries ASan Francisco Bay AreaJul 29, 2026
AI Research Scientist - Spatial ReasoningP-1 AISeries ASan Francisco Bay AreaJul 29, 2026
Applied Researcher - Deployment Intelligence & Continuous LearningDyna RoboticsSeries ARedwood City, CAJul 21, 2026
Researcher, Compute ScalingFluidStackSeries AMultiple locationsJul 17, 2026
Member of Technical Staff, Research EngineerAtaraxis AISeries ANew York HQJul 3, 2026
Machine Learning ScientistLatent LabsSeries ALondonJun 29, 2026
Research Scientist – Computer Vision (Hand Tracking & Manipulation)MeckaSeries ANew YorkJun 15, 2026
Research Scientist (Spatial AI & Neural Reconstruction)MeckaSeries ANew YorkJun 1, 2026
Machine Learning Researcher, RL & Agentic SystemsProtegeSeries ARemoteMay 28, 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 74 open Research Scientist jobs across 45 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.