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Series D+ · Research Scientist

Series D+ AI Startup Research Scientist Jobs

There are currently 122 open Research Scientist jobs across 37 Series D+ AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

122Open roles
37Companies hiring
Oct 30, 2026Last updated
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Open Research Scientist Roles at Series D+ AI Startups

RoleCompanyStageLocationPosted
Member of Technical Staff, Research (2026 PhD New Grad) - SeattleFireworksSeries DGreater Seattle AreaOct 30, 2026
Senior UX ResearcherFivetranSeries DMultiple locationsOct 30, 2026
Senior/Staff Applied AI Researcher, GrowthQuinceSeries EMultiple locationsOct 30, 2026
Threat ResearcherAbnormal SecuritySeries EUS RemoteOct 29, 2026
Research Scientist, Life Sciences (Chemistry)AnthropicSeries G+San Francisco, CAOct 29, 2026
Research Scientist, Life Sciences (Large Molecules, Antibody Design)AnthropicSeries G+San Francisco, CAOct 29, 2026
Research Scientist, Life Sciences (Large Molecules, Process Development)AnthropicSeries G+San Francisco, CAOct 29, 2026
Sr. AI Researcher, Agentic SystemsOpenSpaceSeries DMultiple locationsOct 29, 2026
Director, Forward Deployed Researcher - Data as a ServiceSnorkel AISeries EMultiple locationsOct 29, 2026
Forward Deployed Researcher - Data as a ServiceSnorkel AISeries EMultiple locationsOct 29, 2026
Research ScientistSnorkel AISeries EMultiple locationsOct 29, 2026
Research Scientist - Human-AI SystemsSnorkel AISeries EMultiple locationsOct 29, 2026
Senior Product Security ResearcherIslandSeries FTel AvivOct 28, 2026
PhD GenAI Research Scientist InternDatabricksSeries G+Multiple locationsOct 27, 2026
Researcher II, Weekend TeamWhoopSeries G+Boston, MAOct 27, 2026
AI ResearcherCyeraSeries G+Tel AvivOct 26, 2026
AI Research Team LeadCyeraSeries G+Tel AvivOct 26, 2026
Machine Learning Scientist – Generative Molecular DesignSandboxAQSeries EUnited StatesOct 26, 2026
Machine Learning Scientist, Generative Molecular Design (Material Discovery)SandboxAQSeries EUnited StatesOct 26, 2026
Computational Chemist - Machine Learned Force Fields, Material DiscoverySandboxAQSeries EUnited StatesOct 26, 2026
Machine Learning Scientist - Molecular Force FieldsSandboxAQSeries EUnited StatesOct 26, 2026
Research Scientist, Life Sciences (Computational Chemistry)AnthropicSeries G+San Francisco, CAOct 25, 2026
Security ResearcherCato NetworksSeries GMultiple locationsOct 25, 2026
Research Scientist, STEMTuringSeries EMultiple locationsOct 25, 2026
Senior Research Scientist, STEMTuringSeries EMultiple locationsOct 25, 2026
Staff Research ScientistTuringSeries EMultiple locationsOct 25, 2026
Machine Learning Research Intern (Summer 2027)Scale AISeries G+Multiple locationsOct 22, 2026
Machine Learning Research Scientist, EvaluationsScale AISeries G+Multiple locationsOct 22, 2026
Machine Learning Research Scientist, Post-TrainingScale AISeries G+Multiple locationsOct 22, 2026
ML Research Engineer, ML SystemsScale AISeries G+Multiple locationsOct 22, 2026
Research Scientist, Agent RobustnessScale AISeries G+Multiple locationsOct 22, 2026
Research Scientist, AI Controls and MonitoringScale AISeries G+Multiple locationsOct 22, 2026
Research Scientist, Frontier Risk EvaluationsScale AISeries G+Multiple locationsOct 22, 2026
Research Scientist, Safety Post TrainingScale AISeries G+Multiple locationsOct 22, 2026
Senior Manager, Research ScientistScale AISeries G+Multiple locationsOct 22, 2026
Senior/Staff Machine Learning Research Engineer, General Agents, Enterprise GenAIScale AISeries G+Multiple locationsOct 22, 2026
Senior / Staff Machine Learning Research Scientist, AgentsScale AISeries G+Multiple locationsOct 22, 2026
Staff/Senior Machine Learning Research Engineer, Intelligent SystemsScale AISeries G+Multiple locationsOct 22, 2026
Research Scientist, InterpretabilityAnthropicSeries G+San Francisco, CAOct 20, 2026
AI Scientist, PlatformAvathonSeries DMultiple locationsOct 19, 2026
AI Scientist, Product Lifecycle Management (PLM)AvathonSeries DMultiple locationsOct 19, 2026
Senior AI Scientist, PlanningAvathonSeries DMultiple locationsOct 19, 2026
Senior AI Scientist, Transportation & LogisticsAvathonSeries DMultiple locationsOct 19, 2026
Senior Research Scientist, AI & Data SystemsEonSeries DMultiple locationsOct 19, 2026
Staff AI Research Engineer - Computer VisionHelsingSeries EMultiple locationsOct 19, 2026
AI Security - Applied AI ResearcherCato NetworksSeries GMultiple locationsOct 15, 2026
Application Security ResearcherCato NetworksSeries GMultiple locationsOct 15, 2026
Lead Security Researcher - AI Threat IntelligenceCato NetworksSeries GMultiple locationsOct 15, 2026
Research ScientistPersonaSeries DSan FranciscoOct 14, 2026
Senior Research ScientistPersonaSeries DSan FranciscoOct 14, 2026
View all Research Scientist jobs
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FAQ

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

There are currently 122 open Research Scientist jobs across 37 Series D+ 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 D+ 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.