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Series C AI Startup Research Engineer Jobs

There are currently 30 open Research Engineer jobs across 13 Series C AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

30Open roles
13Companies hiring
Oct 29, 2026Last updated
01

Open Research Engineer Roles at Series C AI Startups

RoleCompanyStageLocationPosted
Research Engineer, Content UnderstandingExaSeries CZurichOct 29, 2026
Research Engineer, Index IntelligenceExaSeries CZurichOct 29, 2026
Vulnerability Research EngineerSocketSeries CRemoteOct 29, 2026
Research Engineer Intern - Environments, Data and Post-TrainingMercorSeries CSan FranciscoOct 27, 2026
Research Engineer, Intern – BenchmarkingMercorSeries CSan FranciscoOct 27, 2026
Research Engineer, Post-TrainingDeepgramSeries CMultiple locationsOct 19, 2026
Senior / Staff Research Engineer, Generative AI DeploymentWaabiSeries CToronto, ONOct 13, 2026
Research EngineerEncordSeries CLondonOct 12, 2026
Research Engineer, Content UnderstandingExaSeries CSan Francisco, CaliforniaOct 1, 2026
Research Engineer, Index IntelligenceExaSeries CSan Francisco, CaliforniaOct 1, 2026
Research EngineerAssort HealthSeries CSan FranciscoSep 24, 2026
Research Engineer, ML InfrastructureChai DiscoverySeries CSan Francisco officeSep 24, 2026
Research Engineer, Large-Scale TrainingTogether AISeries CSan FranciscoSep 23, 2026
Research Engineer, Post-Training InferenceTogether AISeries CSan FranciscoSep 23, 2026
Systems Research Engineer, GPU ProgrammingTogether AISeries CSan FranciscoSep 23, 2026
Systems Research Engineer Intern - GPU Programming (Summer 2027)Together AISeries CSan FranciscoSep 23, 2026
Systems Research Engineer Intern - GPU Programming (Winter 2027)Together AISeries CSan FranciscoSep 23, 2026
Research Engineer, Formal MethodsHarmonic AISeries CMultiple locationsAug 24, 2026
Research Engineer, Machine Learning SystemsDeepgramSeries CMultiple locationsAug 23, 2026
Research Engineer (Reinforcement Learning)LiveKitSeries CMultiple locationsAug 18, 2026
Research Engineer – BenchmarkingMercorSeries CSan FranciscoAug 18, 2026
Senior / Staff Research Engineer, Simulation Assets & Content SystemsWaabiSeries CToronto, ONJul 30, 2026
Research Engineer, Real EnvironmentsMercorSeries CSan FranciscoJul 24, 2026
Research Engineer, Training & InferenceHarmonic AISeries CPalo AltoMay 7, 2026
Research Engineer, Sensor Signal ProcessingWaabiSeries CToronto, ONApr 24, 2026
Research EngineerForusSeries CNew York officeApr 22, 2026
Research EngineerSkild AISeries CMultiple locationsApr 15, 2026
Research Engineer, Post-training & DeploymentSkild AISeries CMultiple locationsApr 15, 2026
Research Engineer, World ModelsWaabiSeries CToronto, ONApr 2, 2026
Research Engineer - Environments, Data and Post-TrainingMercorSeries CSan FranciscoMar 25, 2026
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FAQ

How many Research Engineer jobs are open at Series C AI startups?

There are currently 30 open Research Engineer jobs across 13 Series C AI startups on Fast AI Jobs.

Why filter Research Engineer jobs by funding stage?

Funding stage signals company size, runway, and equity upside. Filtering to Series C startups narrows the list to Research Engineer 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.