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Series A · Research Engineer

Series A AI Startup Research Engineer Jobs

There are currently 24 open Research Engineer jobs across 15 Series A AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

24Open roles
15Companies hiring
Jun 4, 2026Last updated
01

Open Research Engineer Roles at Series A AI Startups

RoleCompanyStageLocationPosted
Research EngineerDatology AISeries ARedwood CityJun 4, 2026
Prompting & AI Agent Research EngineerHello PatientSeries AUS RemoteJun 3, 2026
Prompting & AI Agent Research EngineerHello PatientSeries ANew York, NYJun 3, 2026
Prompting & AI Agent Research EngineerHello PatientSeries AAustin, TexasJun 3, 2026
Senior Research EngineerMem0Series ASan Francisco Bay AreaMay 20, 2026
Data Research EngineerFundamentalSeries ABarcelonaMay 14, 2026
Research Engineer, Frontier CapabilitiesLila SciencesSeries ACambridge, MA USAMay 14, 2026
Senior / Engineer II, AI Lab Research EngineerLila SciencesSeries ACambridge, MA USAMay 14, 2026
Staff / Principal Research Engineer, AI Safety, Technical MitigationsLila SciencesSeries ACambridge, MA USAMay 14, 2026
Research Engineer – EvalsFirecrawlSeries ASan Francisco, CA (Hybrid) OR Remote (Americas, UTC-3 to UTC-10)May 13, 2026
Research Engineer, Multimodal DataEventual ComputingSeries ASan FranciscoApr 29, 2026
Research EngineerHedraSeries ASan FranciscoApr 15, 2026
Senior Applied Research EngineerFundamentalSeries ABarcelonaMar 25, 2026
Research Engineer — Search/IRFirecrawlSeries ASan Francisco, CA (Hybrid) OR Remote (Americas, UTC-3 to UTC-10)Mar 18, 2026
Research Engineer — Reinforcement LearningFirecrawlSeries ASan Francisco, CA (Hybrid) OR Remote (Americas, UTC-3 to UTC-10)Mar 18, 2026
Platform Research EngineerApplied ComputeSeries ASan FranciscoMar 10, 2026
Member of Technical Staff - Forward Deployed Research EngineerPatronus AISeries AMar 2, 2026
Member of Technical Staff - Research EngineerComposioSeries AsfFeb 10, 2026
Controls Research EngineerDyna RoboticsSeries ARedwood City, CAJan 28, 2026
Research EngineerHeyGenSeries ALos Angeles, Toronto, SingaporeJan 15, 2026
Liquid Labs - Research EngineerLiquid AISeries ABostonDec 3, 2025
Applied Research EngineerApplied ComputeSeries ASan FranciscoOct 29, 2025
Research Engineer/ ScientistDyna RoboticsSeries ARedwood City, CAAug 22, 2025
Research Engineer - Generative Humanoid Motion GenerationFlexion RoboticsSeries AZürich, Zurich, Switzerland-
02

FAQ

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

There are currently 24 open Research Engineer jobs across 15 Series A 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 A 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.