All Series D+ jobs
Series D+ · Research Engineer

Series D+ AI Startup Research Engineer Jobs

There are currently 64 open Research Engineer jobs across 12 Series D+ AI startups. Every listing links straight to the company's official application page, deduplicated and refreshed daily.

64Open roles
12Companies hiring
Aug 3, 2026Last updated
01

Open Research Engineer Roles at Series D+ AI Startups

RoleCompanyStageLocationPosted
[Expression of Interest] Research Engineer / Scientist, Alignment - LondonAnthropicSeries G+London, UKAug 3, 2026
ML/Research Engineer, SafeguardsAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Chip Design RL (Reinforcement Learning)AnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Code RL (Reinforcement Learning)AnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Computer UseAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Cybersecurity RL (Reinforcement Learning)AnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, DiscoveryAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Domain ScalingAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Economic Research Data PlatformAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, InterpretabilityAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Knowledge FoundationsAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Knowledge TeamAnthropicSeries G+Remote (Friendly (Travel-Required))Aug 3, 2026
Research Engineer, Life SciencesAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Machine Learning (Reinforcement Learning)AnthropicSeries G+London, UKAug 3, 2026
Research Engineer, Machine Learning (Reinforcement Learning)AnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Machine Learning (RL Velocity)AnthropicSeries G+Remote (Friendly (Travel-Required))Aug 3, 2026
Research Engineer, Machine Learning (RL Velocity)AnthropicSeries G+London, UKAug 3, 2026
Research Engineer, Model EvaluationsAnthropicSeries G+Remote (Friendly (Travel-Required))Aug 3, 2026
Research Engineer, Performance RL (Reinforcement Learning)AnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, PretrainingAnthropicSeries G+London, UKAug 3, 2026
Research Engineer, Pretraining ScalingAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Pretraining Scaling - LondonAnthropicSeries G+London, UKAug 3, 2026
Research Engineer, Production Model Post-TrainingAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, Production Model Post-TrainingAnthropicSeries G+Zürich, CHAug 3, 2026
Research Engineer, RL Scaling ScienceAnthropicSeries G+London, UKAug 3, 2026
Research Engineer / Scientist, AlignmentAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer / Scientist, Frontier Red Team (Cyber)AnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer (Senior Staff+), Safeguards LabsAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer, UniversesAnthropicSeries G+Remote (Friendly (Travel-Required))Aug 3, 2026
Research Engineer, Visual Knowledge WorkAnthropicSeries G+New York City, NYAug 3, 2026
Staff Research Engineer, Discovery TeamAnthropicSeries G+San Francisco, CAAug 3, 2026
Research Engineer / Scientist (Robot Learning)World LabsSeries ESan FranciscoJul 27, 2026
Staff Research Engineer, Data AgentsDatabricksSeries G+San Francisco, CaliforniaJul 24, 2026
Research EngineerDecagonSeries DSan FranciscoJul 22, 2026
Research EngineerTuringSeries EColombia, Huila, ColombiaJul 20, 2026
Research EngineerTuringSeries EBrazilJul 20, 2026
Staff Research Engineer - CodeTuringSeries ESan Francisco, California, United StatesJul 20, 2026
Staff Research Engineer - Multimodal Generative ModellingSynthesiaSeries EEuropeJul 17, 2026
Machine Learning Systems Research Engineer, Agent Post-training - Enterprise GenAIScale AISeries G+San Francisco, CAJul 9, 2026
Senior Research EngineerNetradyneSeries DBangaloreJul 1, 2026
Senior Staff Research EngineerNetradyneSeries DBangaloreJul 1, 2026
Staff Research EngineerNetradyneSeries DBangaloreJul 1, 2026
Senior Research Engineer - Safety Tooling and DataCohereSeries DNew YorkJun 26, 2026
Research Engineer, Post-TrainingHarveySeries G+San FranciscoJun 26, 2026
Research Engineer (Scaling Multimodal Data)World LabsSeries ESan FranciscoJun 11, 2026
Research Engineer / Scientist (3D Reconstruction)World LabsSeries ESan FranciscoJun 11, 2026
Research Engineer / Scientist (3D Tech Lead)World LabsSeries ESan FranciscoJun 11, 2026
Research Engineer / Scientist (SLAM)World LabsSeries ESan FranciscoJun 11, 2026
Principal Applied Research EngineerSynthesiaSeries EEuropeMay 22, 2026
Senior Research Engineer, Voice + SpeechDecagonSeries DNew York CityMay 18, 2026
View all Research Engineer jobs
02

FAQ

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

There are currently 64 open Research Engineer jobs across 12 Series D+ 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 D+ 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.