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MiddleLayer

Jobs at startups backed by the best investors.

We only list companies backed by top investors, and roles taken from their real career pages.

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© 2026 MiddleLayerIndependent · not affiliated with YC or a16z

MiddleLayer

Jobs at startups backed by the best investors.

We only list companies backed by top investors, and roles taken from their real career pages.

Jobs Firms Companies How it works API

© 2026 MiddleLayerIndependent · not affiliated with YC or a16z

8,522roles

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Research Operations Lead, BiologyPosted Jul 8

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Operations, External ArtifactsPosted May 5

AnthropicRemoteCommunicationsPrivateSequoiaSpark

Research Engineer, Visual Knowledge WorkPosted Jan 16

AnthropicNew York CityEngineeringPrivateSequoiaSpark

Research Engineer, UniversesPosted Jan 9

AnthropicRemoteEngineeringPrivateSequoiaSpark

Research Engineer / Scientist, Frontier Red Team (Cyber)Posted Jan 23

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer / Scientist, AlignmentPosted Apr 14

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer / Research Scientist, TokensPosted Oct 10

AnthropicNew York CityEngineeringPrivateSequoiaSpark

Research Engineer/Research Scientist, Pre-trainingPosted Jul 18

AnthropicRemoteEngineeringPrivateSequoiaSpark

Research Engineer / Research Scientist, Pre-trainingPosted Feb 27

AnthropicZürichEngineeringPrivateSequoiaSpark

Research Engineer, Production Model Post-TrainingPosted Feb 12

AnthropicZürichEngineeringPrivateSequoiaSpark

Research Engineer, Production Model Post-TrainingPosted Apr 1

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Pretraining ScalingPosted Sep 30

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Performance RL (Reinforcement Learning) Posted Mar 23

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Model EvaluationsPosted Apr 28

AnthropicRemoteEngineeringPrivateSequoiaSpark

Research Engineer, Machine Learning (RL Velocity)Posted Apr 23

AnthropicRemoteEngineeringPrivateSequoiaSpark

Research Engineer, Machine Learning (Reinforcement Learning) Posted Apr 1

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Life SciencesPosted Jul 3

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Knowledge TeamPosted Apr 23

AnthropicRemoteEngineeringPrivateSequoiaSpark

Research Engineer, InterpretabilityPosted Nov 7

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Economic Research Data PlatformPosted Jan 16

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Domain ScalingPosted Jun 19

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, DiscoveryPosted May 14

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Cybersecurity RL (Reinforcement Learning)Posted Dec 9

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Computer UsePosted Jun 30

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Code RL (Reinforcement Learning)Posted Jun 11

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Chip Design RL (Reinforcement Learning)Posted Jul 13

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Economist, Economic ResearchPosted Jan 22

AnthropicSan FranciscoPublic BenefitPrivateSequoiaSpark

Head of Global RenewalsPosted Jun 2

AnthropicSan FranciscoSalesPrivateSequoiaSpark

Red Team Engineer, SafeguardsPosted Jul 10

AnthropicRemoteSafeguards (Trust & Safety)PrivateSequoiaSpark

Recruiter, Mergers & Acquisitions Posted Jun 3

AnthropicSan FranciscoPeoplePrivateSequoiaSpark

Recruiter, AI ResearchPosted Oct 2

AnthropicSan FranciscoPeoplePrivateSequoiaSpark

Real Estate Portfolio ManagerPosted Feb 3

AnthropicSan FranciscoPeoplePrivateSequoiaSpark

Product Support SpecialistPosted Nov 7

AnthropicNew York CityProductPrivateSequoiaSpark

Product Operations Manager, EmbeddedPosted Apr 12

AnthropicSan FranciscoProductPrivateSequoiaSpark

Product Manager, Safeguards (Verticals)Posted Feb 3

AnthropicSan FranciscoProductPrivateSequoiaSpark

Product Manager, Safeguards Rare HarmsPosted Jun 11

AnthropicSan FranciscoProductPrivateSequoiaSpark

Product Manager, Safeguards (Child Safety)Posted Jul 7

AnthropicSan FranciscoProductPrivateSequoiaSpark

Product Manager, Multi-Cloud Growth - GooglePosted Mar 27

AnthropicSan FranciscoProductPrivateSequoiaSpark

Product Manager, EnterprisePosted Jun 11

AnthropicSan FranciscoProductPrivateSequoiaSpark

Product Manager, Claude Code Model Performance Posted Jun 4

AnthropicSan FranciscoProductPrivateSequoiaSpark

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8,522 open roles