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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

Engineering×Remove Engineering Clear all

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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 3w ago

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Knowledge TeamPosted Apr 23

AnthropicRemoteEngineeringPrivateSequoiaSpark

Research Engineer, Knowledge FoundationsPosted Apr 23

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

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 3w ago

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

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

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Research Engineer, Chip Design RL (Reinforcement Learning)Posted 1w ago

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Performance Engineer, Inference SystemsPosted May 20

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Performance Engineer, GPUPosted Sep 22

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Performance EngineerPosted Apr 22

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Model Performance Software Engineer, Claude CodePosted Feb 2

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

ML/Research Engineer, SafeguardsPosted Oct 9

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Life Sciences Operator, LeadPosted 1w ago

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Lead, Frontier Red Team (Cyber)Posted 1w ago

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Full-Stack Software Engineer, Reinforcement LearningPosted Apr 14

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

[Expression of Interest] Research Manager, InterpretabilityPosted Nov 7

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Engineering Manager, UI PlatformPosted Feb 12

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Engineering Manager, Research ProductivityPosted May 22

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Engineering Manager, Research Data PlatformPosted 2w ago

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Engineering Manager, InferencePosted May 29

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Engineering Manager, GrowthPosted 1w ago

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Engineering Manager, GPU (ML Accelerator)Posted May 29

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Engineering Manager, EnterprisePosted Jun 13

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

Engineering Manager, Cybersecurity ProductsPosted May 30

AnthropicSan FranciscoEngineeringPrivateSequoiaSpark

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