Model Performance Software Engineer, Claude Code

Anthropic
San Francisco
Workplace: HybridFull timeUSD 320,000 - 485,000 annuallyFunction: Software EngineeringEducation: bachelorsSkills: ["Communication","Problem-solving"]

Software engineer at the intersection of engineering and AI research, focused on Claude Code. You will design eval systems, build scalable tooling and infrastructure for researchers, develop data pipelines, and create internal tools, while bridging product and research to prioritize capabilities. Own end-to-end systems from design to production reliability in a fast-paced environment with collaborators across research and product.

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FursaFursa
Anthropic
Anthropic
6 months ago

Model Performance Software Engineer, Claude Code

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Canonical indexed version, validated from employer's careers page.

Source: Company careers pageValidated by: Fursa AI
Last checked: 8 hours agoStatus: Live

Job Summary

Software engineer at the intersection of engineering and AI research, focused on Claude Code. You will design eval systems, build scalable tooling and infrastructure for researchers, develop data pipelines, and create internal tools, while bridging product and research to prioritize capabilities. Own end-to-end systems from design to production reliability in a fast-paced environment with collaborators across research and product.
Location: San Francisco
Workplace: Hybrid
Employment Type: Full time
Job Function: Software Engineering

Key Responsibilities

  • •Design and build eval systems that measure model capabilities across diverse coding tasks.
  • •Build tooling and infrastructure that enables researchers to run experiments at scale.
  • •Develop pipelines for data collection, processing, and analysis.
  • •Create internal tools that improve researcher productivity and accelerate iteration cycles.
  • •Bridge between product and research—inform which capabilities matter most and translate research questions into engineering solutions.

Pay and Benefits

Salary: USD 320,000 - 485,000 annually
Equity and Bonus:Equity
Perks:EquityParental LeavePaid Leave

Key Requirements

  • •Have built and owned complex systems—pipelines, infrastructure, or software that orchestrates many components and handles significant state and logic.
  • •Thrive in high-intensity environments with fast iteration cycles.
  • •Take full ownership of problems and drive them to completion independently.
  • •Are a power user of agentic coding tools and have strong intuition about model capabilities and limitations.
  • •Are comfortable diving into unfamiliar technical domains and figuring things out quickly.
Experience:AIResearchEngineering
Education:Bachelor's
Skills:CommunicationProblem-solving
Languages:English
Tech Stack:PythonTypeScript

Company Brief

Anthropic
Develops large-scale AI systems and safety research to create reliable, steerable, and interpretable AI assistants and models for commercial and research applications.
Industry: AI & Machine Learning
Company Size: Enterprise (1,001+ employees)
Growth: Scaleup
Valuation: Unicorn (USD 1B+)
Funding: Series C
Headquarters: San Francisco, United States
Founded: 2021
WebsiteLinkedIn