Anthropic · 7 hours ago
Model Quality Software Engineer, Claude Code
San Francisco, CA
Full-time
Hybrid
Senior Level
$320K/yr - $485K/yr
5+ years expAnthropic is a public benefit corporation focused on creating reliable and beneficial AI systems. They are seeking a Software Engineer to improve Claude’s coding capabilities through tooling, infrastructure, and evaluations, while collaborating closely with researchers to enhance the system's performance.
Artificial Intelligence (AI)Foundational AIGenerative AIInformation TechnologyMachine Learning
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
Serve as a bridge between product and research—bring strong product intuition to inform which capabilities matter most
Work closely with researchers to translate research questions into engineering solutions
Own systems end-to-end—from design through production reliability
Qualification
Required
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
Care deeply about correctness and reliability in the systems you build
Are excited to work at the boundary between engineering and AI research
Have at least 5 years of work experience
We require at least a Bachelor's degree in a related field or equivalent experience
Preferred
Writing or maintaining eval frameworks
Reinforcement learning systems
Working in high-performance, demanding environments—trading firms, quant funds, competitive research labs, or fast-moving startups where intensity is the norm
Have research computing or scientific infrastructure background
Have a strong quantitative foundation (math, physics, or related fields)
Python and TypeScript
Benefits
Optional equity donation matching
Generous vacation and parental leave
Flexible working hours
Company
Anthropic
Anthropic is an AI research company that focuses on the safety and alignment of AI systems with human values.
501-1000 employees
H1B Sponsorship
Anthropic has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (105)
2024 (13)
2023 (3)
2022 (4)
2021 (1)
Funding
Current Stage
Late StageTotal Funding
$33.74BKey Investors
Lightspeed Venture PartnersGoogleAmazon
2025-09-02Series F· $13B
2025-05-16Debt Financing· $2.5B
2025-03-03Series E· $3.5B
Leadership Team
Dario Amodei
Co-Founder and CEO
Daniela Amodei
President and co-founder
Recent News
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Company data provided by crunchbase