Senior Staff Software Engineer, API
Anthropic · San Francisco, CA | New York City, NY · San Francisco, CA
CHECKED 4H AGO
Frontier labonsiteSenior Staff$405k–$485k
At a glance
Highlights
- Set technical direction for systems making Claude accessible at scale.
- Ship frontier capabilities like vision, tool use and computer use.
- Build infrastructure for long-horizon agentic workflows in production.
What they offer
- Competitive compensation and benefits
- Optional equity donation matching
- Generous vacation and parental leave
- Flexible working hours
Ideal candidate
High-agency technical leader who shapes platform strategy through influence and trust, pairing systems thinking with product craft and a drive to make Claude reliable and broadly useful.
Requirements
- 12+ years of engineering experience operating at Staff or Senior Staff level
- Shaped technical strategy for large-scale API or distributed systems platforms
- Drives highest-leverage outcomes through influence without formal authority
- Deep expertise in distributed systems and API architecture, including design docs and critical-path coding
- Effective across org boundaries with Research, Inference, Infrastructure, Safeguards and business stakeholders
- Strong product instincts and craft in API design with clear communication
- remote policy
- Hybrid - in office at least 25% of the time
- visa sponsorship
- We do sponsor visas, with reasonable effort and immigration lawyer support, though not for every role and candidate
Lab profile
About Anthropic
AI safety company building reliable, interpretable and steerable frontier AI systems.
What they build
- Claude
- Claude API
- Claude Code
Known for
- AI safety and alignment
- Model interpretability research
- Frontier LLM development
Key facts
- Founded in 2021
- Headquartered in San Francisco, California
- Backed by Amazon and Google