Anthropic
Senior Staff Software Engineer, API
$405K–$485K
San Francisco, CA +2 · Senior Staff · Full-time · Posted Feb 26, 2026
- Location
- San Francisco, CA
New York City, NY
San Francisco, California, United States - Experience
- 12+ years; job logistics additionally state that required years correlate with internal job-level requirements.
- Education
- Bachelor’s degree or an equivalent combination of education, training, and/or experience; relevant field of study demonstrated through coursework, training, or professional experience.
- Visa sponsorship
- Visa sponsorship is available, but not for every role or candidate; if an offer is made, Anthropic will make every reasonable effort to obtain a visa and provides immigration-lawyer support.
About the job
Sets technical strategy and leads high-impact engineering across the Claude API, enabling reliable, scalable access to Claude for developers, enterprises, and partners.
What you'll do
- Define multi-year technical strategy and make major architectural decisions across API Engineering.
- Lead complex, high-impact initiatives spanning teams and partner organizations; identify and address systemic technical risks.
- Mentor Staff-level engineers and align technical work with Product, GTM, Safety, Research, and infrastructure teams.
What they ask for
- 12+ years of engineering experience, with a track record operating at Staff or Senior Staff level.
- Demonstrated experience shaping technical strategy for large-scale API or distributed-systems platforms.
- Deep expertise in distributed systems and API architecture, including design documentation, architectural decisions, and coding in critical paths.
- Ability to lead through influence and collaborate effectively across organizational boundaries.
Nice to have
- Strong product instincts and a craftsperson’s approach to API design.
- Clear communication with technical and non-technical audiences.
Pay
$405,000 — $485,000 USD (base salary)
Tools
Python, Golang, Rust, GCP, AWS, Azure, Kubernetes, PostgreSQL (AlloyDB)
AI focus
Integrate frontier model capabilities into the Claude API, including vision, tool use, computer use, retrieval and grounding, and infrastructure for production agentic workflows.
Model-written summary · the original posting is authoritative