Anthropic

Senior Staff Software Engineer, API

Anthropic
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8 months ago
San Francisco, CA, USA or New York, NY, USAStaff+
H1B sponsor

Base Salary

$405k - $485k/yr

Responsibilities

  • Define and drive multi-year technical strategy across API Core, API Capabilities, API Knowledge, API Distributability, and API Agents.
  • Personally lead the highest-complexity, highest-impact engineering initiatives spanning multiple teams.
  • Serve as the primary technical decision-maker for major organization-wide architectural decisions.
  • Partner with Research, Inference, Platform, Infrastructure, and Safeguards on reliable, secure, and responsible API delivery at scale.
  • Mentor and develop Staff-level engineers across the organization.
  • Drive alignment across Product, GTM, Safety, and other stakeholders while identifying and addressing systemic technical risks.

Requirements

  • 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 decision-making, and coding in critical paths.
  • Ability to lead high-leverage technical outcomes through influence without formal authority.
  • Strong cross-organizational collaboration skills with technical, research, infrastructure, business, and safety stakeholders.
  • Strong product instincts and expertise in API design.
  • Clear communication skills with both technical and non-technical audiences.
  • At least a Bachelor's degree in a related field or equivalent experience.

Benefits

  • Annual compensation range of $405,000—$485,000 USD.
  • Hybrid policy requiring staff to work from an office at least 25% of the time.
  • Visa sponsorship with immigration lawyer support.
  • Competitive benefits, optional equity donation matching, generous vacation and parental leave, flexible working hours, and office collaboration space.
  • Applications reviewed on a rolling basis with no application deadline.
  • Preference for candidates based in New York or the San Francisco Bay Area.
Anthropic

About Anthropic

5,001-10,000 employees

Anthropic builds large language models and the Claude AI assistant for developers and enterprises, offered via API access and enterprise plans. Founded in 2021 and headquartered in San Francisco, it distributes Claude through its own platform and via partners such as Amazon Bedrock and Google Cloud’s Vertex AI. Its work emphasizes model reliability, interpretability, and practical tooling for tasks like coding assistance, analysis, and customer support automation.

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