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Staff+ Software Engineer, Experimentation

AnthropicSan Francisco, CA | Seattle, WASoftware Engineering - Infrastructure
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Salary
Not listed
Job type
Full-time
Posted
2 Jul 2026
Status
Open · checked 7d ago

About this role

The Staff+ Software Engineer, Experimentation position at Anthropic is a full-time infrastructure role based in San Francisco, California or Seattle, Washington, designed for experienced technical leaders passionate about developer productivity. This position suits a senior engineer with a strong background in large-scale configuration and experimentation systems who wants to build foundational infrastructure for AI development.

Role Overview

Anthropic's Infrastructure organization supports the development of reliable, interpretable, and steerable AI systems by enabling efficient training and safe scaling of models like Claude. Within the Developer Productivity team, this role centers on configuration management, feature flagging, and A/B testing platforms used across research and production workloads. The position operates on a location-based hybrid policy requiring staff to be in the office at least 25% of the time, while offering visa sponsorship support for qualified candidates.

Key Responsibilities

Own the technical strategy, architecture, and roadmap for configuration and experimentation infrastructure.
Design and build scalable, reliable distributed systems and shared libraries to support high-volume experimentation workloads.
Maintain and enhance platforms for feature flagging, dynamic configuration, and safe rollout mechanisms such as gradual rollouts and kill switches.
Establish standards, tooling, and frameworks that empower engineers and researchers to safely ship changes and measure impact.
Partner closely with deployment and testing teams to solve complex infrastructure challenges.

Requirements

Bring 15+ years of professional experience in a Software Engineer role, focusing on building and operating large-scale developer infrastructure.
Bring 3+ years of experience leading complex, large-scale projects or teams as an engineer or tech lead.
Hold a Bachelor's degree or an equivalent combination of education, training, and professional experience in a relevant field of study.
Possess deep experience with configuration management, feature flagging, and experimentation platforms in large-scale environments.
Demonstrate strong proficiency in programming languages such as Python, Rust, and/or Go.
Have experience with container orchestration, infrastructure at scale, developer-facing services, and CI/CD pipelines.

Nice to Have

Experience with commercial or open-source config and experimentation platforms such as Statsig, GrowthBook, LaunchDarkly, Optimizely, or Unleash.
Background in designing comprehensive experimentation frameworks encompassing randomization, assignment, metrics pipelines, and statistical analysis.
Experience building CLI tools and automation workflows.

Skills and Tools

Programming Languages: Python, Rust, Go
Systems and Platforms: Configuration management, feature flagging, A/B testing platforms, container orchestration, CI/CD pipelines
Concepts: Dynamic configuration, gradual rollouts, kill switches, targeting rules, randomization, statistical analysis

Salary and Benefits

Annual Salary Range: $405,000 to $485,000 USD
Competitive compensation and benefits package
Optional equity donation matching
Generous vacation and parental leave policies
Flexible working hours and collaborative office spaces

About the Company

Anthropic is a public benefit corporation focused on building reliable, interpretable, and steerable AI systems that are safe and beneficial for society. Operating as a collaborative team of researchers, engineers, and policy experts, the organization treats AI research as an empirical science akin to physics and biology, tackling large-scale initiatives to advance trustworthy artificial intelligence.

How to Apply

Candidates should review the details and submit an application directly on the official Anthropic careers page.

Skills and tech stack

Questions candidates ask

What are the location requirements for this role?

The role is based in San Francisco, CA or Seattle, WA, with a location-based hybrid policy requiring staff to work from an office at least 25% of the time.

What is the annual salary range for the Staff+ Software Engineer position?

The annual base salary ranges from $405,000 to $485,000 USD.

What level of experience is required?

Candidates must have 15+ years of experience in a Software Engineer role building and operating large-scale developer infrastructure, plus 3+ years leading complex projects or teams.

Does Anthropic offer visa sponsorship for this position?

Yes, Anthropic sponsors visas for this role and makes every reasonable effort to secure a visa with the help of a retained immigration lawyer if an offer is extended.

What programming languages are required or preferred?

Strong proficiency in Python, Rust, and/or Go is required for this role.

Ready to apply?

The application is on the official Anthropic careers page.

Apply on company site