Staff Software Engineer, Claude Code

About Anthropic

Anthropic’s mission is to create reliable, interpretable, and steerable AI systems. We want AI to be safe and beneficial for our users and for society as a whole. Our team is a quickly growing group of committed researchers, engineers, policy experts, and business leaders working together to build beneficial AI systems.

At Anthropic, we believe new AI capabilities are best achieved through secure foundations, not in spite of them. As capabilities grow more advanced, it is critical that progress moves forward safely and for the benefit of all society. It is the reason why security sits at the center of our work, and not as an afterthought. 

We're specifically looking for a Software Engineer to help us build and maintain new agentic coding tools for developers. The ideal candidate will have a passion for developer tools, extensive knowledge of diverse programming environments and languages, and experience with advanced LLM features like tool-use, chaining and orchestration patterns, and prompt engineering. Curiosity about AI research is a must!

Responsibilities:

Design, build, and maintain scalable features and infrastructure for AI-powered development tools

Engage directly with developers inside and outside Anthropic to gather insights and improve user experience

Collaborate with researchers to improve model capabilities through shared tools and evals

Stay ahead of advancements in AI-assisted coding by experimenting with new tools, evaluating emerging techniques, and tracking enhancements to existing ones

Contribute across the stack—from front-end UI to back-end infrastructure—to develop new features, fix bugs, and optimize performance

Dive into possibly unfamiliar areas like Python notebooks, VS Code plug-ins, and containerized environments.

You may be a good fit if you:

Are excited about AI-assisted coding as a tool to enhance developer productivity and creativity—not replace human ingenuity

Spend a lot of time refining and customizing your AI workflows

Have experience building and maintaining dev tools

Are an expert in React development, including performance optimization, modern patterns (hooks, context, suspense), and component architecture

Specialize in user experience engineering but are a capable full stack developer

Have hands-on experience working with large language models and prompt engineering

Have worked on projects with stringent safety, security and/or compliance requirements

Care about the societal impacts and ethics of your work

Have 6+ years of work experience

Strong candidates may also have experience with:

Building and maintaining CLI tools

Working in large codebases and quickly jumping in to unfamiliar development environments

Working with container orchestration and cloud infrastructure

Scaling TypeScript projects

Working with alternate JavaScript runtimes like Bun and Deno

The annual compensation range for this role is listed below. 

For sales roles, the range provided is the role’s On Target Earnings ("OTE") range, meaning that the range includes both the sales commissions/sales bonuses target and annual base salary for the role.

Annual Salary: $320,000 — $625,000 USD

Logistics

Minimum education: Bachelor’s degree or an equivalent combination of education, training, and/or experience

Required field of study:  A field relevant to the role as demonstrated through coursework, training, or professional experience

Minimum years of experience: Years of experience required will correlate with the internal job level requirements for the position

Location-based hybrid policy: Currently, we expect all staff to be in one of our offices at least 25% of the time. However, some roles may require more time in our offices.

Visa sponsorship:  We do sponsor visas! However, we aren't able to successfully sponsor visas for every role and every candidate. But if we make you an offer, we will make every reasonable effort to get you a …