Staff Software Engineer, Claude Code

Anthropic
San Francisco2026-08-07

About the job

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.

Qualifications

Minimum

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

Have 6+ years of work experience

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

Preferred

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