Wills M.

I’m a staff software engineer with experience leading developer-platform and AI-enablement work at Pinterest and Uber. I build new products, improve existing systems, and diagnose production problems across the stack. At Pinterest, I designed an internal coding-agent harness and secure macOS execution environment, helped teams adopt Cursor and agent-based workflows across iOS, Android, web, and API development, and built migration and validation tooling for Objective-C-to-Swift work. At Uber, I led web-platform improvements used by more than 1,200 developers across 600 applications and cut CI time from 47 to 19 minutes. I can help with: • Full-stack applications and product features • Backend services, APIs, and third-party integrations • Production debugging, performance work, and refactoring • Workflow automation and data processing • Developer tools, CI/CD, build systems, and test infrastructure • AI-assisted development workflows with explicit review and validation I work most often in Python, Rust, JavaScript/TypeScript, React, Node.js, and SQL. I can also work in unfamiliar stacks when the outcome can be checked through tests, reproducible builds, and clear acceptance criteria. For defined work, I can use fixed-price milestones. For an unclear bug or inherited system, I can begin with a paid investigation. I deliver the code, tests for risky paths, and a concise written handoff.