Senior Web Compatibility Engineer

As a Senior Web Compatibility Engineer, you'll be our resident expert on why websites break and how to fix them: owning the webcompat side of our triage process, debugging gnarly issues in code you don't control, distinguishing site bugs from browser bugs from privacy protection-induced breakage, leading the charge when a top site breaks and becomes an incident, shipping durable fixes across every platform, and work on related projects that prevent user churn and keep users coming back to DuckDuckGo.

About You

• 7+ years of experience building and debugging complex web applications with vanilla JavaScript.
• Detailed knowledge of web standards, web components, and browser APIs. Any additional experience with our stack is a bonus: Swift/Kotlin/C#/C++/Python.
• Advanced ability to reverse-engineer obfuscated third-party code and reduce issues to minimal test cases.
• Passion for hunting elusive bugs and tracing them to their root cause.
• Interest in automating repetitive work and building agentic tooling that multiplies the team's impact.
• Experience triaging issues, leading incident response, and communicating clearly with technical and non-technical stakeholders.
• Experience shipping code beyond the web, like native or desktop clients.
• Ability to lead complex, ambiguous projects with little to no oversight.