Senior Web Compatibility Engineer - DuckDuckGo

About DuckDuckGo

We are DuckDuckGo, the online protection company and a remote-first team of 300+ on a mission to raise the standard of trust online. Founded in 2008 and profitable since 2014, our annual revenue now exceeds $100M USD. Millions of users rely on our browser across Mac, Windows, iOS, and Android, our search engine, and our latest offering, Privacy Pro. Our culture of trust, inclusivity, and empowered project management underpins everything we do.

Your Team and Role

As part of the Web Dependability Engineering team, you will ensure websites work seamlessly in DuckDuckGo's browsers across Mac, Windows, iOS, and Android.

Recent projects include:

• Reverse-engineering how sites detect our privacy protections and building countermeasures.
• Shimming browser APIs so sites work across different browser engines and system webviews.
• Building LLM agent pipelines that automatically reproduce and triage reported site breakage.

As a Senior Web Compatibility Engineer, you will be our resident expert on why websites break and how to fix them. You will own the webcompat side of our triage process, debug complex issues in third-party code, distinguish site bugs from browser or privacy protection issues, lead incident response for top site breakages, and ship durable fixes across all platforms.

About You

• Experience: 7+ years of experience building and debugging complex web applications with vanilla JavaScript.
• Technical Knowledge: Detailed knowledge of web standards, web components, and browser APIs. Experience with Swift, Kotlin, C#, C++, or Python is a bonus.
• Reverse-Engineering: Advanced ability to reverse-engineer obfuscated third-party code and reduce issues to minimal test cases.
• Problem Solving: A passion for hunting elusive bugs, tracing them to their root cause, and leading complex, ambiguous projects with minimal oversight.
• Automation: Interest in automating repetitive work and building agentic tooling to multiply team impact.
• Leadership & Communication: Experience triaging issues, leading incident response, and communicating clearly with both technical and non-technical stakeholders.
• Cross-Platform: Experience shipping code beyond the web, such as native or desktop clients.

Compensation and Benefits

• Salary: $178,500 USD annually.
• Equity: Stock options.
• Benefits: Paid parental leave, office setup allowance, and co-working allowances.
• Health Benefits: Company-sponsored health benefits are available for US-based team members.
• Travel: Expect to travel at least twice a year for our all-hands meetup and team retreats (4-5 days each).
• Work Hours: Flexible work arrangement with no core hours (average full-time commitment of 40 hours per week).