Senior Web Compatibility Engineer

The role

You will ensure websites work in DuckDuckGo's browsers across Mac, Windows, iOS, and Android. You will own the webcompat side of the triage process, debug code, and ship durable fixes across platforms.

What you will do

• Own the webcompat side of the triage process
• Debug issues in code you do not control
• Distinguish site bugs from browser bugs from privacy protection-induced breakage
• Lead the charge when a top site breaks and becomes an incident
• Ship durable fixes across every platform
• Work on projects that prevent user churn
• Reverse-engineer how sites detect privacy protections and build countermeasures
• Shim browser APIs so sites work across different browser engines and system webviews
• Build LLM agent pipelines to reproduce and triage reported site breakage

Required qualifications

• 7+ years of experience building and debugging complex web applications with vanilla JavaScript
• Detailed knowledge of web standards, web components, and browser APIs
• Advanced ability to reverse-engineer obfuscated third-party code and reduce issues to minimal test cases
• 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

Nice to have

• Swift/Kotlin/C#/C++/Python

Benefits

• Stock options
• Paid parental leave
• Office setup
• Co-working allowances

Before you apply

• You will be required to attend meetings on camera via video conferencing
• Expect to travel at least two times a year
• A successful candidate must pass a background check
• By applying, you consent to the use of AI technology in the review process

About the company

DuckDuckGo is an online protection company and remote-first team of 400+ on a mission to raise the standard of trust online. It is a profitable company with annual revenue in the hundreds of millions USD.