Principal Software Engineer

At Microsoft Edge, we keep people safe on the Internet. We are looking for a Principal Software Engineer who can develop improvements from fundamental coding architecture to user interventions, spanning both traditional web browser scenarios and the novel attack vectors unveiled with agentic browsing. You will work with partners in the browser, outside the browser, and even outside the company to ensure that the user maintains both security and peace-of-mind end-to-end, without any unnecessary compromises to the user's performance or experience. You will work on durable architectures that are self-monitoring and self-healing with minimal human intervention. You will identify longstanding patterns of problems and drive permanent solutions, even if that requires rethinking long-held assumptions. You will identify appropriate cases to use recent AI innovations, both to smooth the development process itself and in product scenarios. You will create automated testing and also telemetry systems which validate that our methods are still working despite a changing Internet landscape, and when they stop working, you will help to identify what changed and adapt to the new reality. You will work with the team, learning from them and especially spreading your learning to them, through means such as knowledge transfer, creating or sharing tools and techniques, giving high-quality code review feedback, or setting a great example through your coding patterns.