Senior Software Engineer - Browser Platform

Job ID: 200027964Posted: 2026-02-18Location: United States, Washington, RedmondSalary: USD $119,800 - $234,700 per yearEmployment type: Full-TimeWork site: 4 days / week in-officeRole type: Individual ContributorTravel: Less than 25%Profession: Software EngineeringDiscipline: Software EngineeringCompany: MicrosoftOverviewThe Edge browser is a core strategic product and key entry point to Microsoft’s new AI ecosystem, serving hundreds of millions of users daily. As the hypercompetitive AI browser ecosystem evolves, the Edge team is focused on continuing to lead. The Edge Web Platform engineering team is looking for a Senior Software Engineer - Browser Platform to join its on-device ML team to help deliver on-device ML capabilities developers want via new and evolving web APIs such as WebNN, the Prompt API, the Writing Assistance API, and more.Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.  Starting January 26, 2026, Microsoft AI (MAI) employees who live within a 50- mile commute of a designated Microsoft office in the U.S. or 25-mile commute of a non-U.S., country-specific location are expected to work from the office at least four days per week. This expectation is subject to local law and may vary by jurisdiction.ResponsibilitiesCollaborate with teams across many parts of Microsoft, including with researchers to evaluate and optimize cutting-edge on-device models.Develop evaluation pipelines and datasets to ensure models meet developers’ needs.Integrate the models and runtimes into Edge and collaborate to improve the full on-device ML stack.Engage with the web ecosystem—including through the open web standards process—to ensure API designs are high quality and enable cross-browser interoperability.Contribute directly to the Chromium project for aspects that can be shared with other Chromium-based browsers.QualificationsRequired Qualifications:Bachelor's Degree in Computer Science or related technical field AND 4+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, or PythonOR equivalent experience.Preferred Qualifications:Master's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, or PythonOR Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java or PythonOR equivalent experience.Past experience contributing to a large-scale software engineering project.Past experience with evaluating and training ML models.Solid design, coding, and debugging skills in modern programming languages.#MicrosoftAI #microsoftedgeSoftware Engineering IC4 - The typical base pay range for this role across the U.S. is USD $119,800 - $234,700 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $160,200 - $261,000 per year. Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.