**Overview** We are looking for a talented and experienced **Principal Software Engineer** to join Bing Crawler team in MAI Web Data Platform org. The Microsoft AI (MAI) builds comprehensive and engaging content, services, and platforms for consumers to access the information they need anywhere on any device and for enterprises to enhance their employee and customer experiences. At Web Data Platform Team, we build the global web scale Index and the platform that supports it. You will be responsible for designing, developing and improving the architecture and codebase of our large-scale web crawler platform system, which fetch, render, process, and store billions of web pages every day. You will also have the opportunity to mentor a team of software engineers, drive technical innovation and decisions, and collaborate with other teams across Bing and Microsoft. 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. In alignment with our Microsoft values, we are committed to cultivating an inclusive work environment for all employees to positively impact our culture every day. 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. **Responsibilities** + Design the architecture of Crawler system, ensuring scalability, efficiency, performance and quality. + Implement features in a distributed and scalable environment using data to guide and measure success. + Develop and execute unit, integration, and performance tests to ensure the system is reliable, robust, and meets quality standards. + Debug and mitigate incidents in live production environments. + Stay up to date with the latest industry trends and technologies and proactively suggest improvements to the existing system. + Collaborate closely with cross-functional teams, including product managers and other engineers, to align development goals with business objectives. **Qualifications** **Required Qualifications:** + Bachelor'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, JavaScript, or Python + OR equivalent experience. + 7+ years of professional software development experience. + Proficiency in at least one high-level programming language including but not limited to: C++, C#, Java, Golang or Rust. + Good communication, collaboration and problem-solving skills. + Fluent English speaking and writing. **Other Requirements:** Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings: + **Microsoft Cloud Background Check:** This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter. **Preferred Qualifications:** + Experience of large-scale distributed system. + Familiarity with online service high performance tuning. + Familiarity with large-scale data processing and storage. + Nice to have crawling system experience. + Nice to have search engine platform development experience. + Nice to have machine learning project experience. 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. (https://careers.microsoft.com/v2/global/en/accessibility.html)