As Microsoft continues to redefine the future of AI, we are seeking passionate engineers to tackle some of the most complex and impactful challenges of our time. Our vision is bold , to build intelligent systems that deeply understand users and adapt across agents, applications, services, and infrastructure. This role focuses on building distributed data systems and APIs that power adaptive, context-aware experiences across Microsoft AI. We aim to make Copilot feel like your Copilot , responsive to your preferences, workflows, and goals , while preserving privacy, security, performance, and scale.
\nWe are looking for a Principal Software Engineer to lead the design and development of distributed data infrastructure, APIs and personalization pipelines that drive Copilot’s intelligence. You will work across Microsoft AI and Copilot teams. You will possess a methodical approach to problem-solving, proficiency in backend technologies, a familiarity with applied AI and its unique challenges, and the ability to architect solutions that stand the test of time.
\nThe right candidate is hands-on and enjoys building world-class consumer experiences and products in a fast-paced environment. A key skill is the judgment to make the right risk vs velocity and value decisions.
\nMicrosoft’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.
\nResponsibilities:
\nArchitect scalable, low-latency systems for ingesting, processing, and serving personalized signals.
\nDesign data models and APIs that enable Copilot to reason about user context, preferences, and history
\nBuild real-time and batch personalization engines that adapt Copilot’s behavior.
\nCollaborate with privacy, security, and responsible AI teams to ensure personalization is safe, transparent, and user-controlled
\nOptimize for performance, reliability, and cost across diverse workloads and geographies.
\nShip high-quality, well-tested, secure, and maintainable code.
\nFind a path to get things done despite roadblocks to get your work into the hands of users quickly and iteratively.
\nEnjoy working in a fast-paced, design-driven, product development cycle.
\nEmbody our Culture and Values.
\nQualifications:
\nRequired Qualifications:
\nBachelor’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, JavaScript, or Python OR equivalent experience.
\nPreferred Qualifications:
\n4+ years’ experience building scalable services, including securing applications and infrastructure on top of cloud infrastructure like Azure, AWS, or GCP.
\n3+ years’ experience in OSS data technology, such as Kafka, Spark, Flink.
\nExperience with large scale data systems
\nExperience working with AI platforms, frameworks, and APIs.
\nExperience using Machine Learning frameworks, including experience using, deploying, and scaling language learning models, either personally or professionally.
\nAbility to identify, analyze, and resolve complex technical issues, ensuring optimal performance, scalability, and user experience.
\nDemonstrated interpersonal skills and ability to work closely with cross-functional teams, including product managers, designers, and other engineers.
\nPassion for learning new technologies and staying up to date with industry trends, best practices, and emerging technologies in web, data systems and AI.
\nAbility to work in a fast-paced environment, manage multiple priorities, and adapt to changing requirements and deadlines.
\nProven ability to collaborate and contribute to a positive, inclusive work environment, fostering knowledge sharing and growth within the team.
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