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Principal Software Engineer - Data, Personalization - Microsoft AI

United States, Washington, Redmond💼 Full-time🗓 2026-07-21 → 2026-07-31

Core

Architect scalable, low-latency systems for ingesting, processing, and serving personalized signals to enable Copilot to reason about user context, preferences, and history.

Role type

Principal Software Engineer - Data, Personalization

Builds

Real-time and batch personalization engines that adapt Copilot's behavior

Domain

AI / Personalization / Cloud Infrastructure

Deliverable

production ML models | infrastructure

Required skills

C, C++, C#, Java, JavaScript, Python, scalable service architecture, cloud infrastructure security, OSS data technology (Kafka, Spark, Flink), large scale data systems, AI platforms, Machine Learning frameworks, language learning models deployment

Preferred skills

experience deploying and scaling language learning models

Technologies

Azure, AWS, GCP, Kafka, Spark, Flink

Responsibilities

Design data models and APIs for user context reasoning, optimize performance and cost across diverse workloads, collaborate with privacy and security teams, ship high-quality secure code, resolve complex technical issues

Seniority

Principal, hands-on IC

Rewrite
## About the role - Architect scalable, low-latency systems for ingesting, processing, and serving personalized signals. - Design data models and APIs that enable Copilot to reason about user context, preferences, and history. - Build real-time and batch personalization engines that adapt Copilot's behavior. - Collaborate with privacy, security, and responsible AI teams to ensure personalization is safe, transparent, and user-controlled. - Optimize for performance, reliability, and cost across diverse workloads and geographies. - Ship high-quality, well-tested, secure, and maintainable code. - Find a path to get things done despite roadblocks to get your work into the hands of users quickly and iteratively. - Enjoy working in a fast-paced, design-driven, product development cycle. - Embody our Culture and Values. ## Requirements - 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, JavaScript, or Python OR equivalent experience. - 4+ years' experience building scalable services, including securing applications and infrastructure on top of cloud infrastructure like Azure, AWS, or GCP. - 3+ years' experience in OSS data technology, such as Kafka, Spark, Flink. - Experience with large scale data systems. - Experience working with AI platforms, frameworks, and APIs. - Experience using Machine Learning frameworks, including experience using, deploying, and scaling language learning models, either personally or professionally. - Ability to identify, analyze, and resolve complex technical issues, ensuring optimal performance, scalability, and user experience. - Demonstrated interpersonal skills and ability to work closely with cross-functional teams, including product managers, designers, and other engineers. - Passion for learning new technologies and staying up to date with industry trends, best practices, and emerging technologies in web, data systems and AI. - Ability to work in a fast-paced environment, manage multiple priorities, and adapt to changing requirements and deadlines. - Proven ability to collaborate and contribute to a positive, inclusive work environment, fostering knowledge sharing and growth within the team.
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