Principal Software Engineer - Identity

The ID Cache Team is part of Microsoft Security’s Identity division, focused on providing managed caching infrastructure for internal customers. We build and operate a cloud-like offering where our customers request a set of caching clusters and we take care of everything else. We are responsible for all parts of the system, including managing OS level and application updates, monitoring, lifecycle management and incident remediation. We build our platform at scale in public and sovereign clouds. Because of the scale and environmental diversity, automation and its continuous improvement is our daily bread. We use open-source tools, such as Ansible and Telegraf as well as Microsoft specific automation frameworks. We also develop from scratch components of our system where we have outgrown standard solutions. Our culture values curiosity, ownership, and continuous improvement — whether we’re investigating issues, tweaking our monitoring system or preparing a complex migration of the entire fleet. If you are passionate about combining software engineering with systems engineering and dev-ops, and intrigued by being responsible for a platform with large scale, ID Cache is the place for you. 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.

Lead the design, implementation, and long-term evolution of a scalable infrastructure platform powered by agentic tools. Own the end-to-end development of features, ensuring reliability, performance, and operational stability. Partner with engineering, product, and incident management teams to improve service health, observability, and operational readiness. Participate in on-call rotations and live-site investigations, driving long-term solutions to prevent recurring issues. Elevate engineering quality through robust testing strategies, clear documentation, and disciplined release practices. Mentor engineers through design reviews, code reviews, and technical coaching, while strengthening the team's overall engineering foundation.

Required Qualifications: Bachelor's Degree in Computer Science or related technical field AND technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Rust, Python OR equivalent experience. Demonstrated professional experience in software engineering and/or site reliability engineering including designing, developing, and delivering software and systems solutions.  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 background and Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Master's Degree in Computer Science or related technical field AND technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, Rust, Python. Experience with Linux engineering. Experience designing, building, or maintaining large infrastructure systems. Demonstrated technical leadership (e.g., driving design reviews, guiding architecture decisions, improving engineering practices). Experience owning and delivering software systems across the full software development lifecycle.  Software Engineering IC5 - The typical base pay range for this role across Czechia is Kč 1,983,000.00 - Kč 3,553,000.00 per year. Certain roles may be eligible for benefits and other compensation. Find