Microsoft Teams is a mission critical collaboration platform used by hundreds of millions of people worldwide. The Teams Core organization builds the foundational services and platforms that enable Teams’ reliability, scale, performance, security, privacy, and extensibility.

We are seeking a Principal Software Engineer Manager for the Modern Triage Services team to lead an engineering team building core backend systems, distributed services, and platform capabilities that power Teams’ feeds & notifications every day. You’ll set technical direction, raise the engineering bar, and deliver platform improvements that measurably improve availability, latency, security posture, and developer productivity across the Teams ecosystem.

This role combines hands-on technical leadership with people leadership and cross-org influence. You’ll operate with high ownership in a fastmoving environment while delivering services that run at global scale.

Why This Role

• Lead platform work that directly improves Teams reliability and performance for users worldwide.
• Own high leverage architectural decisions across distributed services, data stores, networking, and service to service APIs.
• Build and mentor a solid senior engineering bench and shape the team’s engineering culture.
• Partner broadly across Product, Security/Privacy, Infrastructure, and Client teams to land end to end solutions.

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.

Technical Leadership & Architecture

• Own the architecture and evolution of core Teams services, building highly available, lowlatency distributed systems.
• Lead design reviews and set standards for reliability, scalability, security, privacy, and performance (SLAs, threat modeling, capacity planning, and performance budgets).
• Identify and mitigate systemic technical risks; drive simplification to reduce operational load and improve platform sustainability.
• Stay handson where it matters—deep dives, debugging, and prototypes—while empowering teams to execute independently.

Execution & Delivery

• Be accountable for shipping core platform capabilities that support millions of concurrent users with high availability and low latency.
• Drive predictable execution using agile practices, solid program management, and datadriven prioritization (quality, cost, and customer impact).
• Own livesite excellence: SLAs, alerts, incident response, postincident learning, and automation to prevent recurrence.
• Balance feature delivery with investments in platform robustness, scalability, and engineering efficiency.

People & Organization Leadership

• Lead, hire, mentor, and grow a team of software engineers; set clear expectations and career paths.
• Build inclusive, highperforming teams with solid ownership, psychological safety, and a bias for engineering excellence.
• Coach senior engineers and tech leads on execution, technical decisionmaking, and delivery excellence.
• Foster a culture of collaboration, quality, innovation and customer focus aligned with Microsoft values.
• Make AI a first-class production function.

CrossOrg Influence & Strategy

• Partner closely with Product Management, Security, Privacy, Client, and Infrastructure teams to deliver endtoend experiences.
• Influence technical and organizational decisions beyond your immediate team by building alignment, making tradeoffs explicit, and communicating clearly with senior leaders.
• Drive crossteam initiatives that improve platform velocity, resilience, and developer productivity (tooling, CI/CD, and operational automation).
• Define and deliver a multiquarter Teams Core technical roadmap, balancing reliability work, modernization, and feature enablement.