Principal Architect-UI Platforms

We are seeking a Principal Architect-UI Platforms to help guide the next phase of Windows UI Platform's evolution, including WinUI3. The successful candidate will blend strategic thinking with hands-on technical leadership and have the opportunity to influence a widely used platform while staying close to real developer scenarios.

Key Responsibilities:

• Design WinUI to be natively consumable by AI agents, with clear semantic models, stable abstractions, and predictable composition patterns.
• Use AI-assisted tooling and compatibility layers to enable low-friction migration from legacy Windows UI stacks and SwiftUI on macOS.
• Evolve WinUI into a truly declarative, state-driven framework that supports real-time personalization, adaptive layouts, and agent-driven UI mutation.
• Provide opinionated projections, simplified APIs, and familiar programming models that align with modern web and SwiftUI mental models.
• Architect WinUI so that a majority of UI code can be safely generated and maintained by AI agents.

Responsibilities

• Define and evolve the architectural direction for WinUI and related Windows UI components.
• Review and guide architecture and design proposals across multiple teams.
• Act as a trusted technical advisor and sounding board for senior engineers and leaders.
• Drive improvements in core platform fundamentals.
• Help identify and address common friction points that developers encounter.
• Influence API design patterns, lifecycle models, diagnostics, and tooling.
• Partner with PM and engineering teams to improve guidance and reduce friction for teams adopting newer UI technologies.
• Engage constructively with the developer community.
• Mentor senior ICs and aspiring architects.
• Promote clear written specs, design reviews, and thoughtful technical storytelling.

Requirements

• Bachelor's Degree in Computer Science or related technical field AND 8+ years technical engineering experience.
• Significant hands-on experience building desktop or rich-client applications.
• Depth in one or more UI frameworks for desktop or cross-platform development.
• Proficiency in C++ and/or C#.
• Experience navigating UI architecture tradeoffs.
• Demonstrated ability to influence technical direction.

Preferred Qualifications

• Master's Degree in Computer Science or related technical field AND 12+ years technical engineering experience.
• Experience modernizing or evolving an existing UI framework or large application platform.
• Experience designing developer-facing APIs or frameworks consumed by external teams or customers.
• Engagement with developer communities or open-source projects.