Microsoft · 8 hours ago
Principal UX Performance Architect
Redmond, WA
Full-time
Onsite
Senior Level, Lead/Staff
$140K/yr - $275K/yr
6+ years expMicrosoft is a technology company that empowers every person and organization on the planet to achieve more. In this role, the Principal UX Performance Architect will lead the design and evolution of Microsoft 365 Copilot Chat client architecture, ensuring fast, reliable, and scalable performance, while collaborating with various teams to deliver high-leverage solutions.
Application Performance ManagementArtificial Intelligence (AI)Business DevelopmentData ManagementDevOpsInformation ServicesInformation TechnologyManagement Information SystemsNetwork SecuritySoftware
Responsibilities
Tune application performance and memory management across Chat client surfaces (e.g., M365 Copilot, Teams, Outlook, Word, Excel, PowerPoint etc.), optimizing runtime memory health, working set efficiency, and performance under diverse workloads
Lead memory health initiatives, including memory gates, automated regression detection, and tooling to isolate and resolve issues quickly, ensuring visibility into memory behavior
Build advanced analytics and debuggability systems enabling rich and scalable trace and heap snapshot collection, stack inspection and retainer path analysis
Drive cross-team collaboration with runtime partners (e.g., Edge), platform teams, and feature owners to improve garbage collection, reference handling, and memory protection
Mentor engineers and influence technical direction across the M365 Copilot Chat Fundamentals org, fostering a culture of memory excellence, performance, and continuous learning
Model our culture of growth mindset, clarity, accountability, and inclusive behaviors, removing systemic blockers so your team ships with agility and quality
Embody our culture and values
Qualification
Required
Bachelor's Degree in Computer Science or related technical field AND 6+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python - OR equivalent experience
6+ years of professional software engineering experience, with 4+ years focused on frontend development using React and TypeScript
3+ years of proven track record of leading architecture and performance initiatives with a focus on application memory in large-scale systems
4+ years experience of React fundamentals and understanding of component lifecycle, state management, and performance optimization techniques
3+ years of demonstrated experience in memory profiling, heap analysis, and runtime performance tuning
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
Preferred
Exposure to CI/CD pipelines (e.g., Azure DevOps, GitHub Actions), cloud hosting (e.g., Azure CDN, Micro services), and monitoring tools
Familiarity with server-side rendering techniques and performance tools like Chrome DevTools, and React Profiler
Security, compliance, privacy‑by‑design mindset; experience with cost‑aware engineering and performance optimization
Experienced collaborating with PM and design; communicates clearly with both technical and non-technical audiences
Company
Microsoft
Microsoft is a software corporation that develops, manufactures, licenses, supports, and sells a range of software products and services.
10001+ employees
H1B Sponsorship
Microsoft has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (7425)
2024 (9343)
2023 (7677)
2022 (11403)
2021 (7210)
2020 (7852)
Funding
Current Stage
Public CompanyTotal Funding
$1MKey Investors
Technology Venture Investors
2022-12-09Post Ipo Equity
1986-03-13IPO
1981-09-01Series Unknown· $1M
Leadership Team
Satya Nadella
Chairman and CEO
Vukani Mngxati
Chief Executive Officer - Microsft South Africa
Recent News
2025-12-31
Digital Trends
2025-12-31
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