Microsoft
Principal Software Engineer - Microsoft Substrate Data Plane team M365 Copilot App
$143K–$304K
Redmond, WA · On-site · Principal · Full-time · Posted Oct 21, 2026
- Experience
- 6+ years required; preferred alternatives are 8+ years with a master's degree or 12+ years with a bachelor's degree, or equivalent experience.
- Education
- Bachelor's Degree in Computer Science or related technical field, or equivalent experience.
About the job
Leads the architecture, development, and operation of distributed data services and agent-enabled platforms supporting Microsoft 365, Copilot, and AI-powered experiences.
What you'll do
- Design, build, and operate highly available cloud services and distributed systems, emphasizing scalability, reliability, performance, and security.
- Develop platform capabilities for AI experiences, including agent orchestration, tool execution, data access, grounding, and workflow automation.
- Lead cross-team technical initiatives, improve service health, shape platform strategy, and mentor engineers.
What they ask for
- Bachelor's Degree in Computer Science or related technical field and 6+ years of technical engineering experience coding in languages including C, C++, C#, Java, JavaScript, or Python, or equivalent experience.
Nice to have
- Master's Degree in Computer Science or related technical field and 8+ years of technical engineering experience, or Bachelor's Degree in the field and 12+ years, or equivalent experience.
- Experience with modern AI-driven software development practices, tools, and feedback loops.
Pay
USD $142,800 - $274,800 per year (base salary); USD $188,000 - $304,200 per year (base salary)
Tools
C, C++, C#, Java, JavaScript, Python
AI focus
Build platform capabilities for AI-powered experiences, including agent orchestration, tool execution, data access, grounding, and workflow automation; use AI-assisted diagnostics and AI-driven software development practices.
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