Drimva

Microsoft

Principal Software Engineer, M365 Enterprise Search Platform

$143K–$304K

Redmond, WA · On-site · Principal · Full-time · Posted Sep 25, 2026

Experience
6+ years technical engineering experience; or equivalent experience. Preferred: 8+ years of software engineering experience building large-scale cloud services and distributed systems.
Education
Bachelor's Degree in Computer Science or related technical field, or equivalent experience.

About the job

Designs and operates search, retrieval, and RAG systems that ground Microsoft 365 Copilot in organizational data, while shaping large-scale platform architecture and agentic engineering practices.

What you'll do

  • Design and build search, retrieval, and RAG solutions for Microsoft 365 Copilot.
  • Develop, debug, test, and troubleshoot large-scale distributed systems, driving reliability, performance, scalability, and operational excellence.
  • Collaborate across engineering and product teams, influence technical strategy, and apply agentic engineering practices to improve development efficiency.

What they ask for

  • Bachelor's Degree in Computer Science or related technical field and 6+ years technical engineering experience coding in languages including C, C++, C#, Java, JavaScript, or Python; or equivalent experience.
  • Ability to meet Microsoft, customer and/or government security screening requirements, including the Microsoft Cloud Background Check.

Nice to have

  • 8+ years of software engineering experience building large-scale cloud services and distributed systems.
  • Experience with search, retrieval, AI or RAG platforms, and modern AI and Agentic Engineering practices.

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

Builds search, retrieval, and RAG systems for Microsoft 365 Copilot and applies autonomous or semi-autonomous agents across software design, coding, testing, deployment, reliability engineering, and operations.

Model-written summary · the original posting is authoritative

First seen Oct 15, 2026 · Last verified Nov 5, 2026 (UTC)