Microsoft

Principal Software Engineer-M365 Copilot

Microsoft$142K — $274K *
Consumer Technology
5 - 7 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's Degree in Computer Science or related field and 6+ years of technical engineering experience in languages such as C, C++, C#, Java, JavaScript, or Python.
  • 6+ years of experience in designing and operating large-scale, ML-driven systems in production.
  • Ability to influence architecture and mentor engineers in ambiguous environments.
  • 5+ years of experience developing AI/ML or GenAI products from ideation to shipping.
  • Experience with distributed systems and ML pipelines in production.

Responsibilities

  • Serve as a technical leader for AI and ML-based services, staying ahead of industry trends.
  • Lead architectural design for complex backend and ML systems, ensuring security and scalability.
  • Define and drive engineering quality strategies with metrics and best practices.
  • Collaborate with cross-functional teams to align on requirements and deliver impactful features.
  • Create and enhance internal tools to boost developer efficiency and system effectiveness.
  • Mentor engineers through code and design reviews to elevate technical standards.
  • Embody the company culture and values.

Benefits

  • Comprehensive health and wellness programs.
  • Retirement savings plan options.
  • Professional development and continuous learning opportunities.
  • Flexible work hours and environment.
  • Generous parental leave.
Full Job Description
Overview

As a Principal Software Engineer, you will architect and lead the development of LLMs (Large Language Models) and the supporting subsystems that power product scenarios and GenAI capabilities across Microsoft 365 experiences. You will set technical direction, partner with research and engineering teams to deliver best-in-class solutions, align senior stakeholders, drive the design of custom LLM architectures for product needs, and design the backend, data, and ML systems that empower teams across the organization - while mentoring engineers and raising the technical bar.
The ideal candidate is an AI-forward technical leader who thrives in fast-paced, ambiguous environments, sets direction amid uncertainty, and delivers outsized impact through both hands-on engineering and technical leadership. If you're passionate about building high-quality systems, solving complex technical problems, and elevating the engineers around you, this role is a strong fit.

Responsibilities

  • Serve as a technical leader and domain expert for shipping AI- and ML-based intelligent services and products, staying ahead of industry trends and applying them to influence product and platform direction.
  • Lead architectural design for complex backend, data, and ML systems that meet security, compliance, scalability, and reliability requirements, and translate vision into actionable milestones, estimates, and plans.
  • Define and drive engineering quality strategy - establishing metrics, standard practices, and reusable design patterns that raise reliability, maintainability, and developer efficiency across the team.
  • Partner with stakeholders and cross-functional teams - including product managers, applied scientists, and data engineers - to align on requirements, incorporate feedback, and deliver high-impact features and platform improvements.
  • Lead the creation and improvement of internal tools and frameworks that accelerate developer velocity, automation, and overall system effectiveness.
  • Mentor and grow engineers through code reviews, design reviews, and technical guidance, raising the bar for engineering excellence across the team.
  • Embody our culture and values.


Qualifications

Required Qualifications:

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.

Other Requirements:
Ability to meet Microsoft, customer and/or government security screening requirements are required for this role. These requirements include but are not limited to the following specialized security screenings:

Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter.

Preferred Qualifications:
  • 6+ years experience designing, implementing, and operating large-scale, distributed backend, data-intensive, or ML-driven and evaluation systems in production.
  • Demonstrated ability to set technical direction, influence architecture, and mentor engineers to deliver measurable impact in fast-paced and ambiguous environments.
  • Proven ability to drive cross-team engineering initiatives, balancing hands-on contributions with strategic technical leadership.
  • 5+ years' experience developing and deploying AI/ML or GenAI products or systems at multiple points in the product cycle from ideation to shipping.
  • Experience architecting and operating large-scale distributed systems, data platforms, or ML pipelines in production.
  • Experience working with SOTA AI tooling to accelerate software development lifecycle.
  • Experience with Azure platforms and modern deployment practices such as CI/CD, containerization, and microservices.
  • Experience defining and tracking engineering metrics such as performance, reliability, and observability, and mentoring engineers to raise technical quality.
  • A growth mindset, passion for continuous learning, and drive to make both systems and teams more efficient and effective.

#CAP #Copilot

Software Engineering IC5 - The typical base pay range for this role across the U.S. is USD $142,800 - $274,800 per year. There is a different range applicable to specific work locations, within the San Francisco Bay area and New York City metropolitan area, and the base pay range for this role in those locations is USD $188,000 - $304,200 per year.

Certain roles may be eligible for benefits and other compensation. Find additional benefits and pay information here:
https://careers.microsoft.com/us/en/us-corporate-pay

This position will be open for a minimum of 5 days, with applications accepted on an ongoing basis until the position is filled.

About Microsoft

Microsoft is an American multinational corporation that develops, manufactures, licenses, supports, and sells a range of software products and services. Microsoft’s devices and consumer (D&C) licensing segment licenses the Windows operating system and related software, Microsoft Office for consumers, and the Windows Phone operating system. The company’s computing and gaming hardware segment provides Xbox gaming and entertainment consoles and accessories, second-party and third-party video games, and Xbox Live subscriptions; surface devices and accessories; and Microsoft PC accessories. Its phone hardware segment offers Lumia smartphones and other non-Lumia phones. Its D&C segment provides Windows Store, Xbox Live transactions, and Windows phone store; search advertising; display advertising; Office 365 Home and Office 365 Personal; first-party video games; and other consumer products and services as well as operating retail stores. Microsoft’s commercial licensing segments license server products, including Windows Server, Microsoft SQL Server, Visual Studio, System Center, and related Client Access Licenses (CALs); Windows Embedded; Windows operating system; Microsoft Office for business, including Office, Exchange, SharePoint, Lync, and related CALs; Microsoft Dynamics business solutions; and Skype. Its commercial segment offers enterprise services, including premier support services and Microsoft consulting services; commercial cloud comprising Office 365 Commercial, other Microsoft Office online offerings, Dynamics CRM Online, and Microsoft Azure; and other commercial products and online services. The company markets and distributes its products through original equipment manufacturers, distributors, and resellers, as well as online.

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Learn more about Microsoft
Size
181,000 employees
Market Cap
$1,762.4 billion
Industry
Net Income
$51.3 billion
Founded
1975
5 Year Trend
+15.5%
Revenue
$153.2 billion
NASDAQ

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