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Added 13 mins ago
Principal Systems Engineer Architect
Northrop Grumman
Melbourne, FL
Northrop Grumman Aeronautics Systems has an opening for a Principal Systems Engineer Architect to join our team of qualified, diverse individuals. This position will be located on-site in…
Added 13 mins ago
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Principal Design Engineer - XBOX
Microsoft
United States
- $142,800 to $304,200 USD / year
XBOX is seeking a Principal Design Engineer to shape developer and creator tools for game developers and players. Working at the intersection of design and engineering, you’ll turn…
Added 13 mins ago
M
Principal Firmware Engineer
Microsoft
WA · Redmond, WA · Redmond
- $142,800 to $304,200 USD / year
We are seeking a Principal Firmware Engineer to define firmware architecture and requirements that align with Azure features, partner closely with silicon and board design teams, and help…
Added 14 mins ago
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Principal Software Engineer
Microsoft
WA · Redmond, WA · Redmond
- $142,800 to $304,200 USD / year
We are looking to welcome a Principal Software Engineer to a group of innovative, energetic and diverse engineers on the CoPilot Runtime Platform team, which is the engineering organization…
Added 24 mins ago
M
Principal Software Engineer - AI Experiences, Advertising
Microsoft
CA · WA · Mountain View, CA · Redmond, WA · Mountain View · Redmond
- $142,800 to $304,200 USD / year
If you're a Principal Software Engineer passionate about AI innovation, Copilot experiences, and building systems that empower thousands of sellers and marketers worldwide, this is your…
Added 35 mins ago
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Principal Software Engineer
Microsoft
WA · NY · CA · Redmond, WA · Mountain View, CA · Sunnyvale, CA · Redmond · New York · Mountain View · Sunnyvale
- $142,800 to $304,200 USD / year
As a Principal Software Engineer, on the Substrate Application Platform team, you will help build the next generation platform for internal and external developers and agents to access M365…
Added 36 mins ago
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Principal Software Engineer - Cloud Infrastructure & AI Systems
Microsoft
WA · TX · OR · CA · NC · Redmond, WA · Austin, TX · Hillsboro, OR · Mountain View, CA · Raleigh, NC · Redmond · Austin · Hillsboro · Mountain View · Raleigh
- $142,800 to $304,200 USD / year
The Firmware Center of Excellence (FW CoE) is responsible for the hardware, firmware, and platform software stack that powers Azure's global infrastructure. We are seeking a Principal…
Added 36 mins ago
M
Principal Software Engineer
Microsoft
United States
- $165,600 to $331,200 USD / year
Added 36 mins ago
M
Principal Hardware Engineer
Microsoft
WA · CA · OR · NC · TX · Redmond, WA · Mountain View, CA · Hillsboro, OR · Raleigh, NC · Austin, TX · Redmond · Mountain View · Hillsboro · Raleigh · Austin
- $142,800 to $304,200 USD / year
We are looking for a Principal Hardware Engineer to join the team.
Added 58 mins ago
Product Manager
VEHLO
Remote, United States
Across every part of the auto repair industry, Vehlo is igniting vehicle service success with software and financial solutions that unlock your potential. Our founder-led products power the…
Added 1 hour ago
M
FLEX Android Senior Software Engineer
Marriott
Bethesda, MD
- $48.26 to $86.58 USD / hour
You’ll collaborate with top-tier talent - including Principal Engineers, Engineering Directors, Solution Architects, Product Leads, UX Designers, QA Engineers and more - to deliver…
Added 1 hour ago
Principal Engineer Manufacturing/ 4th Shift
Northrop Grumman
Baltimore, MD
Northrop Grumman Mission Systems Sector has an immediate need for 4th shift Manufacturing Process Engineer 3 to support the Final Assembly area within manufacturing . The primary location…
Added 1 hour ago
Principal/Senior Principal Electronics Engineer
Northrop Grumman
Baltimore, MD
This Principal / Senior Principal Electronics Engineer position requires hands-on experience troubleshooting complex systems, experience working with Test and Measurement equipment, and…
Added 1 hour ago
Principal Modeling Simulation and Analysis Systems Engineer
Northrop Grumman
Baltimore, MD
We are looking for a Principal Modeling Simulation and Analysis Systems Engineer to join our team in Baltimore, MD. This position requires 100% on-site work.
Added 1 hour ago
Chief Engineer (Staff Engineer)
Morgan Pinnacle Group
San Francisco · San Francisco, CA
6–14 years of software engineering experience, with experience operating at the Staff or Principal Engineer level.
Added 2 hours ago
Principal Engineer - Digital Wealth
Citigroup
Irving, TX
The Digital S/W Engineer Group Mgr is accountable for management of complex/critical/large professional disciplinary areas. Leads and directs a team of professionals. Requires a…
Added 3 hours ago
Principal Engineer, Threat Hunting
T-Mobile USA, Inc.
Bellevue, WA · Overland Park, KS · Frisco, TX
The Principal Engineer, Threat Hunter is critical to protecting T-Mobile’s digital assets, serving on the Continuous Hunting and Offensive Specialists (CHAOS) team, T-Mobile’s elite…
Added 4 hours ago
Sr. Engineer Firmware Engineering XII
Vertiv
United States
The Sr. Firmware Engineer will develop, sustain, and provide technical ownership of embedded firmware solutions for Single Phase UPS products. The role focuses on real-time DSP/MCU firmware…
Added 4 hours ago
O
Principal Core Infrastructure Engineer
Oracle
Austin, TX
- $114,600 to $234,600 USD / year
Oracle Cloud Infrastructure (OCI) is hiring a Principal Core Infrastructure Engineer to join the Next Gen Network Observability team. Help build cloud-scale intelligence systems that enable…
Added 5 hours ago
Principal Software Engineer - Simulation Data, Validation & Infrastructure
Irving, TX
…computing, intelligent automation, and rigorous validation. This Principal Engineer role is a hands-on technical leadership position responsible for architecture, critical implementation,…
Added 5 hours ago
Principal Software Engineer - Robotics & Physical AI Simulation
Irving, TX
This Principal Engineer role is a hands-on technical leadership position responsible for architecture, critical implementation, engineering standards, cross-team alignment, and mentoring.
Added 5 hours ago
Principal Software Engineer - Digital Twin and Simulation Platform
Irving, TX
This Principal Engineer role is a hands-on technical leadership position responsible for architecture, critical implementation, engineering standards, cross-team alignment, and mentoring.
Added 5 hours ago
Principal Software Engineer - Agentic AI & Simulation Automation
Irving, TX
This Principal Engineer role is a hands-on technical leadership position responsible for architecture, critical implementation, engineering standards, cross-team alignment, and mentoring.
Added 5 hours ago
Site Civil Engineer PE
Woolpert, Inc
Philadelphia, PA
Added 5 hours ago
Principal Systems Engineer - P5
Boston Scientific
Maple Grove
Boston Scientific is seeking a highly motivated and experienced Principal Systems Engineer - P5 to provide technical leadership in the development of complex medical device systems within…

Microsoft

Principal Software Engineer

WA, United States
Redmond, WA, United States
Redmond, United States

$142,800 to $304,200 USD / year

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Job details

Pay: $142,800 to $304,200 USD / year
Apply by: May 4, 2027
Posting language: English
Posted: Nov 5, 2026

Original job description

Overview

We are looking to welcome a Principal Software Engineer to a group of innovative, energetic and diverse engineers on the CoPilot Runtime Platform team, which is the engineering organization responsible for the foundational platform powering Microsoft 365 Copilot. We build the runtime, orchestration, data access, grounding, storage, observability, reliability, and developer infrastructure that enables AI-powered experiences across Microsoft 365. As part of the team, you will work on large-scale distributed systems, AI platform architecture, enterprise search and grounding technologies, developer frameworks, platform extensibility, reliability engineering, and next-generation Copilot experiences. Our engineers partner across Microsoft to deliver secure, scalable, and highly available AI services that serve millions of users worldwide. This role offers the opportunity to influence the future architecture of Microsoft 365 Copilot while solving challenging problems at the intersection of distributed systems, AI, search, data platforms, and cloud-scale services.

Microsoft’s mission is to empower every person and every organization on the planet to achieve more. As employees we come together with a growth mindset, innovate to empower others, and collaborate to realize our shared goals. Each day we build on our values of respect, integrity, and accountability to create a culture of inclusion where everyone can thrive at work and beyond.

Responsibilities

Partner with internal and external stakeholders to understand and incorporate user requirements and feedback into solutions.
Lead architectural discussions and design of complex products, including evaluation of multiple design options, creating proposals, making design decisions, and coaching less experienced team members. Establish and promote best coding and security practices, scaling solutions to meet performance, security, and scalability needs.
Partner with stakeholders to drive project and release planning while ensuring adherence to security, privacy, compliance, and operational considerations. Identify dependencies across teams and technologies, coordinate collaboration, and drive alignment on schedules and responsibilities.
Serve as a designated responsible individual (DRI) for live-site incident monitoring, coordination, resolution, and prevention efforts. Maintain live service operations, implement mitigations for complex issues, improve on-call processes, and promote secure operations.
Lead by example in producing extensible, maintainable, secure, well-tested code, applying coding best practices, and managing development risks. Conduct thorough code reviews ensuring adherence to standards, test coverage, security, and best practices.

Lead identification and application of AI automation, tooling and agentic approaches across the software lifecycle incorporating Responsible AI principles and SDLC engineering health measures.

Stay current with Microsoft standards, industry trends and new technologies, share knowledge, and lead learning activities. Ensure compliance with security, privacy, safety, and accessibility standards, maintain audit trails, and understand regulatory requirements.
Collaborate with partner teams to ensure integration, scalability, performance, and escalation pathways before release.

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:

Master's Degree in Computer Science or related technical field AND 8+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR Bachelor's Degree in Computer Science or related technical field AND 12+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python
OR equivalent experience.
Experience with AI‑native development where AI systems - not humans - perform most of the product lifecycle (research, specification, design, coding, testing), while humans provide direction, architecture, and approval. It treats AI as a core architectural assumption from day one, with continuous learning loops, probabilistic output handling, and AI‑driven pipelines.

#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.

Microsoft is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to age, ancestry, citizenship, color, family or medical care leave, gender identity or expression, genetic information, immigration status, marital status, medical condition, national origin, physical or mental disability, political affiliation, protected veteran or military status, race, ethnicity, religion, sex (including pregnancy), sexual orientation, or any other characteristic protected by applicable local laws, regulations and ordinances. If you need assistance with religious accommodations and/or a reasonable accommodation due to a disability during the application process, read more about requesting accommodations.

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