CrawlJobs Logo

Principal Software Engineer - Copilot Security

https://www.microsoft.com/ Logo

Microsoft Corporation

Location Icon

Location:
United States , Redmond, WA

Category Icon
Category:
IT - Software Development

Job Type Icon

Contract Type:
Not provided

Salary Icon

Salary:

163000.00 - 296400.00 USD / Year
Save Job
Save Icon
Apply Position

Job Description:

Copilot Security is at the core of Microsoft’s mission to deliver trusted, human-centered AI experiences. We make security and resilience intrinsic to every Copilot interaction—across devices, platforms, and ecosystems. Our work spans secure identity flows, defenses against emerging threats like prompt injection, and privacy-first systems that scale globally. Copilot for consumers is entering a new era of agentic AI, where intelligent agents act on behalf of users across Windows, Edge, web, mobile, and third-party products. We’re seeking a Principal Software Engineer to contribute to the development of security features and solutions that harness agentic AI to protect customers and enable new capabilities in Copilot. You’ll design, build, and ship AI-powered defenses, secure orchestration frameworks, and enabling technologies that empower Copilot to act safely and responsibly at scale. This role requires solid engineering skills, creativity in applying agentic AI to security challenges, and a passion for building systems that balance innovation with trust.

Job Responsibility:

  • Develop and ship agentic AI-powered security features that protect users from threats such as prompt injection, adversarial manipulation, and abuse of agentic workflows
  • Design and implement secure orchestration frameworks that enable Copilot to safely delegate, coordinate, and execute actions across devices, services, and platforms
  • Invent and apply new intelligent agents that leverage information flow analysis and apply common sense and judgement guardrails for security and privacy
  • Collaborate with product, engineering, security, privacy, and AI teams to drive adoption of agentic security patterns and best practices across Copilot and MAI
  • Monitor key metrics for agentic AI security and innovation, using data-driven insights to improve defenses and enablement
  • Align with central Microsoft security and AI roadmaps, landing platform capabilities in Copilot and MAI consumer scenarios
  • Document secure agentic AI patterns, ensuring they address novel risks, support safe delegation, and enable responsible orchestration of actions

Requirements:

  • Bachelor'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, Go, or Python OR equivalent experience
  • 8+ years in technical engineering roles building large-scale services
  • 8+ years hands-on experience designing and operating security-critical or AI-powered systems at scale, including agentic AI, secure orchestration, or advanced threat defenses
  • Proven ability to design, build, and ship agentic AI features or frameworks
  • Ability to clearly explain complex systems and security concepts to technical and non-technical stakeholders and influence cross-org roadmaps
  • Experience building production agent systems using frameworks such as LangGraph, Amazon Strands SDK, or similar platforms
  • familiarity with agentic design patterns including tool calling, multi-agent coordination, and secure delegation patterns
  • Hands-on experience with distributed training frameworks (Ray, Slurm, HPC), containerization and orchestration technologies (Docker, Kubernetes) for ML model deployment, and ML lifecycle management in production environments
  • Experience designing evaluation frameworks for LLM-based applications and implementing observability for agent systems using tools such as Phoenix, MLFlow, LangFuse, or custom eval harnesses
  • understanding of AI safety evaluation methodologies including adversarial testing and red-teaming
  • Experience integrating with Azure AI services, Azure OpenAI Service, or Microsoft security platforms (Azure AD, Defender, Purview)
  • Track record of mentoring engineers, driving adoption of secure agentic AI standards across product teams, and influencing technical roadmaps while balancing innovation velocity with fundamentals

Nice to have:

Master's Degree in Computer Science or related technical field AND 10+ 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

Additional Information:

Job Posted:
January 29, 2026

Employment Type:
Fulltime
Work Type:
On-site work
Icon
Microsoft Corporation - All Job Offers
Job Link Share:
Copy Link Icon
Facebook Icon Twitter Icon LinkedIn Icon

Looking for more opportunities? Search for other job offers that match your skills and interests.

Briefcase Icon

Similar Jobs for Principal Software Engineer - Copilot Security

New

Principal Software Engineer - Copilot Security

Copilot Security is at the core of Microsoft’s mission to deliver trusted, human...
Location
Location
United States , Redmond
Salary
Salary:
139900.00 - 274800.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 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
  • 8+ years in technical engineering roles building large-scale services
  • 6+ years hands-on experience designing and operating security-critical or AI-powered systems at scale, including agentic AI, secure orchestration, or advanced threat defenses
  • Proven ability to design, build, and ship agentic AI features or frameworks
  • Ability to clearly explain complex systems and security concepts to technical and non-technical stakeholders and influence cross-org roadmaps
  • Experience building production agent systems using frameworks such as LangGraph, Amazon Strands SDK, or similar platforms
  • familiarity with agentic design patterns including tool calling, multi-agent coordination, and secure delegation patterns
  • Hands-on experience with distributed training frameworks (Ray, Slurm, HPC), containerization and orchestration technologies (Docker, Kubernetes) for ML model deployment, and ML lifecycle management in production environments
  • Experience designing evaluation frameworks for LLM-based applications and implementing observability for agent systems using tools such as Phoenix, MLFlow, LangFuse, or custom eval harnesses
Job Responsibility
Job Responsibility
  • Develop and ship agentic AI-powered security features that proactively protect users from threats such as prompt injection, adversarial manipulation, and abuse of agentic workflows
  • Design and implement secure orchestration frameworks that enable Copilot to safely delegate, coordinate, and execute actions across devices, services, and platforms
  • Invent and apply new intelligent agents that leverage information flow analysis and apply common sense and judgement guardrails for security and privacy
  • Collaborate with product, engineering, security, privacy, and AI teams to drive adoption of agentic security patterns and best practices across Copilot and MAI
  • Establish and monitor key metrics for agentic AI security and innovation, using data-driven insights to continuously improve defenses and enablement
  • Align with central Microsoft security and AI roadmaps, influencing platform capabilities and landing them in Copilot and MAI consumer scenarios
  • Document and evangelize secure agentic AI patterns, ensuring they address novel risks, support safe delegation, and enable responsible orchestration of actions
  • Mentor engineers and foster a culture of secure innovation, balancing rapid development with rigorous protection for customers
  • Fulltime
Read More
Arrow Right
New

Principal Software Engineer - Copilot Identity

Consumer Copilot Security is at the core of Microsoft’s mission to deliver trust...
Location
Location
United States , Redmond
Salary
Salary:
163000.00 - 296400.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor'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 equivalent experience.
  • Master'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 Bachelor's Degree in Computer Science or related technical field AND 15+ years technical engineering experience with coding in languages including, but not limited to, C, C++, C#, Java, JavaScript, or Python OR equivalent experience.
  • Experience integrating with Microsoft Account, and familiarity with consumer identity features.
  • Cross‑platform delivery: Shipped identity flows and SDKs across multiple consumer client platforms (Windows, macOS, iOS, Android, web).
  • Governance & lifecycle: Familiarity with consumer identity lifecycle management and privacy controls.
  • Privacy/Compliance: Experience embedding privacy‑by‑design and meeting consumer compliance expectations for Copilot-class workloads.
  • Leadership: Track record mentoring senior engineers and driving adoption of platform standards across many product teams.
Job Responsibility
Job Responsibility
  • Identity strategy & architecture: Define the end‑to‑end identity vision for consumer Copilot and MAI, covering user/account models, sign‑in, session management, token issuance/validation, service‑to‑service auth, and cross‑device experiences.
  • Cross‑surface platform leadership: Drive common authentication/SSO patterns and SDKs for Windows, Edge, web, iOS, and Android
  • ensure seamless UX and consistent security controls across consumer surfaces and modalities.
  • Collaborate with product, engineering, security, privacy, and identity teams across Copilot, MAI and IDNA to drive improvements in authentication, identity, and security. Influence technical direction and best practices across a large, distributed system, ensuring alignment and adoption of key initiatives.
  • Establish, monitor, and continuously improve key authentication metrics across Copilot and MAI. Collaborate with engineering, product, and identity teams to align on a unified ground truth and leverage dashboards for ongoing measurement and root cause analysis
  • Align with central Microsoft Account roadmaps, influence platform capabilities, and land them in Copilot and MAI consumer scenarios at scale.
  • Define and document authentication patterns and requirements for AI-powered, agentic flows. Ensure these patterns address novel risks, support secure delegation, and enable safe orchestration of actions across devices and services.
  • Hands‑on engineering: Ship secure, well‑tested, maintainable code and frameworks that other teams can adopt quickly.
  • Product mindset: Balance customer experience with consumer-grade security, privacy, and compliance expectations for Copilot.
  • Work closely with globally distributed teams, managing effective communication, coordination, and project delivery across multiple time zones. Foster strong cross-regional partnerships to drive identity and authentication improvements at scale.
  • Fulltime
Read More
Arrow Right
New

Principal Software Engineering Manager, M365 Copilot

The M365 Copilot App Platform team is the team that provides the platform APIs, ...
Location
Location
United States , Redmond
Salary
Salary:
139900.00 - 274800.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 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
  • 4+ years of technical leadership of web services using Microsoft Azure
  • Ability to meet Microsoft, customer and/or government security screening requirements are required for this role
  • Microsoft Cloud Background Check: This position will be required to pass the Microsoft Cloud background check upon hire/transfer and every two years thereafter
Job Responsibility
Job Responsibility
  • Lead the M365 Copilot App middle-tier service working with other engineering managers and individual contributors
  • Lead the design and implementation of the middle-tier, APIs, deployment pipelines, and infrastructure
  • Collaborate with cross-functional teams to enable the M365 Copilot app and drive innovation
  • Work closely with partner teams to build new additional capabilities into our application and services
  • Design, produce and deliver software to improve reliability, scalability, performance, security, efficiency, etc.
  • Fulltime
Read More
Arrow Right

Principal Software Engineering Manager - M365 Copilot App

AI is transforming productivity in profound ways. As the new home of Office prod...
Location
Location
United States , Mountain View
Salary
Salary:
139900.00 - 274800.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 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, Swift, or Python OR equivalent experience.
  • 4+ years experience developing, shipping, and maintaining one or more large scale Windows, Mac, or Web applications.
  • 3+ years experience managing a skilled team, growing and nurturing talent, and hiring top engineers.
  • 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.
Job Responsibility
Job Responsibility
  • Guides partnership with appropriate stakeholders (e.g., project manager, technical lead) to determine user requirements within and across teams.
  • Guides teams and leads identification of dependencies and the development of design documents for a product, application, service, or platform.
  • Optimizes, debugs, refactors, and reuses code to improve performance and maintainability, effectiveness, and return on investment.
  • Guides team to drive multiple group's project plans, release plans, and work items in coordination with appropriate stakeholders.
  • Guides team and monitors other engineers across product lines, working on-call to monitor system/product/service for degradation, downtime, or interruptions.
  • Oversees product development and ensures products are scaled according to customer requirements, implementing appropriate techniques to address scaling and performance objectives.
  • Embody our culture and values.
  • Fulltime
Read More
Arrow Right
New

Principal Software Engineer - Data, Personalization - Microsoft AI

As Microsoft continues to redefine the future of AI, we are seeking passionate e...
Location
Location
United States , Redmond
Salary
Salary:
163000.00 - 296400.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor'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 equivalent experience
  • 4+ years' experience building scalable services, including securing applications and infrastructure on top of cloud infrastructure like Azure, AWS, or GCP
  • 3+ years' experience in OSS data technology, such as Kafka, Spark, Flink
  • Experience with large scale data systems
  • Experience working with AI platforms, frameworks, and APIs
  • Experience using Machine Learning frameworks, including experience using, deploying, and scaling language learning models, either personally or professionally
  • Ability to identify, analyze, and resolve complex technical issues, ensuring optimal performance, scalability, and user experience
  • Demonstrated interpersonal skills and ability to work closely with cross-functional teams, including product managers, designers, and other engineers
  • Passion for learning new technologies and staying up to date with industry trends, best practices, and emerging technologies in web, data systems and AI
  • Ability to work in a fast-paced environment, manage multiple priorities, and adapt to changing requirements and deadlines
Job Responsibility
Job Responsibility
  • Architect scalable, low-latency systems for ingesting, processing, and serving personalized signals
  • Design data models and APIs that enable Copilot to reason about user context, preferences, and history
  • Build real-time and batch personalization engines that adapt Copilot’s behavior
  • Collaborate with privacy, security, and responsible AI teams to ensure personalization is safe, transparent, and user-controlled
  • Optimize for performance, reliability, and cost across diverse workloads and geographies
  • Ship high-quality, well-tested, secure, and maintainable code
  • Find a path to get things done despite roadblocks to get your work into the hands of users quickly and iteratively
  • Enjoy working in a fast-paced, design-driven, product development cycle
  • Embody our Culture and Values
  • Fulltime
Read More
Arrow Right

Principal AI Architect and Security Strategist

Security represents the most critical priorities for our customers in a world aw...
Location
Location
United States , Multiple Locations
Salary
Salary:
163000.00 - 296400.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor'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 equivalent experience
  • Ability to meet Microsoft, customer and/or government security screening requirements
  • This position will be required to pass the Microsoft background and Microsoft Cloud background check upon hire/transfer and every two years thereafter
Job Responsibility
Job Responsibility
  • Define the technical vision, architecture, and roadmap for AI-native security incubation initiatives
  • align stakeholders across Security Copilot, Defender, Sentinel, Entra, Purview, Azure AI and other groups to deliver cohesive customer value, acting as a diplomat to negotiate priorities and trade-offs among partner teams
  • Lead 0→1 incubation R&D through MVP and private preview, then drive 1→N platformization and scale to General Availability (GA)
  • make principled trade-offs across quality, latency, reliability, cost, and safety when delivering solutions
  • Provide hands-on technical leadership – prototype in code, review designs and Pull Requests (PRs), define APIs/data contracts, build well-architected systems, and establish evaluation frameworks to de-risk complex AI systems
  • Set strategy for AI-first security experiences and platform components – determine where to use Large Language Models (LLMs) versus classical Machine Learning, design retrieval-augmented generation (RAG) pipelines, implement grounding and model routing/fallbacks, and establish safety guardrails to meet customer outcomes and Service Level Objectives (SLOs)
  • Ensure a security-centric and Responsible AI approach – design privacy and security guardrails from day one, coordinate security/privacy reviews, abuse prevention, compliance checks, and incident readiness as integral parts of the development process
  • Lead virtual teams (v-teams) and mentor others to cultivate a high-velocity, high-quality engineering culture
  • Engage directly with enterprise customers and field teams to co-design solutions and drive adoption, and communicate program status and strategy to executives through compelling, hands-on demonstrations
  • Fulltime
Read More
Arrow Right
New

Principal Software Engineer

Microsoft is at the forefront of a new era in productivity, and Microsoft 365 Co...
Location
Location
United States , Redmond
Salary
Salary:
139900.00 - 274800.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • 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
  • 2+ years experience designing and leading large-scale, distributed backend, data, or ML systems in production environments
  • Demonstrated ability to set technical direction, influence architecture, and mentor engineers to deliver scalable, maintainable, and high-quality systems
  • Experience driving cross-team engineering initiatives, balancing hands-on contributions with strategic technical leadership
  • 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.
Job Responsibility
Job Responsibility
  • Lead architectural design and discussions for core systems and platforms that improve the agility, performance, reliability, and efficiency of Copilot development
  • Drive identification of dependencies and development of technical design documents across products, applications, and services to ensure coherence and scalability of Copilot platform solutions
  • Define and implement quality strategies — mentoring others in test planning, validation, and success criteria to ensure resilient and high-quality software and service delivery
  • Establish and apply engineering metrics to drive quality, stability, and maintainability, while promoting best practices and reusable design patterns
  • Lead the creation and improvement of internal tools and frameworks that enhance developer velocity, automation, and overall system effectiveness
  • Collaborate closely with engineers, TPMs, and partner teams across product, infrastructure, and research to deliver enterprise-grade solutions adopted at scale across E+D and Microsoft
  • Embody our culture and values.
  • Fulltime
Read More
Arrow Right
New

Principal Software Engineer

Microsoft is at the forefront of a new era in productivity, and Microsoft 365 Co...
Location
Location
United States , Redmond
Salary
Salary:
163000.00 - 296400.00 USD / Year
https://www.microsoft.com/ Logo
Microsoft Corporation
Expiration Date
Until further notice
Flip Icon
Requirements
Requirements
  • Bachelor'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 equivalent experience
  • 6+ years experience designing and leading large-scale, distributed backend, data, or ML systems in production environments
  • Demonstrated ability to set technical direction, influence architecture, and mentor engineers to deliver scalable, maintainable, and scalable-quality systems
  • Experience driving cross-team engineering initiatives, balancing hands-on contributions with strategic technical leadership
  • 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.
Job Responsibility
Job Responsibility
  • Lead architectural design and discussions for core systems and platforms that improve the agility, performance, reliability, and efficiency of Copilot development
  • Drive identification of dependencies and development of technical design documents across products, applications, and services to ensure coherence and scalability of Copilot platform solutions
  • Define and implement quality strategies — mentoring others in test planning, validation, and success criteria to ensure resilient and scalable-quality software and service delivery
  • Establish and apply engineering metrics to drive quality, stability, and maintainability, while promoting established practices and reusable design patterns
  • Lead the creation and improvement of internal tools and frameworks that enhance developer velocity, automation, and overall system effectiveness
  • Collaborate closely with engineers, technical program managers, and partner teams across product, infrastructure, and research to deliver enterprise-grade solutions adopted at scale across E+D and Microsoft
  • Embody our culture and values.
  • Fulltime
Read More
Arrow Right
Jobs by Category
Art and Entertainment Jobs Banking Jobs Call Center Jobs Construction Jobs Consulting Jobs Customer Service Jobs Education Jobs Energy Jobs Finance Jobs Gastronomy Jobs Health and Beauty Jobs Hospitality and Tourism Jobs Human Resources Jobs Insurance Jobs IT - Administration Jobs IT - Software Development Jobs Legal Jobs Logistics Jobs Manufacturing Jobs Marketing, Digital Marketing, SEO, SEM Jobs Media Jobs Nursing Jobs Office Administration Jobs Pharmacy Jobs Physical Work Jobs Public Relations Jobs Public Sector Jobs Purchasing Jobs Quality Control Jobs Real Estate Jobs Research and Development Jobs Sales Jobs
Job Positions Jobs by Country
United States Jobs United Kingdom Jobs India Jobs Canada Jobs Australia Jobs Germany Jobs Ireland Jobs Poland Jobs
Company
Blog About Us Contact
Follow Us
Facebook
X (Twitter)
LinkedIn
Instagram
CrawlJobs Group
ITFlashcards AllDevBlogs
© 2026 CrawlJobs Ltd. All Rights Reserved
Terms & Conditions Privacy Policy