Microsoft 365 Principal Engineer

About this role:
Wells Fargo is seeking a Principal Engineer to provide deep technical leadership for AI capabilities across Microsoft 365 and OS platforms, with a focus on the design and delivery of agentic AI solutions and workflows built on Microsoft 365 Copilot, Copilot Studio, and Copilot Cowork. As the most senior individual contributor on the team, you will define how agents, skills, and plug-ins are built, secured, and scaled across the enterprise - turning the Copilot platform into intelligent, autonomous experiences for the workforce.
In this role, you will:

• Act as the principal technical authority for agentic AI across Microsoft 365 (Teams, Outlook, SharePoint, Graph, Copilot) and OS platforms (Windows, macOS, iOS, Android), defining architecture and engineering standards for agents, skills, plug-ins, and AI-driven workflows
• Design and build end-to-end agentic solutions on the Microsoft 365 Copilot platform - declarative and custom agents, skills composition, plug-in/tool calling, grounding over enterprise data via Microsoft Graph, and multi-step autonomous workflows
• Lead delivery of agents and automations in Copilot Studio and Copilot Cowork, establishing reusable patterns, skills libraries, and plug-in frameworks that other teams build on
• Define how Copilot Cowork agents are extended with custom skills and plug-ins to automate complex, cross-application workplace workflows securely and reliably
• Drive the most complex, highest-risk technical initiatives across teams, resolving ambiguous architecture and integration challenges spanning the Copilot platform, Microsoft Graph, and OS extensibility points
• Set and enforce engineering best practices for agentic AI delivery - agent and skill evaluation, prompt and skill versioning, observability, latency and cost optimization, CI/CD, and automated testing for non-deterministic AI systems
• Embed responsible AI into the engineering foundation: grounding, safety, guardrails, data privacy, model governance, and explainability built into agents, skills, and plug-ins by design
• Partner with architects and engineering leadership to shape the next generation domain architecture and target-state roadmap for the Microsoft 365 Copilot ecosystem and OS platform AI
• Conduct deep technical design reviews and peer code reviews, evaluating solution quality and alignment to technical direction, and personally contribute hands-on in the codebase to the most critical components
• Serve as the technical representative for the product in cross-team planning and collaborative efforts, influencing technology requirements, priorities, and the engineering roadmap
• Identify and drive escalated resolution of the most difficult technology roadblocks across code, build, deployment, and platform integration
• Mentor and grow senior and experienced engineers, raising the team's depth in Microsoft 365 Copilot extensibility, Copilot Studio, Cowork, and OS platform engineering
• Interact directly with Microsoft and other technology partners to advance Copilot platform and AI capabilities
• Interpret, develop, and ensure the security, stability, and scalability of AI capabilities, and identify, manage, and mitigate AI-related technology and enterprise risk
• Provide principal-level technical leadership for the design and delivery of agentic AI solutions, skills, and plug-ins on Microsoft 365 Copilot, Copilot Studio, and Cowork
• Set the engineering standards, patterns, and reusable frameworks that enable teams to build secure, scalable agents and plug-ins across the Copilot platform
• Personally drive resolution of the hardest technical problems and remain hands-on in the codebase for the most critical work
• Embed responsible AI, evaluation, observability, and governance into the engineering foundation and definition of done
• Influence architecture, roadmap, and technology strategy across teams and partner with leadership on target-state direction for the Microsoft 365 Copilot ecosystem
• Mentor and elevate the technical depth of the engineering organization in Copilot extensibility, agentic AI, and platform engineering

Required Qualifications:

• 7+ years of Engineering experience, or equivalent demonstrated through one or a combination of the following: work experience, training, military experience, education

Desired Qualifications:

• Demonstrated experience designing and delivering generative AI or agentic AI systems in production at enterprise scale - agents, skills, plug-ins, tool calling, orchestration, and autonomous or human-in-the-loop workflows
• Deep, hands-on expertise with the Microsoft 365 Copilot extensibility model - declarative and custom engine agents, skills, plug-ins, message extensions, and Microsoft Graph connectors
• Hands-on experience building and shipping agents and automations in Copilot Studio and Copilot Cowork, including custom skills and plug-in development
• Strong experience building AI-powered capabilities across OS platforms (Windows, macOS, iOS, Android) in a large enterprise environment
• Expertise grounding agents over enterprise data through Microsoft Graph, including retrieval, security trimming, and data governance
• Proficiency with engineering fundamentals that underpin agentic AI delivery: API and microservices design, containerization (Docker, Kubernetes), CI/CD, DevSecOps, and automated testing/evaluation for non-deterministic systems
• Demonstrated application of responsible AI principles - model governance, grounding, safety, bias mitigation, data privacy, and explainability - in a regulated industry
• Experience as the senior-most technical leader on complex initiatives, influencing architecture and engineering direction across multiple teams without direct authority
• Experience delivering AI capabilities in a regulated financial services or other highly regulated environment, with awareness of enterprise risk, security, and compliance frameworks for AI

Posting End Date:
18 Jun 2026
*Job posting may come down early due to volume of applicants.
We Value Equal Opportunity
Wells Fargo is an equal opportunity employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, sexual orientation, gender identity, national origin, disability, status as a protected veteran, or any other legally protected characteristic.
Employees support our focus on building strong customer relationships balanced with a strong risk mitigating and compliance-driven culture which firmly establishes those disciplines as critical to the success of our customers and company. They are accountable for execution of all applicable risk programs (Credit, Market, Financial Crimes, Operational, Regulatory Compliance), which includes effectively following and adhering to applicable Wells Fargo policies and procedures, appropriately fulfilling risk and compliance obligations, timely and effective escalation and remediation of issues, and making sound risk decisions. There is emphasis on proactive monitoring, governance, risk identification and escalation, as well as making sound risk decisions commensurate with the business unit's risk appetite and all risk and compliance program requirements.
Candidates applying to job openings posted in Canada: Applications for employment are encouraged from all qualified candidates, including women, persons with disabilities, aboriginal peoples and visible minorities. Accommodation for applicants with disabilities is available upon request in connection with the recruitment process.
Applicants with Disabilities
To request a medical accommodation during the application or interview process, visit Disability Inclusion at Wells Fargo .
Drug and Alcohol Policy
Wells Fargo maintains a drug free workplace. Please see our Drug and Alcohol Policy to learn more.
Wells Fargo Recruitment and Hiring Requirements:
a. Third-Party recordings are prohibited unless authorized by Wells Fargo.
b. Wells Fargo requires you to directly represent your own experiences during the recruiting and hiring process.
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