Senior Full Stack Engineer

The Philadelphia office of Cozen O’Connor is seeking a skilled Full Stack Engineer with expertise across .NET development and the Microsoft AI ecosystem. This role combines traditional .NET application development with the design and deployment of intelligent agents using Microsoft Copilot Studio and Azure AI services.

You will build and maintain full-stack .NET applications, develop Copilot Studio agents integrated with SharePoint Online and Microsoft 365, and contribute to Azure OpenAI-powered workflows that serve the firm’s legal professionals. The position sits within the Development Operations team and spans both the core application portfolio and an emerging AI services layer.

This job is hybrid and you must reside in the Philadelphia regional area.

·  Design, build, and maintain full-stack .NET applications (C#, ASP.NET, Blazor) connected to SQL Server, SharePoint Online, and internal APIs.

·  Develop and deploy agents in Microsoft Copilot Studio, integrating with SharePoint Online, Microsoft Graph, and internal data sources.

·  Analyze, document, and maintain SSIS packages, SSRS reports, and SQL Server stored procedures critical to daily operations.

·  Ensure stable operation of existing .NET codebases and data processes, diagnosing and resolving production issues promptly.

·  Integrate SharePoint Online content into both traditional applications and AI solutions, including crawls, metadata tagging, and permission handling.

·  Work with the Data Team on T-SQL performance tuning, stored procedures, and data integrations to maintain system efficiency.

·  Collaborate with attorneys and business stakeholders to clarify requirements and deliver solutions that meet functional and non-functional needs.

·  Contribute to CI/CD pipelines, code reviews, and internal documentation and deployment standards.

·  Track and manage technical debt, proposing plans that balance risk and business value.

• 7+ years of professional experience in .NET development

• Bachelor’s degree in Computer Science or a related field

• Hands-on experience building agents or workflows in Microsoft Copilot Studio

• Demonstrated experience integrating SharePoint Online and Microsoft Graph

• Proficiency in T-SQL and SQL Server, including stored procedures and SSIS

• Strong written and verbal communication skills, attention to detail, able to explain technical topics to non-technical stakeholders

• Excellent analytical and problem solving abilities

• Creative and critical thinker with strong interpersonal skills

• Must be able to learn, understand, and apply new technologies

• Hybrid schedule, onsite in our Philadelphia headquarters 2 days per week

• Preferred: experience with Semantic Kernel, Azure AI Foundry

• Preferred certifications: AZ-204 (Azure Developer), AI-102 (Azure AI Engineer), or PL-400 (Power Platform Developer)

Competencies

•           Software Development (C#, .NET, Full Stack)

•           Microsoft Copilot Studio / Agent Development

•           SharePoint Online / Microsoft Graph / Microsoft 365

•           Azure AI Services (Azure OpenAI, Azure AI Search, Semantic Kernel)

•           T-SQL / SSIS / SSRS / SQL Server

•           API Development, Web-Based Applications (Blazor, Razor)

•           Version Control (Git), Azure DevOps, CI/CD

•           Automation & Scripting (PowerShell)

•           Agile, Scrum, Kanban

The salary range for this role is $100,000 - $150,000 and represents the Firm’s good faith and reasonable estimate of the range of possible compensation at the time of posting. Actual compensation will be dependent upon a number of factors, including but not limited to, the candidate’s relevant experience, qualifications and location.