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Shannon Weir

@shannonweir

I build secure cloud-hosted .NET applications, microservices, and enterprise web experiences.

United States
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At ADP, I build enterprise payroll and HR microservices and responsive self-service web experiences using C#, .NET Core, ASP.NET Web API, Angular, React, and SQL Server.

I design secure distributed systems across Azure and AWS, implementing OAuth2, OpenID Connect, JWT, Azure AD, Okta, RBAC, and audit logging for payroll, benefits, and other enterprise applications. I also tune SQL Server procedures, views, indexes, and query plans to support reliable high-volume processing.

I've led CI/CD automation with Azure DevOps, Git, GitHub Actions, Docker, Kubernetes, and automated testing, reducing deployment failures by 30% at ADP. Through code reviews, pair programming, and architecture sessions, I mentor junior engineers and help teams improve reliability and defect detection.

My work also includes full-stack enterprise delivery at TEKsystems and mission-critical defense, intelligence, aerospace, command-and-control systems at Peraton and Northrop Grumman. I bring more than six years of experience building secure, scalable .NET services, APIs, and operational web applications in Agile/Scrum teams.

Experience

Work history, roles, and key accomplishments

ADP logoAD
Current

Software Engineer

Sep 2022 - Present (4 years)

Designed and implemented enterprise payroll and HR microservices using C#, .NET Core, and ASP.NET Web API, integrating with SQL Server and message-based workflows. Built secure web experiences with Angular and React, and engineered authentication flows using OAuth2, OpenID Connect, and Azure AD.

Northrop Grumman logoNG

Software Development Intern

Sep 2015 - Aug 2017 (1 year 11 months)

Assisted in developing internal .NET tools and web utilities using C#, ASP.NET, and JavaScript. Implemented and tested SQL Server tables and stored procedures, and participated in Agile Scrum ceremonies.

Education

Degrees, certifications, and relevant coursework

Rochester Institute of Technology logoRT

Rochester Institute of Technology

Bachelor of Science, Computer Science

2013 - 2017

Bachelor of Science in Computer Science from Rochester Institute of Technology, completed in December 2017.

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