Senior Full-Stack Engineer - C#, .NET, Azure, API Architect

Sean Tracy

Senior Full Stack Developer

****************@*****.*** +1-747-***-**** North hills, CA 91343 SUMMARY

Senior Full-Stack Software Engineer with 10+ years of experience architecting, developing, and optimizing enterprise-grade applications using C#, .NET, ASP.NET MVC, Web API, and modern JavaScript frameworks. Specializes in building scalable APIs, distributed services, and cloud-ready systems leveraging Azure App Service, Azure SQL, Storage solutions, WebJobs, and DevOps pipelines. Strong background in Vue.js, JavaScript, HTML5, CSS3/SASS/SCSS, Bootstrap, Entity Framework, and T-SQL. Known for delivering clean, maintainable code, improving system reliability, and leading successful integrations across complex platforms and enterprise environments. Recognized for solving tough technical challenges, modernizing legacy systems, and creating dependable solutions that teams rely on.

PROFESSIONAL EXPERIENCE

Senior Software Engineer

Stova, formerly Eventcore

2021 – Present Remote

•Designed and developed backend services using C#, .NET Core, SQL Server, Azure App Services, improving overall system reliability and performance.

•Modernized legacy monolithic components into modular, service-oriented architectures, enabling faster deployments and clearer code ownership across teams.

•Strengthened engineering quality through automated testing frameworks, code-quality gates, and CI/CD improvements—reducing release issues by 65%.

•Collaborated with product, QA, DevOps, and UX teams to refine requirements and deliver scalable features used by large global event customers.

•Mentored mid-level and junior engineers on architecture, debugging strategies, and maintainable API design.

Software Engineer

55zero Management

2017 – 2021 Seattle, WA

•Built enterprise applications with ASP.NET MVC, Web API, Entity Framework, SQL Server, and JavaScript ecosystems.

•Improved backend performance through SQL tuning, caching enhancements, and refactoring, reducing request latency and improving platform responsiveness.

•Enhanced developer workflows using cleaner Git branching, documentation, and automated builds— reducing manual engineering effort by 40%.

•Integrated external APIs for reporting, authentication, and property-management operations.

•Partnered closely with UI, QA, and business teams to ensure stable, well-tested releases. Software Engineer

UnitedHealth Group

2015 – 2017 Seattle, WA

•Built HIPAA-compliant healthcare APIs and patient-data workflows using C#, .NET Core, Web API, Entity Framework, and Azure Functions, increasing data-processing efficiency by 35%.

•Implemented automated CI/CD pipelines with Azure DevOps, reducing manual QA effort by 40% and improving deployment reliability.

•Optimized backend services with Azure Service Bus and SQL Server, decreasing server load by 22% and improving workflow speed for clinical applications. Junior Software Engineer

IBM

2012 – 2014 Austin, Tx

Developed internal enterprise tools using ASP.NET, C#, ADO.NET, and SQL Server. • Strengthened application reliability with improved validation, logging, and exception-handling layers. Built unit tests and automation utilities that reduced manual QA time by 25%. Learned core enterprise engineering practices, including API integrations, modular architecture, and high-availability systems.

.NET Developer

VML

2011 – 2012 Seattle, WA

•Developed .NET applications and backend services using C#, ASP.NET, and SQL Server.

•Supported feature development, bug resolution, and integration efforts within enterprise system environments.

•Delivered maintainable code aligned with engineering standards and project requirements. EDUCATION

Certificate of Achievement, Programming for Web

Development

Bellevue College

2010 – 2011 Bellevue, WA

Bachelor of Science, Industrial Technology

Western Washington University

2002 – 2007 Bellingham, WA

SKILLS

Backend

C#, .NET Framework/.NET Core, ASP.NET MVC, ASP.NET Web API, WCF, ADO.NET, Entity Framework, LINQ, Autofac, IoC, Windows Services, Web Services (REST/SOAP), JSON, XML, OData, Regular Expressions, Test Automation, Unit Testing, Continuous Integration, Full-Stack Development, MS Office Add-ins, nopCommerce, LINQPad

Frontend

JavaScript, Vue.js, jQuery, AJAX, HTML5, CSS/CSS3, SASS/SCSS, Bootstrap, Responsive Design, UI/UX, Web Development

Cloud/DevOps

Microsoft Azure, Azure SQL Database, Azure App Service, Azure Queue/Table/Blob Storage, Azure AD B2C, Azure WebJobs, TeamCity, Git, Bitbucket, Subversion, JIRA Database

Microsoft SQL Server, SQL Azure, T-SQL, Stored Procedures, Database Design, Data Caching

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