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# Senior .NET Developer

- **Company:** NTT DATA, Inc.
- **Location:** Seattle, WA, United States
- **Experience:** Expert
- **Contract:** Permanent contract
- **Skills:** Qunit, ASP.NET, .NET Framework, Unit Testing, C Sharp (Programming Language), Code Coverage, Software Quality, Software Design Patterns, JQuery, Microsoft Visual Studio, System Center Configuration Manager, Team Foundation Server, Model View Controller (MVC), Nunit, Octopus Deploy, Standard Sql, Software Systems, Web Application Frameworks, Web Services, Gitlab, Xunit, Specflow, Redgate, Teamcity, Splunk, Mocha, Jasmine
- **Published:** August 9, 2026
- **Apply:** https://us.experteer.com/career/view-jobs/senior-net-developer-seattle-wa-usa-58874612

## About the Role

high problem resolution without assistance * Mentor junior developers and promote best practices Tasks * 5-7 years of experience with Microsoft .NET tech stack * Development and maintenance of .NET-based applications and websites * Experience in ASP.NET, MVC 3 or higher, JQuery, C#, ASP.NET Web Services * Strong SQL Server knowledge * Familiarity with design patterns and web frameworks * Excellent written and communication skills * Nice-to-have: experience in financial services * Desirable tools: Splunk, TFS/SCCM, Visual Studio, GitLab, TeamCity, RedGate, Octopus Deploy, OpenDeploy, NUnit, XUnit, SpecFlow/Mspec, Mocha, Jasmine, QUnit Key requirements * full comprehensive benefits package starting from day one

## Description

Experteer Overview In this role you will design, develop and maintain .NET-based applications, translating business needs into technical solutions. You will work closely with users, IT, vendors and customers to define requirements, ensure code quality and test coverage, and mentor junior developers. You will contribute to improving the existing codebase and resolve complex technical issues. This position offers the chance to impact financial services-related projects within a collaborative team. Compensation / Benefits * Design, develop and maintain .NET applications based on requirements * Analyze business needs and define software solutions * Resolve customer issues with software and propose enhancements * Collaborate with business users, IT, vendors and customers to define requirements * Ensure high code quality and thorough unit testing * Translate requirements into technical specifications and implement them * Contribute to improving codebase design and quality * Provide technical problem resolution without assistance * Mentor junior developers and promote best practices Tasks * 5-7 years of experience with Microsoft .NET tech stack * Development and maintenance of .NET-based applications and websites * Experience in ASP.NET, MVC 3 or higher, JQuery, C#, ASP.NET Web Services * Strong SQL Server knowledge * Familiarity with design patterns and web frameworks * Excellent written and communication skills * Nice-to-have: experience in financial services * Desirable tools: Splunk, TFS/SCCM, Visual Studio, GitLab, TeamCity, RedGate, Octopus Deploy, OpenDeploy, NUnit, XUnit, SpecFlow/Mspec, Mocha, Jasmine, QUnit Key requirements * full comprehensive benefits package starting from day one


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