Top .NET Developer Jobs in Phoenix, AZ

Lead design, development, and maintenance of scalable .NET web and Windows applications. Build RESTful APIs, integrate front-end frameworks, collaborate with cross-functional teams, drive architectural decisions, perform code reviews and testing, and support deployments and backlog reduction for the eApp portfolio.

Lead and mentor an engineering team building GovIntel and GovChannel product capabilities. Own technical direction, design and deliver scalable SaaS features, APIs, integrations, and platform reliability. Partner with Product, QA, Cloud Ops, and stakeholders to prioritize work, drive CI/CD and observability practices, lead reviews and incident response, and apply AI-assisted tools to improve development speed and quality.

Designs, develops, modernizes, and maintains enterprise .NET applications and integrations. Provides technical leadership, mentors staff, leads deployments and migrations, ensures security and performance, supports production, and collaborates with stakeholders across development, security, and infrastructure teams.

As a Software Engineer, you will design, develop, and deliver high-quality software, contribute to code reviews, monitor application performance, and ensure maintainability and consistency across products.

Senior-level engineer responsible for complex platform design, coding, testing, performance tuning, and leading development efforts. Acts as technical escalation point, mentors developers, and delivers enterprise .NET/SQL solutions in an Agile/SCRUM environment.

Senior full-stack developer responsible for designing, developing, and maintaining .NET/Angular web applications. Tasks include adding features, bug fixes, performance tuning, troubleshooting complex issues, mentoring junior developers, supporting deployments, and ensuring security/compliance. Works in Agile teams, collaborates with architects, and may provide 24x7 production support.

Design, analyze, modify and develop .NET (3.0–4.5) applications using C#. Develop and optimize complex T-SQL and Oracle PL/SQL queries. Implement WCF and MVC components. Perform unit testing, documentation, code reviews, and use TFS for source control.

Develop, maintain, and optimize enterprise .NET applications for motor vehicle systems. Write compliant C#/ASP.NET code, troubleshoot defects, contribute to technical design and specifications, support multi-version deployments, and collaborate with business and technical stakeholders.

Onsite senior .NET developer responsible for developing, maintaining, and administering MS SQL Server databases, building/debugging custom screens and queries, and developing reports with Crystal Reports. Work includes web programming (HTML, ASP, JavaScript), website setup/management, database utilities (backup/restore/reorg), troubleshooting, and supporting regulatory licensing/compliance processes. Acts as the department Database Administrator and must clear background check and be authorized to work in the U.S.

Onsite senior .NET developer responsible for full life-cycle application development (60%), fixing and improving existing applications (30%), and miscellaneous tasks (10%). Work uses .NET frameworks, C#, ASP.NET, JavaScript/jQuery, MVC/Webforms, and Oracle databases.

Design and develop web-based UIs, middle-tier components, data access layers and T-SQL. Apply OOP principles, work independently, collaborate with BAs and QA, and use TFS for source control.

Design, develop, test, enhance, and maintain user-facing web applications. Collaborate on UI/UX implementations, propose modern tools, troubleshoot defects, and document code. Coordinate multiple projects and ensure high-quality, maintainable solutions.

Develop and maintain .NET multi-tier applications, provide application and database support, analyze and resolve issues, design relational databases, create technical design specifications, and collaborate with teams to implement solutions.

Develop, analyze, modify, and create .NET (3.0–4.5) applications using C#. Build and maintain Web Forms and MVC apps, Entity Framework data access, WCF services, and advanced T-SQL queries. Use TFS for source control, produce technical documentation, perform unit testing and code reviews, and work within Agile/SDLC teams.

Onsite contract role in Phoenix for a Senior .NET Developer to perform full life-cycle application development, maintain and fix existing applications, and handle other assigned tasks. Requires strong C#, ASP.NET, JavaScript/jQuery, Oracle and SQL Server experience and familiarity with legacy Windows environments.

Provide business and systems analysis and develop/program web-based applications using .NET technologies (C#, VB.NET, ASP.NET, Visual Studio or Java). Work with source control/TFS, adhere to background check requirements, and perform related programming tasks across various environments.

Develop and maintain web UI and backend components using C#, ASP.NET MVC4, WCF, .NET 4.5, JavaScript/jQuery, and SQL Server. Deploy and support applications on IIS/Windows Server, using Visual Studio and TFS for source control.

Senior .NET developer responsible for full lifecycle development, debugging, testing, and support of web-based applications. Design, implement, and optimize features using C#, .NET, SQL Server, and front-end technologies. Participate in code reviews, unit/system testing, and Agile/Scrum delivery. Work onsite with minimal direction and collaborate with stakeholders to resolve complex issues.

Design, develop, test, debug, and maintain web-based .NET applications. Implement new features, participate in code reviews, perform unit and system testing, troubleshoot defects, work in a Scrum environment, and collaborate with stakeholders to deliver timely solutions.

Onsite contract .NET Developer in Phoenix responsible for analyzing and developing .NET (3.0-4.5) C# applications and T-SQL/SQL Server code (85%), plus unit testing, documentation, and formal code reviews (15%).

Designs and develops web and desktop applications using VB.NET. Manages full application lifecycle, authors documentation, leads coding efforts, collaborates with business and peers, and ensures timely, high-quality deliveries.

Onsite senior .NET developer responsible primarily for migrating/converting Classic ASP and older .NET apps to .NET Framework 4.5/IIS 8.5, diagnosing application and database issues, and monitoring/managing application servers for reliable operation.

Design and implement complex reports; import/export, manipulate and reformat Oracle/SQL data; write queries, stored procedures and T-SQL; use data modeling and relational DB concepts. Develop .NET solutions in C# using XML, MVC, Web Forms, Entity Framework, MS Enterprise Libraries and WCF. Perform unit testing, code reviews, produce technical documentation, and work within Agile/SDLC teams using Visual Studio and TFS.

Onsite senior .NET developer responsible for developing, testing, and troubleshooting internet applications using .NET Framework 4.0, MVC, and WCF. Work extensively with SQL Server 2008 and Windows environments; use TFS for source control. Must pass background check.

Provide business and systems analysis and develop applications (primarily Windows apps) using the Microsoft .NET stack. Work with C#, VB.NET, ASP.NET/Visual Studio, source control/TFS, and perform required programming, testing, and related duties while supporting project needs onsite in Phoenix.