Top Senior .NET Developer Jobs in Phoenix, AZ

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.

Design, build, and maintain production-grade .NET web applications and APIs on Azure. Own full-stack delivery from data models and SQL to front-end components, CI/CD, testing, and architecture. Collaborate with product and delivery teams, participate in code reviews, and ensure secure, observable, well-tested services.

The role involves full-stack software development, adhering to Agile practices, and collaborating across teams. Responsibilities include coding, testing, and maintaining software systems while mentoring team members.

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.

Develop, enhance, troubleshoot, test, and maintain web-based .NET applications. Implement new features, debug defects, participate in code reviews, perform unit and system testing, and deliver functionality in an Agile/Scrum environment while collaborating with team members and stakeholders.

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 senior .NET developer to design, write, test, debug, and modify applications. Work with teams to move code through development, test, and production environments and troubleshoot issues.

Design and implement complex reports; import/export and transform Oracle data; write queries, stored procedures, and T-SQL; develop .NET 4.5/C# applications and Oracle Forms 10g; perform unit testing and code reviews; create technical documentation; work within Agile/SDLC teams.

Design, develop, modify, test and debug ASP.NET/VB.NET web applications. Build and maintain ETL and reporting solutions using SSIS and SSRS. Work with IBM MQ integrations, troubleshoot issues, and promote code through development, test, and production environments.

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.

Senior .NET developer responsible for designing, coding, testing, debugging, and maintaining web-based applications. Lead technical direction, manage releases with TFS, mentor developers, participate in code reviews, collaborate with architects/analysts and QA, and deliver features in an Agile/Scrum environment. Troubleshoot complex defects, implement WebAPIs and integrate with APIs/Azure, and build business intelligence solutions.

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 implement complex reports, import/export and transform Oracle data, write queries/stored procedures, and develop .NET 4.5 C# applications (85%) with Oracle Forms 10g support (15%). Perform unit testing, code reviews, create design/technical documentation, and work within Agile/SDLC teams using Visual Studio and TFS.

Design and implement complex reports; import/export and transform Oracle data; write queries, stored procedures, and T-SQL; develop .NET/C# applications using MVC, Web Forms, Entity Framework, WCF; use Visual Studio/TFS; perform unit testing and formal code reviews; produce design and technical documentation within Agile/SDLC teams.

Onsite .NET developer responsible for full lifecycle development, debugging, testing, and implementation of web-based applications. Work includes feature design, SQL development/optimization, WebAPI/API integration, Azure and web services, participating in code reviews, unit/system testing, and delivering solutions within a Scrum/agile environment. Requires strong communication and collaboration with business users and team members.

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.

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.

Onsite contract .NET Web Developer responsible for development and maintenance of .NET applications (80%), ESB and TFS support. Work with Visual Studio, ASP.NET, C#, MVC, WCF, SOAP/REST APIs, jQuery, IIS, JavaScript/HTML/CSS, SQL Server, SSRS, and NUnit within Agile teams. Must have Windows Server and Team Foundation Server experience; basic familiarity with Microsoft Test Manager and Coded UI.

Onsite .NET developer responsible for full lifecycle development, testing, debugging, and maintenance of web applications and scalable APIs (WCF/Web API). Work with SQL Server/T-SQL, frontend technologies, Azure, participate in code reviews, and support Agile/Scrum delivery.

Develop, enhance, troubleshoot and maintain web-based applications through full SDLC. Design, code, test, debug, and implement features; perform unit and system testing; participate in code reviews; work in a modified Scrum environment; integrate with SQL Server, APIs, Azure, and front-end technologies; support production and BI solutions.

Design, write, modify, test, troubleshoot and debug .NET applications; move code through dev/test/production environments; work onsite in Phoenix as part of a contract-to-hire engagement.

Onsite contract-to-hire .NET Developer in Phoenix responsible for reviewing requirements, designing and writing new or modified code, testing and debugging, and promoting code through development, test, and production environments. Requires local candidates and background check clearance before starting.

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%).