Top .NET Developer Jobs in Phoenix, AZ

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.

Onsite .NET developer to read, repair, and maintain existing applications and websites, support Visual FoxPro systems, perform data conversion, improve in-house processes, and conduct initial system discovery and analysis.

Develop and enhance time-critical Microsoft .NET web applications. Gather business requirements, design systems, implement features using C#, ASP.NET, MVC and jQuery; write MS SQL queries and stored procedures; perform testing, QA and documentation; collaborate across teams to deliver large, complex projects.

Convert a PowerBuilder 12 application to the .NET platform. Develop ASP.NET/C# web applications, perform T-SQL/SQL Server database programming, apply PowerBuilder expertise, and ensure strong web application security. Onsite contract role in Phoenix; background check required.

Develop, deploy, and maintain the ADOR Individual Income eFile system including schema updates, code changes, and migration documentation. Monitor application performance across dev/test/production to ensure correct file processing. Perform larger project initiatives and routine maintenance, managing multiple simultaneous tasks to meet commitments.

Develop, enhance, troubleshoot, test, and maintain web-based applications and scalable APIs (WCF/Web API SOAP/REST). Participate in design, code reviews, unit/system testing, and deliver features in an Agile/Scrum environment. Work onsite with minimal direction and support integration with SQL Server and front-end technologies.

Design, develop, implement and support web applications using .NET Core. Collaborate with internal bank teams and external vendors, troubleshoot production issues, and apply strong interpersonal, leadership, and problem-solving skills.

Design, develop, and maintain scalable ASP.NET/C# APIs and microservices and front-end interfaces (Vue.js, AngularJS) for retail omni-channel and POS platforms. Contribute to architecture, write production-quality code, troubleshoot issues, participate in code reviews, and collaborate with product, design, and QA to deliver features with minimal onboarding.

Lead technical direction for a major product domain, reduce architectural debt, mentor engineers, standardize AI-agent workflows, and design scalable backend solutions integrating LLMs and cloud services. Drive cross-team RFCs, cookbook standards, and adopt agentic AI tooling while balancing security, quality, and delivery.

Lead design and delivery of scalable, reliable software using C#/.NET, SQL Server, React, and Azure. Own complex initiatives from design through operations, mentor engineers, improve CI/CD, observability, and apply DDD/TDD/VSA practices. Use modern APIs, microservices or modular monoliths, and AI-assisted tooling to improve delivery.

Seeking a Senior Full Stack .NET Developer to work on a social good project, with strong skills in C#, AngularJS, design, and UX. Requires 5+ years of experience.

The Staff Engineer will leverage 5+ years of experience in C#, JavaScript, and frameworks to lead and innovate solutions in a collaborative environment.

Develop and maintain web applications for Technical Operations, utilizing a full stack including .NET and Angular within an Agile environment.

Design, develop, test, and maintain enterprise .NET full-stack applications using C#, Blazor, RESTful APIs, microservices, MongoDB/SQL Server and Kafka. Build CI/CD pipelines, participate in architecture and code reviews, troubleshoot production issues, mentor junior engineers, and evaluate/implement AI-assisted and LLM-enabled features while following secure development practices within Agile teams.

The role requires a .NET Developer with at least 2 years of experience in various Microsoft technologies and programming languages, capable of working in a team and managing client interactions.

As a Sr. Software Engineer at Bloomerang, you will lead technical direction, mentor engineers, and enhance SaaS solutions while utilizing .NET and AI tools. You will ensure scalable, maintainable applications, advocate for Agile workflows, and focus on quality outcomes in software development.

Lead design, development, and implementation of full-stack applications using .NET and Angular. Collaborate with teams to gather requirements, ensure security, scalability, and performance on Azure, manage SQL Server databases, use Git for version control, and mentor engineering teammates while adopting best practices and emerging technologies.

Lead development of maintainable .NET applications within a small team, apply test-driven development, coach client teams on modern software practices, and continuously improve technical skills.

Develop and maintain complex desktop UI applications using WPF and/or Silverlight. Lead GUI/UX design, implement .NET/C# application architecture, integrate with databases via ADO.Net/ODBC/Oracle SQL, and implement WCF services. Support reporting frameworks (Sharpshooter, Telerik, SSRS) and contribute to debugging and Visual Studio-based development.

Senior .NET full-stack developer responsible for custom application development, API integrations, database optimization, deployments, troubleshooting, performance, security, and production support using .NET/C#, ASP.NET Core, SQL, modern frontend frameworks, cloud, and CI/CD.

Contract remote .NET/Kentico web developer to build interactive, dynamic websites. Requires front-end web development experience and familiarity with the Kentico CMS. Six-week engagement.

Design, develop, test, and deploy .NET solutions (APIs and web apps). Build and consume RESTful services, work with SQL and NoSQL databases, use cloud (Azure/AWS) and Docker, apply unit/integration/performance testing, participate in code reviews, define features via spikes, and architect scalable, high-performance systems. Support occasional after-hours and on-call rotation.

Design, build, and maintain scalable web applications for payroll and accounting. Collaborate with engineers and product partners, write tested code, participate in code reviews, contribute to architecture, improve CI/CD and monitoring, support production (including on-call), and communicate progress while continuously learning.

The Integration Developer supports and maintains Rhapsody and .NET applications, automates workflows, and modernizes legacy systems for public health data exchange.