Application Developer (.NET Modernization)

We're seeking an experienced Application Developer to modernize a legacy VB.NET application into a scalable, secure, and maintainable C#/.NET solution supporting a mission-critical public safety environment.

This is not a simple code conversion project. The ideal candidate can analyze legacy applications, identify critical business logic versus technical debt, and design modern solutions using current .NET best practices. Responsibilities

• Analyze and document an existing VB.NET application, including architecture, dependencies, and business rules
• Design and recommend a modern C#/.NET solution
• Modernize legacy functionality while preserving critical business requirements
• Create technical documentation, migration plans, and risk assessments
• Collaborate with stakeholders to validate requirements and define scope
• Support modernization efforts in a secure, highly regulated environment

• Strong experience with C#, .NET, and ASP.NET
• Ability to troubleshoot and maintain VB.NET/.NET Framework applications
• Experience modernizing or replacing legacy enterprise applications
• Hands-on experience with:

• HTML5, jQuery
• SSRS and SSIS
• APIs and system integrations
• RabbitMQ

• Knowledge of modern development practices, including:

• ASP.NET Core
• Dependency Injection
• Unit Testing
• CI/CD
• Async Programming, * Experience in public safety, government, law enforcement, healthcare, finance, or other regulated industries

• Familiarity with CAD systems, CentralSquare Technologies, or similar platforms
• Experience working with sensitive data, security controls, and change management processes

Ideal Candidate

• You have successfully modernized legacy applications, can reverse-engineer complex systems, communicate effectively with both technical and business stakeholders, and understand how to balance innovation with operational stability in mission-critical environments.

Everforth Apex is a world-class IT services company that serves thousands of clients across the globe. When you join Everforth Apex, you become part of a team that values innovation, collaboration, and continuous learning. We offer quality career resources, training, certifications, development opportunities, and a comprehensive benefits package. Our commitment to excellence is reflected in many awards, including ClearlyRateds Best of Staffing in Talent Satisfaction in the United States and Great Place to Work in the United Kingdom and Mexico. Everforth Apex uses a virtual recruiter as part of the application process. Click for more details. By applying for this job, you agree to receive calls, AI-generated calls, text messages, or emails from Everforth Apex and its affiliates, and contracted partners. Frequency varies for text messages. Message and data rates may apply. Carriers are not liable for delayed or undelivered messages. You can reply STOP to cancel and HELP for help. You can access our privacy policy at