About Fidelio:

Fidelio is a leading dental insurance provider undergoing a major transformation—replacing legacy systems with scalable, secure, and modern software solutions. We operate in a dynamic, fast-paced environment where innovation, adaptability, and problem-solving are key. Our team is actively building the infrastructure and processes that will support our next stage of growth. If you’re someone who thrives in a hands-on, evolving development space, Fidelio is the place for you.

Position Summary:

We’re looking for a Full Stack Application Developer with at least 5 years of experience in C#, Razor Pages, .NET, and SQL to join our growing development team. You’ll be responsible for building new functionality, maintaining existing applications, and helping drive our ongoing modernization efforts. This is a highly collaborative, roll-up-your-sleeves kind of role with real business impact.

Key Responsibilities:

• Develop and maintain scalable applications using C#, ASP.NET Core (Razor Pages), and SQL Server
• Lead and support the transition from legacy systems to modern .NET-based platforms
• Troubleshoot and resolve software bugs, system issues, and data integrity problems
• Translate business requirements into efficient, maintainable code
• Design intuitive front-end components and secure, high-performance back-end logic
• Participate in architectural planning, code reviews, and system testing
• Maintain internal websites for data accuracy, security, and compliance
• Document features and functionality, and support internal training when needed

Required Skills & Qualifications:

• Minimum 5 years of professional experience in full stack application development
• Strong expertise in C#, .NET Framework/Core, and Razor Pages
• Solid knowledge of SQL and relational database design
• Front-end development experience (HTML, CSS, JavaScript within .NET stack)
• Excellent problem-solving skills and attention to detail
• Comfortable working in a fast-paced environment where processes are being developed in real time, and able to pivot quickly between tasks and priorities as needed
• Experience using Team Foundation Server (TFS) for version control and work item tracking

Preferred Qualifications:

• Experience modernizing or migrating legacy systems
• Familiarity with healthcare or insurance systems
• Exposure to reporting tools, especially Power BI and Fast Reports
• Knowledge of secure coding best practices and system performance tuning

Job Types: Full-time, Part-time

Pay: $80,000.00 - $150,000.00 per year

Expected hours: 25 – 40 per week

Benefits:

• Dental insurance
• Flexible schedule
• Health insurance
• Paid time off

Work Location: In person