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We are looking for a resilient, detail-oriented Full Stack Developer to join our Technical Support Engineering team. This role focuses on actively developing, supporting, and evolving a mission-critical ASP.NET WebForms platform. You will work hands-on in a large legacy codebase, delivering bug fixes, performance improvements, and new features—while helping document and guide its future modernization.
This is a high-impact role for someone who enjoys deep technical problem-solving and taking ownership of complex systems.
**What You’ll Do**
* Develop, maintain, and support a large-scale ASP.NET WebForms application
* Troubleshoot and resolve complex production issues using logs, debugging, and root-cause analysis
* Write and optimize advanced SQL queries, stored procedures, and views
* Build and maintain simple .NET APIs and background jobs
* Collaborate with QA and Customer Success to reproduce issues and explain technical causes
* Document legacy logic and contribute to ongoing system improvements
**Required**
**What You Bring**
* 3+ years of hands-on experience developing with ASP.NET WebForms
* 4+ years of experience with C#/VB.NET and .NET Framework (4.8+) or .NET 8
* 4+ years of advanced SQL development, including performance tuning and production support
* Strong front-end fundamentals: HTML, CSS, JavaScript, jQuery
* Experience with Hangfire, background processing, and email templating
* Strong troubleshooting skills and a patient, methodical problem-solving approach
* Ability to clearly explain technical issues to non-technical stakeholders
* A mindset oriented toward quality, maintainability, and gradual modernization
**Nice to Have**
* React or Next.js experience
* Azure DevOps and CI/CD pipelines
* Cloud exposure (especially Azure)