Design, develop, and maintain scalable, multitenant SaaS applications using .NET 6+ and microservices. Support, maintain, and modernize legacy .NET Framework 4.7.2 monolithic applications. Build high-performance, secure, and well-documented RESTful APIs and integrations. Apply industry-standard architecture patterns, best practices, and clean code principles. Collaborate with the Technical Lead and Architect on architectural direction. Work in a fully remote, cross-functional Agile team. Write and maintain unit tests. Own the end-to-end delivery of significant features or projects. Troubleshoot, debug, and optimize application performance. Participate in Agile ceremonies and act as a technical lead when needed. Mentor and coach less senior engineers. Contribute to continuous improvement of development processes.