We are seeking a Senior Full Stack Developer with strong backend expertise to join our team in Washington, DC. This hybrid role requires onsite presence 1 to 2 days per week and is focused on API development that directly interfaces with complex SQL environments. The ideal candidate is highly skilled in .NET 6+, Angular (v15+), SQL, and TypeScript, and has experience working with microservices, Entity Framework, IAS, and Visual Studio. In this position, you will be responsible for building and maintaining robust APIs and web services that interact with large, structured SQL databases. Rather than focusing on front-end applications, this role emphasizes backend data access, processing, and API connectivity. You will collaborate closely with data and integration teams to ensure seamless, secure, and high-performance data transactions.