Birchwell Associates is seeking a Senior Full Stack Web Developer with strong SQL Server administration skills to join an innovative IoT development team. This role offers a mix of working on cutting-edge web technologies and revitalizing legacy systems, ensuring a dynamic and diverse tech environment. Key Responsibilities: Develop and maintain modern, multi-tenant web applications. Optimize SQL databases, writing stored procedures and ensuring performance, indexing, and security. Build scalable backend services and APIs using .NET Core and C#. Create user-friendly front-end experiences with React, Angular, or Vue.js. Debug, troubleshoot, and improve system efficiency. Collaborate with team members, clients, and management to gather requirements and deliver high-quality solutions. Ensure best practices in security, authentication, and authorization. Required Skills & Experience (Minimum 4 Years): Backend: C# .NET, ASP.NET MVC, Entity Framework, .NET Core. Frontend: HTML, CSS, JavaScript, jQuery, React/Angular/Vue.js. Database: SQL Server, query optimization, performance tuning, execution plans, failover procedures. Legacy Tech: ASP.NET Webforms, .NET Framework 4.x, Microsoft RDLC reports, ODBC. Networking: TCP/IP protocols, async/await patterns, threading, resource management. Desirable Skills (Bonus Points For): Git, TFS, API development. Single-Sign-On (SSO), JWT, cryptography. Windows Server, SSL certificates, load balancing, PowerShell scripting. Power BI, microservices, Azure, VMs. Linux server experience, phone app development (Xamarin/Blazor). Domain management, DNS, self-hosted email servers. ADZN1_UKTJ