Senior .NET Full Stack Developer

Salary: $58000 - 96000 per year Requirements: We are looking for a senior .NET full stack developer with 7+ years of overall software development experience. We require at least 5+ years of hands-on C# development. Strong experience with ASP.NET Core 8, .NET Framework, MVC, and Web API 2.0 is needed. Solid expertise in SQL Server, T-SQL, query tuning, indexing strategies, and transaction semantics is expected. Exposure to PostgreSQL is preferred. We need experience with Angular 14–18, HTML5, CSS3, Bootstrap, jQuery, responsive UI development, and accessibility best practices. A background in microservices architecture, RESTful API development, API design, and service decomposition is required. Practical experience with Docker, Kubernetes, .NET Core architecture, and REST services architecture is essential. We expect strong knowledge of object-oriented programming, functional programming concepts, concurrency, networking, data structures, and application security. Experience with test-driven development, unit testing, integration testing, and contract testing is required. Preferred qualifications include enterprise application design, enterprise architecture principles, reusable libraries, shared components, relational database design, Agile/SDLC experience, software design patterns, concurrency patterns, caching, and performance optimization. Responsibilities: We develop, maintain, enhance, test, and support enterprise platform applications. We design, document, and implement software solutions using modern .NET technologies. We participate in architecture discussions, technical design sessions, and code reviews. We build scalable full-stack applications using C#, ASP.NET Core, Angular, and SQL Server. We create and support RESTful APIs and microservices. We troubleshoot defects and resolve production issues in a timely manner. We analyze change requests and translate them into efficient technical solutions. We perform root cause analysis and recommend durable fixes. We carry out integration testing and evaluate the impact of software changes. We prepare technical documentation, design specifications, and project documentation. We optimize SQL queries and improve database performance. We recommend software enhancements, upgrades, and development best practices. We collaborate closely with development, QA, database, product management, and business stakeholders. We follow SDLC and Agile methodologies throughout the software lifecycle. Technologies: .NET Framework API ASP.NET Angular Bootstrap C# Docker HTML5 Support Kubernetes MVC PostgreSQL REST SQL Security Web jQuery microservices UX UI Design OOP TDD Fullstack More: We are hiring a Senior .NET Full Stack Developer for a 12+ month contract role on a W2-only basis, with opportunities across King of Prussia, PA; Cherry Hill, NJ; Wilmington, DE; Baltimore, MD; and Stamford, CT. This position offers the chance to work on enterprise platform applications using the modern Microsoft stack, contributing to architecture, technical design, development, testing, troubleshooting, and production support in a collaborative cross-functional environment. last updated 28 week of 2026