NET Full Stack Developer

Job Title:

Senior .

NET Full Stack Developer Location:

Stamford, CT (Onsite)

Duration:

6+ Months Job Summary We are seeking a highly skilled Senior .NET Full Stack Developer with extensive experience in backend development using .NET Core and hands-on exposure to modern frontend technologies. The ideal candidate will have strong coding expertise, experience integrating AI/LLM solutions, and the ability to contribute to scalable application architecture and platform design. Key Responsibilities Design, develop, and maintain scalable applications using .NET Core. Build and enhance backend services, APIs, and microservices with a focus on performance and reliability. Integrate Large Language Model (LLM) APIs such as OpenAI, Anthropic, and Azure OpenAI into enterprise applications. Develop AI-powered workflows including prompt engineering, streaming responses, confidence scoring, and hallucination mitigation. Design and implement human-in-the-loop workflows for AI-driven solutions. Develop event-driven architectures using technologies such as Service Bus and RabbitMQ. Design and optimize document-based data models using CosmosDB or similar NoSQL databases. Build and maintain frontend applications using ReactJS and Next.js. Collaborate with cross-functional teams to deliver high-quality software solutions. Participate in architectural discussions and contribute to platform scalability and modernization initiatives. Utilize AI-assisted development tools such as GitHub Copilot, Claude Code, or Cursor to enhance productivity and code quality. Required Qualifications 10+ years of overall software development experience. Strong hands-on experience with .NET Core backend development (mandatory). Proven ability to write production-quality code with minimal supervision. Experience with Entity Framework and LINQ. Working knowledge of SQL Server and the ability to write and optimize queries. At least 1 year of recent hands-on experience with ReactJS. Understanding of JavaScript and/or TypeScript (TypeScript preferred). Solid knowledge of React concepts including component lifecycle, state management, and props. Ability to contribute to both backend and frontend development efforts, with approximately 20 25% involvement in UI-related tasks. Experience working with REST APIs and modern web application architectures. Strong problem-solving and analytical skills. Preferred Qualifications Experience with Next.js, including App Router, Server Components, and Server Actions. Knowledge of Azure services and cloud-native development concepts. Experience with CosmosDB or other NoSQL databases. Familiarity with event-driven architecture patterns. Exposure to Docker and Kubernetes. Experience building AI-enabled applications and integrating LLM services into production environments.