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.