Senior Full Stack Developer (.NET + React / Next.js)

Senior Full Stack Developer (.NET + React / Next.js) Overview We are looking for a Senior Full Stack Developer with strong experience in .NET, React, and Next.js to build scalable, secure, and high-performance enterprise applications. The role is backend-focused while requiring solid frontend development experience using modern React technologies. Experience • 5+ years of professional software development experience • Strong experience with C#, ASP.NET Core, and .NET 8/10 • Strong experience with React, TypeScript, and modern frontend development Key Responsibilities • Design, develop, and maintain backend services using ASP.NET Core / .NET • Build modern frontend applications using React, TypeScript, and Next.js • Design and implement REST APIs and Microservices • Integrate with external systems such as ERP, payment gateways, government services, and third-party APIs • Implement caching using Redis and in-memory caching • Develop event-driven solutions using RabbitMQ, Kafka, or similar technologies • Apply Clean Architecture, SOLID principles, and development best practices • Implement authentication and authorization using JWT, OAuth 2.0, and OpenID Connect • Optimize application performance, security, scalability, and availability • Write unit and integration tests • Conduct code reviews and mentor junior developers • Collaborate with DevOps teams on CI/CD, Docker, and deployments Technical Requirements Backend • C# • ASP.NET Core / Web API • .NET 8/10 • Entity Framework Core • SQL Server and/or PostgreSQL • REST API design • Microservices architecture • Redis • RabbitMQ / Kafka / Azure Service Bus Frontend • React • TypeScript • Next.js • JavaScript ES6+ • HTML5 / CSS3 • Responsive design • React Hooks • State management using Redux Toolkit, Context API, Zustand, or similar • REST API integration Security Good understanding of: • JWT • OAuth 2.0 • OpenID Connect • Role-based authorization • API security • Input validation • CORS • Rate limiting • OWASP security practices • Secure secrets and configuration management DevOps & Engineering Practices Experience with: • Git • Docker • CI/CD pipelines • Code reviews • Automated testing • Logging and monitoring Nice to Have • Kubernetes • Keycloak • OpenTelemetry • Grafana / Prometheus • Azure or AWS • CQRS / DDD • API Gateway technologies • Playwright / Testcontainers • Understanding of AI-driven application concepts, including integration with AI/LLM APIs, AI assistants, chatbots, RAG, agents, and secure AI API integration What We Are Looking For A senior developer capable of taking ownership of features end-to-end, from database and backend APIs to frontend implementation, testing, deployment, and production support. The ideal candidate should have strong backend expertise in .NET, solid React/Next.js skills, and good knowledge of modern distributed application architecture.