Senior .NET Developer (ReactJS, Node.js, Azure)

Senior.NET Developer (ReactJS, Node.js, Azure)

We are seeking an experienced Full Stack Developer with strong expertise in ReactJS, Node.js, .NET, and Azure. The ideal candidate will design, develop, and deploy scalable, secure, and high-performance applications while collaborating in Agile teams and supporting production environments.

Design and implement responsive and accessible front-end applications using ReactJS, including hooks, state management, routing, and form handling. Develop RESTful and/or GraphQL APIs using Node.js (Express or NestJS) and.NET (Web API, minimal APIs). Build and optimize data models, stored procedures, and SQL queries for performance and scalability. Deploy and manage applications on Azure services, including App Service, Functions, Storage, Key Vault, Azure SQL, and API Management. Create and maintain CI/CD pipelines using Azure DevOps or GitHub Actions. Implement automated testing and ensure application observability through logging, metrics, and alerting. Follow secure coding practices and ensure compliance with enterprise standards and privacy requirements. Participate in Agile ceremonies, contribute to solution design, perform code reviews, and mentor junior developers. Ensure production readiness, including performance profiling, capacity planning, error handling, and incident response.

Strong experience with ReactJS (v16+) and TypeScript. Experience with Hooks, Context API, Redux (or similar state management libraries), and React Router. Proficiency in HTML5, CSS3/SCSS, responsive design, and accessibility (WCAG standards). Experience with component libraries such as Material UI.

Strong experience with Node.js (Express or NestJS), including asynchronous programming, middleware, validation, and error handling. Experience with .NET (6/7/8), C#, Web APIs, minimal APIs, dependency injection, configuration, async/await, and unit testing. Strong understanding of API design principles, including REST and GraphQL, versioning, pagination, rate limiting, and OpenAPI/Swagger.

Strong experience with SQL schema design, indexing, query optimization, transactions, and stored procedures/functions. Experience with Azure SQL or SQL Server. Familiarity with ORMs such as Entity Framework Core (EF Core) or TypeORM, including migrations.

Hands-on experience with Azure services (App Service, Functions, Azure SQL, Storage, Key Vault, API Management). Experience implementing OAuth 2.0 and JWT-based authentication. Experience with CI/CD pipelines using Azure DevOps or GitHub Actions. Exposure to Infrastructure as Code (IaC) tools such as Bicep, ARM templates, or Terraform (preferred). Experience with observability tools such as Application Insights, dashboards, and alerting systems.

Experience with automated testing, including unit testing (Jest, xUnit), integration testing, and contract testing. Familiarity with tools such as Postman for API testing and mocking. Strong focus on code quality, including linting, formatting, and tools like SonarQube. Adherence to code review best practices and development standards.

Experience with caching (Redis) and messaging systems (Azure Service Bus, Event Hubs). Knowledge of serverless architectures and microservices design patterns. Experience with containerization (Docker) and orchestration (AKS/Kubernetes). Understanding of security best practices, including OWASP Top 10, secrets management, and basic threat modeling. Experience with performance tuning (Lighthouse, Node/CLR profiling) and CDN optimization. Experience working in large enterprise or retail environments. Diverse Lynx LLC is an Equal Employment Opportunity employer. All qualified applicants will receive due consideration for employment without any discrimination. All applicants will be evaluated solely on the basis of their ability, competence and their proven capability to perform the functions outlined in the corresponding role. We promote and support a diverse workforce across all levels in the company.