Responsibilities:

• Build and maintain modular, scalable React components using functional programming principles;
• Promote coding standards and educate junior client teams on proper React patterns and tooling;
• Implement unit and integration tests to ensure code reliability;
• Optimize application performance and bundle size;
• Design and maintain RESTful APIs using Express.js with a focus on modularity, testability, and maintainability;
• Mentor junior client teams on backend architecture best practices;
• Implement middleware for logging, authentication, validation, and error handling;
• Integrate with SQL databases and external APIs;
• Ensure API security, performance, and scalability.

Requirements

• 3–5+ years of experience with React (16.8+), using hooks-based functional components;
• Proficient in React Router for client-side routing;
• Strong TypeScript skills with strict typing and generics, applied in both frontend and backend;
• Experience with state management solutions such as React Context;
• Familiarity with CSS-in-JS or utility-first CSS frameworks (e.g., Tailwind CSS);
• Experience implementing unit and integration tests in both frontend and backend applications;
• Hands-on experience with Node.js (LTS) and Express.js for building RESTful APIs;
• Solid understanding of asynchronous programming and middleware patterns;
• Experience working with relational databases like MySQL;
• Input validation using libraries such as Zod;
• Environment and configuration management using dotenv, cross-env, or similar tools;
• API documentation using OpenAPI (Swagger);
• Familiarity with Git and basic CI workflows (e.g., GitHub Actions).