MERN Stack Developer

Key Responsibilities

Design, develop, and maintain full-stack web applications using the MERN stack (MongoDB, Express.js, React.js, Node.js)

Build scalable backend services and RESTful APIs using Node.js and Express

Write clean, efficient, and reusable frontend components using React.js

Implement business logic using JavaScript and TypeScript

Design and manage databases using PostgreSQL (schema design, queries, performance tuning)

Ensure application performance, security, and scalability

Collaborate with cross-functional teams to understand requirements and deliver features

Write unit tests, debug issues, and optimize existing code

Participate in code reviews and follow best engineering practices

Maintain proper documentation for code and APIs

Must-Have Skills & Qualifications

2+ years of professional experience as a MERN Stack / Full Stack Developer

Strong fundamentals of JavaScript - Closures, Hoisting, Event Loop, Promises, Async/Await

Advanced JavaScript concepts - Design patterns, performance optimization, memory management

TypeScript - Types, interfaces, generics, strict typing in real-world projects

Node.js - Building scalable APIs, middleware, authentication, error handling

React.js - Hooks, state management, component lifecycle, reusable components

PostgreSQL - Database design, joins, indexing, query optimization

Git (Very Strong Required) ○ Branching strategies (Git Flow), pull requests, conflict resolution

Experience working in collaborative Git-based environments (Git Hub/Git Lab/Bitbucket)

Solid understanding of REST APIs and HTTP protocols

Ability to write clean, maintainable, and testable code

Good-to-Have Skills

Experience with AWS Cloud Services - EC2, S3, RDS, IAM, basic networking concepts

Understanding of CI/CD pipelines - GitHub Actions, GitLab CI, Jenkins, or similar tools

Exposure to Docker or containerization

Experience with system design and scalability considerations

Knowledge of basic security best practices (JWT, OAuth, OWASP concepts)