Software Development Engineer I (MERN)

Weblinear Technologies LLP; India; On-site; INR 1 - 2; Full time

Job summary

Weblinear Technologies LLP is seeking a Software Development Engineer I (SDE-I) skilled in MERN stack to build scalable web applications and APIs. You will collaborate with senior engineers and product teams to deliver high-quality software.

The role emphasizes full-stack development, code quality, and modern frontend systems. You will work on design, development, and maintenance of MERN-based projects, implementing secure authentication, RESTful APIs, and efficient state management using React.

Qualifications

• Proficiency in JavaScript/TypeScript with ES6+ features.
• ,

Responsibilities

• Design, develop, and maintain full-stack MERN applications.
• Build scalable RESTful APIs with Node.js and Express.js.
• Integrate frontend components with backend services and APIs.
• Implement reusable components and modular architecture.
• Ensure secure authentication and authorization mechanisms.

Skills

JavaScript

TypeScript

React.js/React Hooks

Node.js

Express.js

MongoDB

PostgreSQL

RESTful APIs

JWT/OAuth

HTML5/CSS3

Redux

Git

Postman

Tools

Docker

AWS/GCP/Azure

Job description

We are looking for a Software Development Engineer I (SDE-I) specializing in the MERN stack (MongoDB, Express.js, React, Node.js) to join our engineering team. The ideal candidate will contribute to building scalable web applications, APIs, and modern front-end systems while working closely with senior engineers and product teams.

Key Responsibilities

Application Development

• Design, develop, and maintain full-stack applications using the MERN stack
• Build scalable RESTful APIs using Node.js and Express.js
• Integrate frontend components with backend services and APIs
• Implement reusable components and modular architecture
• Implement secure authentication and authorization mechanisms
• Work with databases such as MongoDB or PostgreSQL
• Optimize queries, indexes, and database performance
• Handle asynchronous programming and background tasks

Frontend Engineering

• Build dynamic user interfaces with React hooks and modern state management
• Optimize frontend performance and bundle size
• Integrate third-party APIs and services

Software Engineering Practices

• Write clean, maintainable, and well-documented code
• Participate in code reviews
• Follow Git-based version control workflows
• Collaborate with cross-functional teams (product, design, QA)
• Debug, troubleshoot, and resolve production issues

Requirements

Category

Technical Skills

Details / Expectations

Programming Languages JavaScript, TypeScript Strong ES6+ fundamentals, async programming, modular coding practices

Frontend Framework React.js React Hooks, component-based architecture, state management

Backend Runtime Node.js Server-side development, asynchronous programming, API logic

Backend Framework Express.js Building REST APIs, middleware usage, routing architecture

Database MongoDB / PostgreSQL Schema design, indexing, query optimization, CRUD operations

API Development RESTful APIs API design, request validation, error handling

Authentication & Security JWT, OAuth User authentication, authorization flows, secure API practices

Frontend Development HTML5, CSS3, Responsive Design Mobile-first UI development and layout handling

State Management Context API / Redux (Preferred) Managing application state in scalable frontends

Version Control Git Branching, pull requests, collaborative development

API Testing Tools Postman / Insomnia Testing, debugging, and documenting APIs

Package Management npm / yarn Dependency management and project configuration

DevOps Basics Docker (Preferred) Containerization basics and local development environments

Deployment Basics Cloud Platforms (AWS / GCP / Azure) Basic understanding of deploying Node.js applications

Development Practices Debugging, Code Review, Logging Writing maintainable code and troubleshooting production issues