Full-Stack Developer MERN + AWS & SQL

Highkeen Technologies Pvt Ltd; Kolkata District; On-site; INR 800,000 - 1,200,000; Full time

Job summary

Highkeen Technologies Pvt Ltd in Kolkata is seeking a skilled Full-Stack Developer with 3–5 years of relevant experience to build scalable web applications. You will focus on robust backend logic, relational databases, and compelling frontend experiences using React.

The ideal candidate has strong JavaScript foundations, hands-on Node.js/Express.js, SQL database design, and experience deploying serverless functions with AWS Lambda.

Qualifications

• Strong experience with JavaScript across the stack.
• Proficiency with React.js, Hooks, state management.
• Deep Node.js and Express.js expertise.
• Experience designing schemas and writing SQL queries.
• Hands-on AWS Lambda and other AWS services.
• Git/GitHub version control proficiency.
• Knowledge of TypeScript and CI/CD pipelines is a plus.

Responsibilities

• Develop high-quality, responsive frontend features using React.js.
• Design and implement scalable server-side logic using Node.js and Express.js.
• Design, implement, and maintain relational databases using SQL.
• Write and optimize complex SQL queries and ensure data integrity.
• Develop and deploy serverless backend logic using AWS Lambda.
• Integrate third-party APIs and manage database schemas.
• Collaborate with cross-functional teams to define, design, and ship new features.

Skills

JavaScript

React.js

Node.js

Express.js

SQL

AWS Lambda

Git/GitHub

TypeScript

CI/CD

Tools

PostgreSQL

MySQL

MS SQL Server

Job description

We are looking for a skilled and motivated Full-Stack Developer with around 3 to 5 years relevant experience to join our team. You will be responsible for building and maintaining scalable web applications, focusing on robust backend logic, relational database management, and seamless frontend user experiences. The ideal candidate has a strong foundation in JavaScript and experience deploying serverless functions.

Minimum relevant experience

• 3 to 5 years

Key Responsibilities

• Develop high-quality, responsive frontend features using React.js.
• Design and implement scalable server-side logic using Node.js and Express.js.
• Design, implement, and maintain relational databases using SQL.
• Write and optimize complex SQL queries and ensure data integrity.
• Develop and deploy serverless backend logic using AWS Lambda.
• Integrate third-party APIs and manage database schemas.
• Collaborate with cross-functional teams to define, design, and ship new features.

Required Skills & Qualifications

• Proficient in core javascript.
• Frontend: Proficiency in React.js, including Hooks, State Management (Redux or Context API), and modern CSS frameworks.
• Backend: Strong expertise in Node.js and Express.js.
• Database: Proficiency in SQL (PostgreSQL, MySQL, or MS SQL Server). Ability to design schemas, handle migrations, and write efficient joins/procedures.
• Cloud: Understanding of AWS services, specifically hands-on experience or knowledge of AWS Lambda functions.
• Familiarity with other AWS services like S3, RDS (Relational Database Service), API Gateway.
• Version Control: Solid understanding of Git/GitHub.
• Preferred Qualifications
• Familiarity with ORMs like Drizzle or Sequelize.
• Knowledge of TypeScript.
• Experience with CI/CD pipelines.