Full Stack Engineer (AI-native)

Puretech Internet; Bidhannagar; On-site; INR 900,000 - 1,300,000; Full time

Job summary

Puretech Internet is seeking a skilled Full Stack Developer to build and deploy web applications with strong frontend and backend expertise. You will work on API integrations, AI-powered features, and cloud deployments, including LLM-based applications.

Responsibilities include developing end-to-end apps, building REST APIs, managing deployments and CI/CD, and collaborating on AI-assisted coding tools. The role requires Kolkata office presence and experience with AI tools and LLM APIs.

Qualifications

• 3 to 5 years of experience in web application development.

Responsibilities

• Develop end-to-end web applications across frontend, backend, and databases.

Skills

React.js

Next.js

Node.js

TypeScript

REST APIs

Webhooks

PostgreSQL/MySQL

MongoDB

AWS/GCP

Docker

CI/CD

LLM APIs

Claude Code

Job description

Job Overview

We are looking for a skilled Full Stack Developer with hands-on experience in building and deploying web applications. The ideal candidate should have strong expertise in frontend and backend development, API integrations, cloud deployment, and practical experience working with AI-powered tools and LLM-based applications.

Key Responsibilities

• Develop end-to-end web applications across frontend, backend, and databases.
• Build REST APIs, webhooks, and third-party integrations.
• Develop AI-powered features such as assistants, document extraction, summaries, and dashboards.
• Write and review code, tests, and technical documentation.
• Manage application deployment, CI/CD pipelines, and monitoring.
• Use AI-assisted coding tools to improve development efficiency.
• Build AI agents and automated workflows using LLM APIs such as Claude, OpenAI, and Gemini.

Must-Have Skills

• 3 to 5 years of experience in web application development.
• Strong proficiency in React.js, Next.js, Node.js, and TypeScript.
• Experience with REST APIs, webhooks, PostgreSQL/MySQL, and MongoDB.
• Hands-on experience with AWS/GCP, Docker, and CI/CD.
• Experience building at least one project or feature using LLM APIs.
• Regular experience with AI coding tools such as Claude Code.
• Willingness to work from the Kolkata office.

Good to Have

• Knowledge of Python and Vector Databases.
• Experience with marketing or analytics platform APIs such as Google, Meta, and BigQuery.