Senior Node Js Developer (Kolkata- Onsite)

Geotech Infoservices; Kolkata District; On-site; INR 900,000 - 1,500,000; Full time

Job summary

Geotech Info Services Pvt Limited in Kolkata is seeking a Senior Node.js Developer to strengthen backend engineering, bridging high‑performance server‑side logic with mobile‑first experiences. You will build scalable APIs and contribute to architecture while supporting frontend integration for mobile platforms.

The role emphasizes API design, performance optimization, and collaboration with junior developers in a fast‑growing team focused on EU/US projects.

Qualifications

• 3–5 years of backend experience with Node.js and modern JS/TS.
• Experience with microservices, serverless, and secure cloud networking.
• Strong design and optimization skills for relational and NoSQL databases.

Responsibilities

• Build robust RESTful or GraphQL APIs with Node.js and frameworks.
• Contribute to architecture decisions for scalable backend services.
• Collaborate with mobile teams to optimize backend for Flutter/mobile consumption.

Skills

Node.js

JavaScript/TypeScript

Architecture

Tools

Express.js

NestJS

Docker

Redis

AWS/Azure

Job description

About Us

Geotech Info Services Pvt Limited is a 24+ year old software development company based in Kolkata, India. The company is focused on bringing efficient business solutions using new and evolving technologies to mostly EU and US clients. Geotech has gained rich experience and knowledge in various technology verticals and has developed software used by well‑known companies like Villeroy and Boch, Netto Marken Discount, Landis and Gyr, Sandoz, SLM Finland, etc. Additionally, the company has recently launched "Real Fantasy Teams," a Fantasy Football mobile app that allows users to create their own team from a selected league or tournament and evaluate player performance in real-time.

Senior Node.js Developer

We are looking for a Senior Node.js Developer. As a Senior Node.js Developer, you will play a key role in our backend engineering efforts, bridging the gap between high‑performance server‑side logic and mobile‑first user experiences. You'll build scalable APIs and, ideally, leverage your knowledge to ensure seamless mobile integration and occasional front‑end contributions.

Core Responsibilities

• 1. Backend Development: Build robust RESTful or GraphQL APIs using Node.js and frameworks like Express.js or NestJS.
• 2. Architecture Contribution: Contribute to application architecture and design decisions for scalable backend services.
• 3. Mobile Integration: Collaborate with mobile teams (or contribute directly) to ensure backend performance is optimized for Flutter/mobile consumption.
• 4. Performance & Scalability: Optimize server‑side logic for high concurrency and manage database schema design (MongoDB, PostgreSQL, or MySQL).
• 5. Code Quality: Uphold high standards through rigorous code reviews, unit testing, and automated testing pipelines.
• 6. Collaboration: Provide technical guidance to junior developers and support them through code reviews and pairing.

Required Skills & Qualifications

• 1. Strong Node.js Knowledge: Minimum 3-5 years of experience in backend development with deep proficiency in JavaScript/TypeScript.
• 2. Architecture: Experience with microservices, serverless architecture, and secure networking on cloud platforms like AWS or Azure.
• 3. Database Management: Strong skills in designing and optimizing RDBMS and NoSQL databases.

Bonus: Flutter Development (Preferable but Not Necessary to Have)

• 1. Cross‑Platform Expertise: Familiarity with Dart and the Flutter framework for building iOS and Android apps.
• 2. State Management: Understanding of state management patterns such as Provider, Bloc, or Riverpod.
• 3. App Lifecycle: Experience with mobile‑specific features like push notifications, offline storage (SQLite/Hive), and app store deployments.

Tools You'll Use

• 1. Backend: Node.js, Express.js/NestJS, Docker, Redis.
• 2. Mobile (Plus): Dart, Flutter, Firebase (Auth, Firestore, FCM).
• 3. DevOps: GitHub Actions, Jenkins, or similar CI/CD tools.