Senior Node Js Developer (Kolkata- Onsite)

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.