Backend Developer

Job Title: Backend Developer (Node.js / Python)Location: Kolkata, West Bengal (On-site / Hybrid / Remote – as applicable)Company: Unnatim Payments Private LimitedExperience: 4–6 YearsEmployment Type: Full-timeAbout the Role

We are looking for a skilled Backend Developer with hands-on experience in Node.js and/or Python frameworks to design, develop, and maintain scalable backend systems for fintech applications. The ideal candidate should have a strong understanding of RESTful API design, database management, and microservices architecture.

Key Responsibilities

• Design, develop, and maintain RESTful and GraphQL APIs using Node.js (Express.js, Next.js, Nest.js) or Python (Django, Flask).
• Build and optimize server-side logic, ensuring high performance and responsiveness.
• Integrate third-party APIs, payment gateways, and internal services.
• Collaborate with front-end developers to define API requirements and ensure smooth integration.
• Manage and optimize databases (MySQL, PostgreSQL, MongoDB).
• Implement authentication, authorization, and data security best practices.
• Write clean, maintainable, and well-documented code.
• Participate in code reviews, testing, and debugging.
• Work closely with the DevOps team to deploy and monitor backend services.
• Contribute to system design discussions and architecture decisions.

Required SkillsTechnical Skills:

• Strong proficiency in JavaScript (Node.js) and/or Python.
• Hands-on experience with:
• Node.js frameworks: Express.js, Nest.js, Next.js (API routes).
• Python frameworks: Django, Flask.
• Strong understanding of REST APIs and microservices architecture.
• Experience with database systems: MySQL, PostgreSQL, MongoDB.
• Knowledge of version control systems (Git, GitHub, GitLab).
• Familiarity with cloud platforms (AWS, GCP, or Azure) and containerization tools (Docker).
• Knowledge of message queues (RabbitMQ, Kafka) is a plus.
• Experience with unit testing frameworks (Jest, PyTest, Mocha, etc.).

Soft Skills

• Excellent problem-solving and analytical skills.
• Strong communication and teamwork abilities.
• Ability to write clean, efficient, and reusable code.
• Attention to detail and a proactive learning attitude.

Educational Qualification

• Bachelor’s degree in Computer Science, Information Technology, or related field.

Preferred Qualifications

• Experience in fintech or payment gateway systems.
• Knowledge of API security standards (OAuth2, JWT).
• Exposure to CI/CD pipelines and automated deployment.

Compensation

• Competitive salary based on experience and skills.
• Performance-based incentives and benefits.

Job Type: Full-time

Pay: ₹35,000.00 - ₹50,000.00 per month

Benefits:

• Provident Fund

Work Location: In person