Sr Node Js Developer (Fintech Domain)

Role Summary

We are looking for a Senior Node.js Developer with strong backend development experience to design and build scalable, secure, and high-performance applications. The role involves working on complex business applications involving APIs, financial workflows, third-party integrations, background processing, and transaction-heavy systems.

Experience working on FinTech, BFSI, lending, LOS/LMS, NBFC, or payment applications will be an advantage but is not mandatory.

Key Responsibilities

• Design and develop scalable backend applications using Node.js, TypeScript and NestJS.
• Build secure and well-structured REST APIs and backend services.
• Design database schemas and develop optimized queries using PostgreSQL/MySQL.
• Integrate third-party services through APIs and webhooks.
• Implement authentication, authorization, RBAC, OAuth2/JWT and other application security controls.
• Build asynchronous workflows using queues, background jobs and event-driven processing.
• Implement reliable webhook processing, retries, idempotency and failure handling.
• Work on transaction-heavy business workflows requiring strong data consistency and auditability.
• Optimize application and database performance for scalability.
• Write clean, maintainable, testable and well-documented code.
• Troubleshoot and resolve production issues.

FinTech Experience – Preferred

Experience with any of the following would be an advantage

• Loan Origination Systems (LOS) / Loan Management Systems (LMS)
• Digital lending / NBFC applications
• Credit bureau integrations
• eNACH / UPI AutoPay / mandate integrations
• Loan disbursement and repayment processing
• Reconciliation and settlement processes
• Financial ledgers and transaction processing
• Audit trails and compliance-driven applications

Required Skills

• 6+ years of software development experience, with strong hands-on Node.js experience.
• Strong proficiency in Node.js, TypeScript and JavaScript.
• Experience with NestJS.
• Experience designing and developing REST APIs.
• Strong understanding of database transactions, indexing and query optimization.
• Experience with Redis, BullMQ, RabbitMQ or similar queue/messaging technologies.
• Experience with authentication, authorization and API security.