Backend Developer – Node.js / NestJS

We’re Hiring: Backend Developer – Node.js / NestJS

Company: NuSwipe Technology Pvt. Ltd.

Employment Type: Full-Time

Work Mode: On-site

Location: Aerocity, New Delhi / Gurugram

Candidates may choose either office location based on their convenience.

Experience Required: 3-4 Years

About NuSwipe

NuSwipe Technology Pvt. Ltd. is a technology-driven company operating across digital gift cards, corporate rewards, loyalty, incentives and corporate gifting solutions.

We are building scalable B2B and consumer-facing technology platforms to support digital rewards, transactions, integrations and corporate engagement programs.

About the Role

We are looking for an experienced Backend Developer with strong hands-on expertise in Node.js, NestJS, TypeScript, PostgreSQL and REST APIs. The ideal candidate should have experience building secure, scalable and transaction-intensive backend systems and be comfortable working with third-party APIs, databases, payments and production environments. You will work closely with our Technical Lead / Full Stack Architect, frontend and mobile development teams.

Key Responsibilities

• Develop and maintain backend applications using Node.js, NestJS and TypeScript
• Build scalable and secure REST APIs
• Integrate third-party APIs, webhooks and external services
• Work extensively with PostgreSQL, including schema design, queries, indexing and optimisation
• Build reliable order, payment and transaction workflows
• Implement authentication, authorization and RBAC
• Handle retries, timeouts, idempotency and duplicate transaction scenarios
• Use Redis for caching and background-processing requirements
• Write clean, reusable and production-ready code
• Participate in code reviews, debugging and performance optimisation
• Collaborate with React/Next.js and Flutter developers
• Maintain API documentation using Swagger/OpenAPI
• Troubleshoot staging and production issues

Required Skills

• Node.js – Minimum 3+ years of strong hands-on experience preferred
• NestJS & TypeScript
• Express.js
• PostgreSQL / SQL
• Strong understanding of database design, relationships, transactions, indexing and query optimisation
• REST APIs & third-party API integrations
• Webhooks and API failure handling
• JWT / Authentication / Authorization / RBAC
• Redis / Caching
• Git & collaborative development workflows
• Unit and integration testing
• Strong debugging and problem-solving skills

Good to Have : AWS / Cloud, Docker, BullMQ / RabbitMQ / AWS SQS, Payment Gateway Integrations, CI/CD, Microservices / Event-Driven Architecture, Logging & monitoring tools

Preferred Industry Experience

Candidates with experience in FinTech, Digital Gift Cards / Vouchers, Payments, Digital Wallets, Rewards & Loyalty, E-commerce or transaction-heavy platforms will be highly preferred.

Experience with voucher APIs, payment systems, reconciliation or high-volume third-party integrations will be an added advantage.

What We’re Looking For

Someone who is genuinely hands-on, understands backend systems beyond basic CRUD APIs, can independently own assigned modules, thinks carefully about transaction reliability and data consistency, and can work effectively under the guidance of a Technical Lead / Architect.

📍 Aerocity, New Delhi / Gurugram