Back End Developer

About This Role

Developing and maintaining scalable backend services, RESTful APIs, and frontend applications using modern technologies is the core of this role. The ideal candidate will have a strong foundation in JavaScript/TypeScript, Node.js, React/Next.js, and databases, with an interest in API integrations, secure application development, debugging, and delivering reliable software solutions.

Responsibilities

• Build and maintain RESTful APIs across Node.js/Express and NestJS backend services
• Implement and support integrations with payment gateways (PayU, Razorpay, PhonePe, Easebuzz, JioPay) and card networks (Mastercard, Visa)
• Work with relational databases (MySQL/PostgreSQL via Sequelize/TypeORM) and document stores (MongoDB via Mongoose)
• Build frontend features using React/Next.js (Redux, Ant Design/MUI)
• Implement webhook- and callback-driven integrations with third-party financial APIs
• Handle sensitive financial and PII data using appropriate encryption and security practices
• Participate in code review, testing, and CI/CD-based deployments (GitHub Actions, PM2)
• Debug and resolve production issues across distributed services
• Be an individual contributor with a high sense of responsibility and ownership

Requirements

• Bachelor's/Master's in Computer Science, Engineering, or related field
• Strong fundamentals in Data Structures, Algorithms, Object-Oriented Design, and Databases (relational + NoSQL)
• Proficiency in JavaScript/TypeScript, with hands-on experience in Node.js (Express and/or NestJS)
• Familiarity with React or Next.js
• Understanding of REST API design, authentication (OAuth/JWT), and basic encryption concepts
• Good problem-solving and algorithmic skills

Nice to have:

• Prior exposure to the payments/fintech domain
• Familiarity with Python for cross-stack adaptability