Senior / MERN Stack Developer

Who We are: Short video abous us Paxcom a leading Digital Solution Provider is a part of Paymentus now, a leading electronic bill payment provider. PaymentUs leads the North American marketplace in electronic bill payment solutions and have recently signed a partnership with Paypal, Alexa and Walmart. Recognized by Deloitte as one of the fastest growing companies in North America, Paymentus is the premier provider of innovative, reliable, and secure electronic bill presentment and payment services for more than 1300 clients leading the Utility, Telecom, Auto Finance, Insurance, Consumer Finance, and Health industries. Our comprehensive eBilling and Payment Platform allows our clients to provide a unified customer bill-pay experience that includes online, mobile, IVR, text, kiosk, and agent-assisted channels, as well as a full range of customer communication options. For more details, please visit www.paymentus.com & www.paxcom.ai Job Title: Senior Software Engineer (MERN) Years of Experience : 4+ Years Job Type: Full Time | Work from Office Job Location : Mohali/Gurugram Interview Process: Tech Round 1 (Webcam) >> Tech Round 2 (Face-to-Face / Webcam) >> Tech 3 (If Required) The process has been kept concise to ensure a smooth and efficient evaluation experience for both candidates and the hiring team. Professional Experience: Designed, developed, tested, and deployed scalable full-stack web applications using the MERN stack (MongoDB, Express.js, React.js, and Node.js) for enterprise and SaaS-based solutions. Built high-performance RESTful APIs using Express.js and Node.js, implementing authentication, authorization (JWT/OAuth), role-based access control, and secure API communication. Leveraged Node.js asynchronous programming model, Promises, async/await, streams, and event-driven architecture to build efficient and scalable backend services. Designed and optimized MongoDB databases, including schema design, aggregation pipelines, indexing strategies, query optimization, and performance tuning for handling large datasets. Developed responsive and reusable UI components using React.js, React Hooks, Context API, Redux Toolkit, and React Router, ensuring seamless user experiences across devices. Integrated third-party APIs, payment gateways, email services, cloud storage, and authentication providers into web applications. Implemented state management using Redux and Context API for complex frontend applications, improving maintainability and application performance. Worked extensively with JavaScript (ES6+) and TypeScript to build clean, modular, and maintainable code following modern development standards. Built reusable middleware, validation layers, error handling mechanisms, and logging systems for scalable backend architectures. Containerized applications using Docker and collaborated on deployment pipelines for development, testing, and production environments. Used Git for version…