Shubham Kumar, Software Developer at Paytm. Making sure your payment goes through.

Shubham Kumarhovertap to meet me

Backend taught me how to make systems scale. Gen AI is teaching me how to make them think. Now a software developer at Paytm.

Experience

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  1. Aug 2026 - Present

    Software Developer

    Building and maintaining backend services for payments with Java, Spring Boot and microservices. Also working on Gen AI integrations that make internal workflows smarter.

  2. 2026 - Present

    Freelance Developer

    Building websites and backends for small businesses, like poonamprinting.in, from the first call through to deployment and support after launch.

    Self-employed
  3. 2023 - Present

    Student, B.Tech CSE

    Studying Computer Science & Engineering. Most of what I know about building software came from projects done alongside the coursework: ERPs, campus platforms and client sites.

    Sharda University
  1. 01Poonam Printing Shop screenshot

    Poonam Printing Shop

    Order management for a real print shop: customers track orders and status live, the owner gets invoices and an admin panel for products and pricing.

  2. 02NestLiving screenshot

    NestLiving

    Home & lifestyle store covering furniture, décor, lighting and ceramics. Has auth, a product catalog, cart, wishlist and checkout.

  3. 03CampusSetu screenshot

    CampusSetu

    A campus platform for students and faculty, split into services behind an API gateway, with WebSocket for the real-time bits.

  4. 04E-Zone screenshot

    E-Zone

    A university ERP with role-based dashboards, JWT auth and live messaging. Deployed through a CI/CD pipeline on Docker + AWS.

  5. 05ECommerce screenshot

    ECommerce

    Spring Boot e-commerce backend: authentication, cart and payments, with MongoDB for storage.

  6. 06Fee Management System screenshot

    Fee Management System

    Where it started. A Java Swing app for keeping student fee records, payments and reports, with JDBC talking to MySQL.

  7. 07Portfolio screenshot

    Portfolio

    This site. React + Vite, hand-written CSS, no UI kit.

  1. Yes. I take on a small number of freelance projects at a time so each one gets proper attention. Fill in the contact form with a few details and I'll tell you honestly whether I can take it on.

  2. Mostly backend work: REST APIs, microservices, database design and fixing slow or flaky systems. I also build full stack apps with React + Spring Boot, business websites, and AI features like RAG-based assistants.

  3. Java, Spring Boot and microservices on the backend; MySQL, PostgreSQL, MongoDB and Redis for data; Docker and AWS for deployment; React and Node.js on the frontend; Spring AI and LangChain4j for LLM work.

  4. We start with a short call to understand what you need. Then I share the scope, timeline and quote. I build in small milestones with regular updates, deploy it, and hand over everything you need to run it.

  5. Yes. Bug fixes, small changes, dependency updates and performance tuning after launch are all part of how I work, so the project doesn't fall apart a month later.

Let's Build Together

Have a project, a backend that needs work, or a role you think I'd fit? Fill in a short form and I'll get back to you within a day.

7 projects shipped so far