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Sahil Kumar
Sahil Kumar
dev.sahilkumar69@gmail.com

MERN Stack Developer New Delhi, India

Sahil Kumar

I build calm, dependable interfaces for products that move fast.

Welcome, and thank you for stopping by. I’m a MERN stack developer in New Delhi, crafting responsive frontends for blockchain trading platforms and the admin dashboards behind them — with a steady focus on clean architecture, real-time data, and performance that holds up.

View selected workGet in touch
FrontispieceNew Delhi, India
Currently
MERN Stack Developer at Bitgolabs Technologies
Based in
New Delhi, India
Focus
React, TypeScript, Node.js & real-time UI
About

Steady hands for fast-moving products.

My name is Sahil Kumar, and I’m a MERN stack developer with more than a year of professional experience building and caring for responsive frontends — most recently for blockchain-based trading platforms, where an interface has to stay clear while the numbers never stop moving.

At Bitgolabs Technologies I look after the frontend of our trading products: delivering features, holding the line on UI quality, and keeping things stable day to day. At Devnexus Solutions I built React dashboards with custom hooks, Zustand, and React Query — improving application performance by 30% and trimming API response times by 20% along the way.

Beyond client work, I’m pursuing a Master of Computer Applications after completing my BCA in 2025. As General Secretary and IT Director at my college, I organized hackathons and technical workshops for more than 300 students — a lasting reminder that the best engineering is the kind you can explain.

  1. Clarity over cleverness

    Interfaces should explain themselves, especially when the data is live and the stakes are real.

  2. Architecture that ages well

    Reusable components and a modular structure, so the next feature is easier to ship than the last.

  3. Performance, measured

    Lazy loading, memoization, and careful rendering — tuned against real numbers, not hunches.

Work

Selected work, from trading floors to admin desks.

A few projects I’ve helped bring to life — each one a lesson in clarity under pressure.

Plate I.Rounds, rising and falling

P2P Prediction MarketLive

PredB

A peer-to-peer BTC and gold binary prediction platform, with trading rounds that settle on-chain.

  • Built the dashboard page, giving users a clear, responsive view of their activity and market rounds.
  • Connected the frontend to backend APIs and blockchain smart contracts, presenting on-chain and off-chain data side by side.
  • Implemented support on both sides of the product, letting users raise issues and admins review and respond to them.
  • React
  • Tailwind CSS
  • REST APIs
  • Smart contracts
Plate II.One message, many recipients

Campaign & Messaging Admin

WhatsApp Messaging Panel

An admin panel for bulk WhatsApp communication — webinar announcements, promotional campaigns, and one-to-one conversations.

  • Built template-driven bulk messaging for user groups, plus a personal panel for one-to-one messages.
  • Added admin tools to upload users and block or unblock them, controlling exactly who receives messages.
  • Introduced configurable bot controls for automated messages and sub-admin roles with restricted permissions.
  • React
  • Node.js
  • REST APIs
  • Role-based access
Plate III.Hours, kept in good order

Full-stack Productivity SuiteLive

Time Entry System

A full-stack application for logging, managing, and analyzing employee productivity across projects.

  • Developed role-based time tracking for admins, managers, and employees, covering employee, project, and timesheet workflows.
  • Automated weekly timesheet validation with missing-day detection and multi-level report filters.
  • Designed a fully normalized schema and optimized join- and aggregation-heavy queries for reporting.
fewer incomplete submissions
40%
faster report generation
30%
  • React
  • Node.js
  • SQLite
  • React Charts

More of my work lives on GitHub. Client projects under NDA are happy to be discussed on request.

Browse my GitHub (opens in a new tab)
Experience

The places that shaped my craft.

  1. Aug 2025 — Present

    New Delhi, India

    MERN Stack Developer

    Bitgolabs Technologies Pvt. Ltd.

    • Manage and maintain the frontend of blockchain-based trading platforms, owning feature delivery, UI quality, and day-to-day stability.
    • Lead UI design implementation and responsive design with Tailwind CSS, keeping the trading experience consistent across desktop, tablet, and mobile.
    • Maintain data-driven dashboards for trading and market data with React Query, keeping the interface clear and reliable for active users.
    • Maintain reusable components and a clean, modular frontend architecture that makes new features faster to ship and easier to maintain.
    • React
    • Tailwind CSS
    • React Query
    • Responsive design

  2. May 2025 — May 2026

    Gurugram, India

    Software Developer

    Devnexus Solutions Pvt. Ltd.

    • Built high-performance React dashboards using custom hooks, Zustand, and React Query.
    • Improved application performance by 30% using lazy loading, memoization, and optimized rendering.
    • Reduced API response time by 20% and integrated real-time features using Socket.IO.
    • Created reusable components and a clean architecture for better maintainability and faster development.
    • React
    • Zustand
    • React Query
    • Socket.IO

Education

  • Master of Computer Applications

    Dronacharya Government College, Gurugram University

    2026 — 2028 In progress

  • Bachelor of Computer Applications

    Dronacharya Government College, Gurugram University

    2022 — 2025

Leadership

General Secretary & IT Director

Dronacharya Government College, Gurugram, India

Led technical initiatives and student engagement.

  • Organized hackathons and technical workshops for 300+ students, increasing participation in tech events by 40%.
  • Promoted web development and technical learning through structured sessions and events.
Skills

Services, and the tools of the trade.

Where I can help, and what I reach for when I do.

Services

  • Frontend Engineering

    Responsive, accessible interfaces in React and Next.js, built from reusable components and a clean, modular architecture.

  • Dashboards & Real-time Data

    Data-dense dashboards for trading and operations, kept fresh with React Query and live updates over Socket.IO.

  • APIs & Full-stack Features

    Node.js and Express services, REST APIs secured with JWT, and well-normalized schemas across SQL and MongoDB.

  • Performance & Care

    Lazy loading, memoization, and render tuning — plus the day-to-day attention that keeps a production frontend stable.

Toolkit

Languages, frameworks, and tools I reach for day to day.

Languages
  • JavaScript (ES6+)
  • TypeScript
  • SQL
  • HTML5
  • CSS3
Frontend
  • React.js
  • Next.js
  • Redux
  • Zustand
  • React Query
  • Tailwind CSS
  • Material UI
  • Shadcn UI
  • Bootstrap
Backend & APIs
  • Node.js
  • Express.js
  • REST APIs
  • Socket.IO
  • JWT
  • Redis
  • Mongoose
Databases
  • PostgreSQL
  • MySQL
  • SQLite
  • MongoDB
Tools
  • Git
  • GitHub
  • Linux
  • Postman
  • VS Code
  • Figma

Credentials

Structured courses that sharpened the fundamentals.

  • NamasteDev

    Node.js

    Advanced backend development — cron jobs, advanced routing, authentication, and system design.

  • NamasteDev

    Data Structures & Algorithms

    Arrays, strings, problem solving, data structures, and algorithmic thinking.

Contact

Let’s build something that lasts.

Have a role in mind, a product that needs a steady frontend hand, or a question about my work? I’d be glad to hear from you — email is the quickest way to reach me.

I read every message and reply as soon as I can.

Write to me

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