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SUSHIL

SUSHIL KUMAR

Portrait of Sushil Kumar smiling in a yellow bomber jacket on a beige background
// the dev you can trust with prod

// manifesto

I build front.I build back.I test everything.I scale & deploy.

I'm one developer who can take an idea from a rough sketch to a product that's running and holding up: the screens people see, the API and data behind them, and the servers it all lives on. For you that means fewer handoffs, fewer surprises, and one person who understands how the whole thing fits together. Bring me the problem, and I'll help you shape it, build it and keep it running.

What I work with

// languages & tools

Frontend

Interfaces and admin panels that stay fast and clear when the data gets busy. Server-rendered and mobile-first by default, because most people arrive on a phone.

  • TypeScript
  • React
  • Next.js
  • Redux Toolkit
  • Tailwind
  • Framer Motion

Backend

APIs, auth, queues and data that keep working as more people show up. I shape the schema and the endpoints together, so they fit each other.

  • Node.js
  • Fastify
  • PostgreSQL
  • Prisma
  • Redis
  • BullMQ

Servers, delivery & tests

I set up the servers too: reverse proxy, process manager, CI/CD and test suites, so a release is routine instead of an event.

  • Server setup
  • Caddy
  • PM2
  • GitHub Actions
  • Jest
  • Playwright
  • AWS S3
  • Stripe

OtherVSMe

// a typical split team vs. one fullstack developer, per feature

Late night: a desk buried in cables, monitors full of red error logs
before: five people, four handoffs, one lost brief
Happy developer carrying a laptop on a lime-green background
after: one person who knows the whole thing
Architecture
Build the feature first, restructure when it gets bigger
Design the architecture with a clear path from MVP → scale
Scalability
Scale when traffic hurts
Scale-ready from day one
Performance
Optimize when things slow
Performance built from day one
Security
Secure after something breaks
Security designed from day one
Testing
Test at the finish line
Test continuously while building
Quality
Debug problems in production
Catch problems before production
Growth
Rewrite when growth arrives
Build with growth in mind

Work Experience

// the pipeline

  1. Associate Fullstack Developer

    CURRENT

    Mind Roots

    SEP 2025 – PRESENT

    A software services company, which is exactly why I joined: a new kind of product every few months, each one built end to end. So far that's a mobile guessing game with its backend and admin panel, a grocery list and recipe app, a gym trainer booking app with real-time changes, and a deep linking platform with custom domains and payments. Now I'm on Bless Me, a marketplace for booking online sessions with spiritual leaders. On each one I take a requirement from a rough idea to something running in production: the interface, the API, queues, servers, pipelines and tests.

    • Node.js
    • Next.js
    • React
    • PostgreSQL
    • Redis
    • BullMQ
    • CI/CD
  2. Fullstack Developer

    Script Space

    APR 2025 – AUG 2025

    Hired to keep about 56 journal websites running on OJS. The bigger problem sat inside the company: customer relations, writing and finalizing teams passed work along through Excel sheets and WhatsApp, and something got lost at every handoff. I built a single CMS for all three teams on shared data, with roles, assignment and approve or reject steps, so work moves from one person to the next with a clear trail. Once it was stable the job became mostly upkeep, so I moved on to keep learning.

    • CMS
    • Workflows
    • Roles & approvals
    • OJS
  3. Fullstack Developer

    Grovyo

    JUL 2024 – MAR 2025

    An early-stage social commerce platform for India, meant to help local workers and home-based women sell handmade goods and grow as creators. I worked across the whole product from day one: a queue system and microservices, a continuous upload service, server tuning so videos play in different qualities, the platform's own ad system for creators, and the first seller page and web-page builder. When funding stopped, the team paused the product. They are good people and we still stay in touch.

    • Node.js
    • Microservices
    • Queues
    • Uploads
    • Video quality
    • Ads

Selected work

// scroll sideways →

  • №01 — Ads

    AdSpace

    Show ads only to the right people: region rules, relevance targeting and a wallet for the money.

    region targeting · wallet · ads

  • №02 — CMS

    Journal CMS

    Three teams, one Excel trail and a WhatsApp group, replaced by one workflow that tracks who has the work.

    roles · approvals · shared data

  • №03 — Gaming

    Mind Match

    Guess what everyone else will guess. Weekly leagues, daily games and a backend that keeps every round fair.

    node.js · redis · bullmq

  • №04 — Marketplace

    Bless Me

    Booking a session with a spiritual leader shouldn't be a chore. I'm building the booking flows behind it.

    next.js · node · postgres

  • №05 — Deep links

    Deep Links

    Send people to the right screen, installed or not. Smart routing, custom domains, plans and payments.

    node.js · postgres · caddy

Writing

// notes from the build

How the work goes

// 4 steps, no magic

  1. Discovery

    Functional and non-functional requirements first, then what to build first.

  2. Architecture

    Key entities, APIs and data flow, kept simple enough to grow.

  3. Development

    Short demos, tests from week one, optimized where it counts.

  4. Launch

    Deploy, monitor, fix. I stay on after go-live.