Available for new roles · Hyderabad / Remote

I build fast,
scalable React
interfaces._

Senior Frontend Engineer with 4.5+ years shipping production-grade Fintech, payments & SaaS apps in React, TypeScript and Next.js. Cut build time from ~4 min to < 1 min, cold start ~45s to < 10s, and reduced unnecessary re-renders by ~40% via memoisation and code-splitting.

Hyderabad, India
4+ yrs experience
React · TypeScript · Redux
// NOWSr. Frontend, Coderower
// FOCUSReact / Next.js / TS / Perf
// BASEDHyderabad
// SINCE2021 — 4.5 yrs shipping
5+
Production apps
shipped end-to-end
~75%
Faster CI builds
after Vite migration
~40%
Fewer re-renders
via memoisation & hooks
1.2K+
Daily payment events
powered by my dashboards
React TypeScript Next.js Redux Toolkit Vite Tailwind Playwright Jest Storybook GitHub Actions Firebase Material UI React TypeScript Next.js Redux Toolkit Vite Tailwind Playwright Jest Storybook GitHub Actions Firebase Material UI
SELECTED WORK · 2021–2025

Five products. Real customers. Measurable impact.

A range of SaaS, Fintech, and consumer apps where I owned the frontend — architecture, state, performance, and UX handoff.

SaaS · Onboarding

Page Pilot

01 / 05

Product-onboarding platform letting non-technical teams design in-app tours, tooltips, and banners — no engineering required.

  • Built no-code UI configuration for tours, tooltips and banners that cut eng dependency by ~60%, letting product teams ship onboarding independently.
  • Architected the Demo Creation feature with lazy-loaded bundles — +25% activation and −35% initial bundle size.
  • Managed multi-step overlay flows with Redux Toolkit + memoised hooks, keeping interaction response under 100ms.
ReactTypeScriptRedux ToolkitSPAFigma
Welcome to Page Pilot 👋
Step 2 of 5
Configure → Launch
Fintech · Payments

Addpay

02 / 05

Digital payment platform — real-time dashboards used by ops teams to monitor payment health 24/7.

  • Built real-time dashboards monitoring 1,200+ daily payment events with < 2s refresh via WebSocket integrations.
  • Integrated third-party payment APIs with optimistic UI — −30% perceived transaction latency.
  • Hit 85%+ unit-test coverage on payment flows using Jest + React Testing Library.
ReactTypeScriptReduxREST
Fintech · Bill Payments

Payswish

03 / 05

Mobile-first bill payments app — utility, mobile, and DTH recharges.

  • Built accessible multi-step payment flows with validation + error recovery — −20% drop-off on recurring users.
  • Maintained reliable UX under high-frequency interactions via memoisation, lazy loading and Suspense boundaries.
ReactReduxFirebaseRWD
Crypto · London-based client

CCMT

04 / 05

Crypto mining application — real-time dashboards with live mining stats and earnings.

  • Real-time dashboards on Firebase listeners supporting 500+ concurrent users with live mining & referral metrics.
  • Designed a reusable Storybook component library for dynamic data displays — −15% UI bug reports.
ReactReduxFirebaseWeb Perf
Health & Fitness

Pulse

05 / 05

Session booking app — connecting users with trainers across time zones.

  • Booking flow with real-time trainer availability + time-zone management across geos.
  • Trainer profile / listing components with filters (expertise, availability, ratings).
  • Integrated calendar modules for bookings and rescheduling.
React.jsJavaScriptRWD
FROM THE WORK
~75%
faster builds after Vite migration (4 min → < 60 sec)
~30%
less feature-dev effort with modular component libraries
EXPERIENCE

Four years in the trenches.

Oct 2021 – Present REMOTE · HYDERABAD

Sr. Frontend Developer

Coderower Software Pvt. Ltd.

Owning the frontend on multiple Fintech & SaaS products across 4.5 years — from CRA→Vite migration to designing reusable component libraries with design tokens, building SSR/SSG with Next.js, and reaching 80%+ test coverage on critical modules. Mentor 2 juniors, lead reviews, and partner closely with UI/UX in Agile sprints.

  • Led CRA → Vite migration, cutting build time ~75% and CI spend.
  • Architected reusable component libraries across 4 apps, –30% dev effort.
  • Optimised state-heavy screens with useMemo, useCallback, React.memo.
  • Built mobile-first interfaces tested across 5+ browsers and devices.
  • Set up CI/CD pipelines, led code reviews, enforced SOLID.
  • Mentor jrs & shipped via GitHub Copilot-assisted workflow.
2022 VISAKHAPATNAM

B.Tech · Mechanical Engineering

Chaitanya Engineering College · JNTU-K

Graduated 2022. Self-taught into frontend during final year.

75%
faster builds
(Vite migration)
30%
less feature
dev effort
5
production apps
shipped & maintained
1.2K+
daily payment events
powered by Addpay UI
THE TOOLBOX

My stack, grouped by what it does.

I pick tools that survive contact with production — and the team that has to maintain it after me.

// Languages

JavaScript (ES6+) TypeScript HTML5 CSS3

// Frontend

React.js Next.js React Hooks Redux Toolkit Context API SPA

// Styling

Tailwind CSS Material-UI Bootstrap Responsive Web Design

// Performance

Lazy Loading useMemo useCallback React.memo Web Vitals

// Testing

Playwright Jest React Testing Library Unit / E2E

// Build & DevOps

Vite Webpack CI/CD Git / GitHub Bitbucket

// APIs & Data

RESTful APIs Firebase State Management

// Workflow

GitHub Copilot Figma (handoff) VS Code Agile / Scrum

// Domains

SaaS Fintech Payments Onboarding
// LET’S WORK TOGETHER

Have a hard
frontend problem?

k.kushalsingh0405@gmail.com
linkedin.com/in/kushalsingh45 +91 8464 987 674 Download resume