entering the universe
Abhishek Kumar

Senior Frontend Engineer · React/TypeScript · Microfrontends

The systems that
payments run on.

I'm Abhishek Kumar — a Senior Frontend Engineer with 4+ years at Razorpay, driving frontend architecture for the reconciliation platform: microfrontend architecture, design-system migrations, and AI-assisted developer tooling across 10+ consuming teams.

  • 4+years at Razorpay
  • 10+teams served
  • 500+files migrated
Explore the work Résumé

scroll to travel ↓

01 — Razorpay · Senior Frontend Engineer · Jul 2024 – Present

Reconciliation,
re-architected.

  • Architected the Recon-SaaS frontend from the ground up as a microfrontend platform with independent per-surface build and deployment — cutting build-to-production time ~50% and unblocking parallel development.
  • Built a case-management system with RBAC — maker-checker approvals, scroll-synced split-screen diff, and virtualized 10K+ record grids — cutting manual reconciliation effort by 20%.
  • Shipped the FinOps reconciliation dashboard 0→1 (manual & 3-way matching, escrow tagging, report generation) with full unit + Playwright E2E coverage.
  • ~50%build-to-prod time ↓
  • 20%less manual recon
  • 10K+record grids
  • React
  • TypeScript
  • Microfrontends
  • Module Federation
  • Zustand
  • AG Grid

02 — Razorpay · Platform & Leadership

Design systems,
AI tooling, direction.

  • Led the Blade v12 design-system migration across a live 500+ file admin app with no feature freeze — codemods for mechanical rewrites, hand-resolved ambiguous APIs — shipping a 20% smaller bundle with zero teams blocked.
  • Built internal AI developer tooling: an MCP-server agent platform automating reconciliation-workspace onboarding and incident triage — onboarding from 7 days to 30 minutes.
  • Set frontend direction for the recon platform: authored the design docs behind its two largest re-architectures, primary on-call for frontend incidents, and mentor 4 engineers across two pods.
  • 20%smaller bundle
  • 7d → 30monboarding
  • 4engineers mentored
  • Design Systems
  • Blade v12
  • MCP / AI tooling
  • Codemods
  • On-call

03 — Uniqode (Beaconstac) · Frontend Developer · Aug 2022 – Jul 2024

Design system &
web performance.

  • Built the Ohana Design System with the design team — cutting design inconsistencies by 90% and accelerating feature implementation across product teams.
  • Migrated legacy flows (QR generator, schedule-demo, pricing) to Next.js with Datadog-backed testing — reducing production breakage by 60%.
  • Improved Core Web Vitals (LCP, CLS, FCP) across surfaces serving 100K+ monthly visitors; contributed to the Beaconstac→Uniqode rebrand and hardened CSP against XSS.
  • 90%fewer design inconsistencies
  • 60%less prod breakage
  • 100K+monthly visitors
  • React
  • Next.js
  • Design Systems
  • SCSS
  • Datadog
  • Core Web Vitals

04 — Projects

MoneyWise —
a frontend platform.

  • Authored a token-based design system (@mw/ui) and a frontend observability package (error reporting, web-vitals RUM → Grafana) adopted by 6 independently deployed microfrontends across 61 routes behind an nginx host shell.
  • Ran performance as a system: CI bundle budgets with Lighthouse audits per deploy, offline-first flows (service-worker cache, offline mutation queue), and a feature-flag SDK with percentage rollouts and sticky bucketing.
  • 6microfrontends
  • 61routes
  • Offline-first
  • React
  • TypeScript
  • Vite
  • Kubernetes

05 — Let's talk

One connected
system.

Open to senior frontend & frontend-platform roles.

B.Tech CSE, Bakhtiyarpur College of Engineering · CGPA 8.25  ·  Tesla Award nomination (Blade v12) · 4th of 200+ teams, Razorpay Hackathon

Email LinkedIn GitHub Résumé

© Abhishek Kumar · built with Three.js

Abhishek Kumar

Senior Frontend Engineer · React/TypeScript · Microfrontends · Design Systems

abhishek022kk@gmail.com · linkedin.com/in/abhishek0810 · github.com/abhishekkumar08 · Résumé PDF

Summary

Senior Frontend Engineer with 4+ years at Razorpay driving frontend architecture for the reconciliation platform: microfrontend architecture, design-system migrations, and AI-assisted developer tooling across 10+ consuming teams. Strong in performance, accessibility, testing, and frontend platform engineering, with depth in the payments domain.

Experience

Senior Frontend Engineer · Razorpay

Jul 2024 – Present

React · TypeScript · Microfrontends · Module Federation · Zustand · React Query · AG Grid

  • Architected the Recon-SaaS frontend from the ground up as a microfrontend platform with independent per-surface build and deployment, cutting build-to-production time ~50% and unblocking parallel development.
  • Led the Blade v12 design-system migration across a live 500+ file admin app with no feature freeze — codemods for mechanical rewrites, hand-resolved ambiguous APIs — shipping a 20% smaller bundle with zero teams blocked.
  • Built a case-management system with RBAC (maker-checker approvals, scroll-synced split-screen diff, virtualized 10K+ record grids) that cut manual reconciliation effort by 20%.
  • Built the FinOps reconciliation dashboard 0→1 (manual & 3-way matching, escrow tagging, report generation) and a merchant-dashboard microfrontend for international payments, settlements and invoicing with React Query and full unit + Playwright E2E coverage.
  • Built internal AI developer tooling — an MCP-server agent platform automating reconciliation-workspace onboarding and incident triage, cutting onboarding from 7 days to 30 minutes.
  • Set frontend direction for the recon platform: authored the design docs behind its two largest re-architectures, primary on-call for frontend incident response, and mentor 4 engineers across two pods.

Frontend Developer · Uniqode (formerly Beaconstac)

Aug 2022 – Jul 2024

React · Next.js · Design Systems · SCSS · Datadog · Core Web Vitals

  • Built the Ohana Design System with the design team, cutting design inconsistencies by 90% and accelerating feature implementation across product teams.
  • Migrated legacy flows (QR code generator, schedule-demo, pricing) to Next.js with comprehensive Datadog-backed testing, reducing production breakage by 60%.
  • Improved Core Web Vitals (LCP, CLS, FCP) across product surfaces serving 100K+ monthly visitors; contributed to the Beaconstac→Uniqode rebrand and hardened Content Security Policy against XSS.

Projects

MoneyWise — Frontend Platform for a Personal Finance Suite

React · TypeScript · Vite · Kubernetes
  • Authored a token-based design system (@mw/ui) and a frontend observability package (error reporting, web-vitals RUM to Grafana) adopted by 6 independently deployed microfrontends across 61 routes behind an nginx host shell.
  • Ran performance as a system: CI bundle budgets with Lighthouse audits per deploy, offline-first flows (service-worker cache, offline mutation queue), and a feature-flag SDK with percentage rollouts and sticky bucketing.

Technical Skills

Languages
TypeScript, JavaScript (ES6+), HTML5, CSS3, SCSS, SQL
Frameworks & Libraries
React.js, Next.js, Redux Toolkit, React Query, Zustand, Tailwind CSS, Storybook, AG Grid, Recharts, Node.js, Jest
Frontend Platform
Microfrontends, Module Federation, Design Systems, Design Tokens, Nx / Turborepo, Webpack, Vite, Gulp, WebSockets, Service Workers, Offline-First, Feature Flags
Testing & Quality
Jest, React Testing Library, Playwright, Axe, k6, Visual Regression Testing, CI coverage gates
Performance & A11y
Core Web Vitals, RUM, Lighthouse CI, Performance Budgets, code splitting, WCAG, SEO
Tooling & DevOps
Docker, Kubernetes, GitHub Actions, CI/CD, Prometheus, Grafana, AI/MCP tooling

Education & Recognition

B.Tech, Computer Science Engineering — Bakhtiyarpur College of Engineering

2018 – 2022 · CGPA 8.25

Tesla Award nomination for the Blade v12 migration · 4th of 200+ teams in a Razorpay Hackathon.