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Hey there, I'm

Himanshu Singla

Software Engineer — Frontend @ Trampoline (FableRoom)

Frontend Software Engineer with 3.5+ years building production-grade web and mobile applications at fast-growing startups. I specialize in the React / Next.js ecosystem with measurable impact across performance, SEO, payments, and lead generation — and I'm comfortable across the full stack with Node.js, Express, and MongoDB.

3.5+

Years of Experience

50k+

Monthly Users Impacted

$70k+

Monthly Transactions

Himanshu Singla

Experience

My professional journey so far

  • Migrated the e-commerce storefront to a lead-gen platform for 50k+ monthly users — drove +35% leads, +10% MoM revenue, and -18% bounce rate within 6 weeks of launch.
  • Resolved Core Web Vitals failures (LCP 3.1s to 1.6s, CLS 0.22 to 0.04, INP under 100ms) with image CDN, lazy loading, critical CSS inlining, and route-based code-splitting; mobile Lighthouse 54 → 91.
  • Architected a Sanity CMS blog pipeline with ISR, webhooks, and dynamic XML sitemaps; organic traffic +45% in 3 months and publish cycle cut from 2 days to 4 hours.
  • Integrated Stripe payments with idempotent retries and mobile-optimized checkout — cart abandonment -30%, processing $70k+/month with zero reconciliation errors.
  • Built ERP/QC dashboards with AG Grid, Recharts, and PDF/Excel export for 100+ ops staff, replacing 3 Excel workflows and saving about 8 hours/week per team.
  • Delivered a React Native (Expo) field-inspector app with offline sync and barcode scanning — report turnaround time down 60%.
  • Wired GTM, GA4, Klaviyo, and Shopify events for analytics; integrating Gemini API for product recommendations targeting +8% AOV and supporting +20% ROI on paid campaigns.
Chaudhary Devi Lal University

Chaudhary Devi Lal University

Bachelor of Computer Applications (BCA)

2018 – 2021Sirsa, Haryana

Technical Skills

Technologies I use to bring ideas to life

Languages & Frameworks

TypeScript
JavaScript (ES6+)
HTML5
CSS3
React
Next.js
Redux Toolkit
Zustand
Tailwind CSS
shadcn/ui
MUI
GSAP
React Native
Expo

APIs & Data

REST APIs
GraphQL
React Query
Webhooks
WebSockets
JWT
Node.js
Express.js
MongoDB
MySQL
SQLite
Redis

AI & Integrations

OpenAI API
LangChain
Stripe
Shopify
Sanity CMS
Directus
Recharts
AG Grid

Testing & Tools

Jest
React Testing Library
Playwright
Lighthouse CI
Git / GitHub Actions
Vercel
Docker
Vite
Expo EAS

Performance & UX

Core Web Vitals
SEO
Accessibility (WCAG 2.1)
PWAs
A/B Testing
GTM
GA4

Projects

A selection of things I've built

QKart Express

QKart Express

Full-stack e-commerce platform with end-to-end authentication, shopping cart, and checkout flow built in React.js with a mobile-responsive UI and REST API integration.

React.jsNode.jsExpress.jsMUIREST APIs
QGenius

QGenius

AI-powered DSA quiz platform using the OpenAI API with dynamic question generation, adaptive difficulty, real-time feedback, and streak tracking. Attracted 2k+ organic users.

React.jsNode.jsExpress.jsChakra UIOpenAI API