Senior Engineer

Hi, I'm Hariharan.

I build high-performance, scalable Front-end applications for e-commerce, SaaS, and enterprise platforms.

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Hariharan
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About Me

Front-end engineer with 5+ years of experience building fast, scalable React applications. I specialize in component-driven architecture, performance tuning, API integrations, and designing intuitive user experiences. I love solving complex UI problems and turning product ideas into polished interfaces.

# Highlights

  • 5+ years experience in React.js, JavaScript, TypeScript
  • Performance optimization for enterprise and e-commerce
  • Strong focus on reusable UI component systems
  • Experienced with GraphQL, REST, and modern tooling

Professional Experience

Altimetrik India Pvt Ltd

Jan 2025 – Present

Senior Engineer

Client: Samsung E-commerce Platform

Leading development of Samsung’s cart & checkout experiences, delivering global-scale performance and seamless UX.

  • Led a SPOKE-in team of 4 engineers responsible for delivering India-specific e-commerce enhancements.
  • Owned end-to-end feature delivery using Agile Scrum methodologies, managing work items through JIRA.
  • Implemented promotion banners & Trade-In pop-ups improving engagement by 18–25%.
  • Improved checkout success rates by 15% through critical UI fixes.
  • Built responsive and high-performance frontend features for checkout flows.

Lumel Technologies Pvt Ltd

May 2021 – Dec 2024

Product Developer

Developed scalable UI components and performance-optimized modules for enterprise analytics products.

  • Created reusable React component libraries improving maintainability by 60%.
  • Assisted in backend API development and debugging, gaining exposure to server-side logic and data handling.
  • Integrated GraphQL APIs for fast and scalable data loads.
  • Implemented browser-based debugging tools, cutting bug resolution time by 40%.

Verzeo EduTech

Jan 2021 – Apr 2021

React Developer Intern

Built modular React components and contributed to internal UI systems.

  • Created custom UI libraries accelerating development by 35%.
  • Improved coding standards with linting, boosting productivity by 25%.

Projects

Sync Text Editor

A real-time collaborative text editor built with Y.js, Hocuspocus, and Supabase—designed to feel instant, reliable, and seamless like a mini Google Docs.

Real-time collaboration powered by Y.js CRDTs
Persistent storage with Supabase
Multi-device editing support
Automatic conflict resolution
Full-Stack Developer

Samsung E-commerce Shopping Cart

Engineered a responsive, high-performance cart & checkout workflow for Samsung's global e-commerce ecosystem.

Optimized rendering and state management
Reduced checkout drop-offs
Improved page load speed by 20%
Frontend Engineer

ValQ – InfoBridge Integration

Enabled scenario modeling, budgeting, and analytics for Power BI using ValQ and InfoBridge.

No-code data transformation workflows
Write-back capabilities
Enterprise-grade UI integration
Frontend Developer
React
Next.js
TypeScript
JavaScript
Angular
Tailwind CSS
HTML5
Node.js
GraphQL
Redux
PostgreSQL
Git
Figma
Prisma
React
Next.js
TypeScript
JavaScript
Angular
Tailwind CSS
HTML5
Node.js
GraphQL
Redux
PostgreSQL
Git
Figma
Prisma
React
Next.js
TypeScript
JavaScript
Angular
Tailwind CSS
HTML5
Node.js
GraphQL
Redux
PostgreSQL
Git
Figma
Prisma
React
Next.js
TypeScript
JavaScript
Angular
Tailwind CSS
HTML5
Node.js
GraphQL
Redux
PostgreSQL
Git
Figma
Prisma

Let's connect !

New projects, freelance enquiry, or even a coffee?

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