Hello I'm Vaithiyalingam.
Frontend Developer
Based In India.

I craft high-performance web experiences that users love. From AI-powered platforms to crypto wallets and blockchain explorers — I turn complex ideas into clean, intuitive interfaces that scale.

Developer illustration

My Skills

React
Next.js
TypeScript
Remix
Firebase
GraphQL
TailwindCSS
RxJS
React Native
Shadcn/UI
Framer Motion
REST APIs

My Experience

Software Engineer - Frontend at PieLabs Inc

Own end-to-end UI, state management, and data layer for the Test Builder — where QA teams create and run automated mobile tests. Built the Live Execution Viewer that streams device screenshots at ~1 FPS during test runs. Cut dashboard load time from 8s → 5s by restructuring Firestore queries and adding route-level code splitting. Reduced monthly Firebase bill by ~60% through batched reads and RxJS stream memoization.

Nov 2024 - Present

Software Engineer at BlockTheory R&D Hub

Led frontend development for Frontier Wallet Chrome extension serving 50K+ users. Built transaction flows, token swaps, and cross-chain bridging. Architected and developed Blio blockchain explorer with modern stack — achieved 60% increase in mobile traffic and 35% lower bounce rate.

Feb 2022 - Jul 2024

Junior Developer at Apperient

First engineering role. Refactored a legacy dashboard from synchronous to async data fetching, cutting initial load from 4s → 2.8s. Built 15+ reusable React components that became the foundation of the internal UI library.

Apr 2021 - Sep 2021
About me

4+ Years Experience

About Me

I'm a frontend engineer who cares about two things: making products faster and making code maintainable. I've worked on products used by 50K+ crypto wallet users and QA teams running thousands of automated tests daily.

At PieLabs, I own the Test Builder feature end-to-end — from UI design decisions to Firestore data modeling. I reduced our Firebase costs by 60% and cut page loads from 8s to 5s. At BlockTheory, I led frontend development for the Frontier Wallet extension and architected their blockchain explorer using modern web technologies.

I make architecture decisions, not just implement tickets. When I joined BlockTheory, there were no frontend tests — I introduced Jest and covered 200+ components. When Firebase bills spiked at PieLabs, I redesigned the query patterns. I take ownership of problems, not just features.

Open to opportunities
50K+ Users Shipped
Cost Reduction Expert

My Projects

01

PIE Portal - AI QA Platform

Pie is an AI-first QA automation platform that replaces traditional scripted test suites with autonomous agents. It explores applications like a real user with vision-based testing. Teams can achieve up to 80% end-to-end coverage within minutes.

RemixRxJSFirebaseTypeScript
View Project
02

Frontier Wallet Extension

Browser-based cryptocurrency wallet supporting multiple blockchains like Ethereum, Binance Smart Chain, Polygon, and Solana. Features include sending, receiving, swapping, bridging, and buying cryptocurrencies with DeFi integration.

ReactTypeScriptTailwindCSS
View Project
03

Blio Blockchain Explorer

User-friendly blockchain explorer providing transparent transaction data. Features include contract verification, detailed wallet activity views, and a developer mode for blockchain enthusiasts to explore their transactions in detail.

Next.jsTypeScriptFramer Motion
View Project

Get In Touch

Let's talk for
Something special

I seek to push the limits of creativity to create high-engaging, user- friendly, and memorable interactive experiences.