Zeel Shah — Staff Frontend Engineer

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Experience

2014 — present

May 2025 — Sept 2026

Staff Frontend Engineer · Lightup Data

Sole frontend architect for the platform — built the Energy design system (48 components), redesigned the monitor page end to end, and shipped the LLM management surface (full CRUD). Led a full modernization to React 19, Ant Design v6, and Vite with route-level code splitting and RTK Query, cutting initial-load payload by 45%.

Oct 2024 — May 2025

Mobile Engineer (Part-time) · Toast

Built features for the Toast mobile app and shipped an iOS app in React Native, taking it through App Store review to release.

Nov 2020 — Sept 2024

Senior Software Engineer, Frontend · Tekion

Led CRM module development end to end — planning, scrum facilitation, and cross-functional coordination. Built the CRM Reports module from scratch, contributed to the Template Builder in React, and shipped mobile features across 1.5+ years of React Native work.

May 2019 — Oct 2020

Software Engineer 2, Frontend · Swiggy

Built the Swiggy Super landing page with server-side rendering on Express.js; developed and maintained web features in React and TypeScript following TDD practices.

Oct 2017 — May 2019

Member of Technical Staff · Qubole

Integrated Google Cloud support into Qubole's data platform using Ruby on Rails and JavaScript.

Oct 2015 — Oct 2017

Product Engineer, Frontend · Sprinklr

Migrated the publishing module from a Backbone MVC architecture to React, maintaining the legacy stack through the transition.

Jan 2014 — Sept 2015

Software Developer, Full Stack · Aspiring Minds

Designed a normalized question-bank database in MySQL and built internal tooling with PHP and Python.

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Case Studies

Lightup Data · Performance & migration

From one 7.3 MB bundle to 141 chunks

smaller initial load: 45%
route-level chunks: 141
React upgrade: 16 → 19

Situation: The app shipped as a single 7.3 MB JavaScript bundle on a legacy stack (React 16.14, Ant Design v4, Create React App with Webpack), so every visit downloaded the entire product up front.
What I did: As the sole frontend architect, I led a full modernization: React 16.14 to 19, Ant Design v4 to v6, and CRA/Webpack to Vite. I added route-level code splitting so each page loads only the code it needs, and moved data fetching to RTK Query to unify caching and request handling.
Result: The single bundle became 141 chunks and the initial-load payload dropped by 45%, from 2,589 KB to 1,421 KB gzipped, on an up-to-date React 19 and Vite stack.

React 19ViteCode splittingRTK QueryAnt Design v6

Lightup Data · Design systems

Energy: one design system for the whole product

components: 48
built from scratch: 9
frontend engineers: 2

Situation: A two-person frontend team owned the entire product surface, so building UI quickly and consistently depended on shared, well-documented building blocks.
What I did: I built and maintained the Energy design system: defined shared component APIs and composition patterns, authored 9 components from scratch, and documented how to use them.
Result: A 48-component system that standardized the UI across the application and gave every new screen a shared, documented starting point.

Design systemsReactComponent APIsAnt DesignDocumentation

Tekion · Ownership & delivery

Owning Tekion's CRM module end to end

promoted in Apr 2022: Senior
React Native alongside web: 1.5+ yrs

Situation: Tekion builds the Automotive Retail Cloud (ARC), a platform for car dealerships. I worked on its CRM module, first as Software Engineer 2 and then as Senior Software Engineer.
What I did: I owned the CRM module end to end: planned the work, ran the scrum, coordinated across functions, and gave product teams delivery estimates they could rely on. I built the CRM Reports module for web from scratch, contributed to the Template Builder in React, and shipped mobile features in React Native.
Result: Promoted from Software Engineer 2 to Senior Software Engineer in April 2022 for consistently owning delivery of the CRM module.

ReactReact NativeCRMReportingScrum

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Skills

ReactTypeScriptReact NativeJavaScriptNext.jsDesign SystemsRedux / Redux ToolkitRTK QueryServer-Side RenderingAnt DesignViteNode.jsNest.jsCSSTailwind CSSHTMLFirebasePrompt EngineeringClaude Code / Cursor / Copilot

Staff Frontend Engineer · Bangalore, India

Building web products that are fast, scalable, and dependable.

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