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Ravi Chaudhary

Hi, I’m Ravi Chaudhary.

I’m a full-stack engineer in Noida. I’ve spent the last five years building developer tools and trading software, mostly in Go, Python, Node.js and React.

Most recently at TestMu AI (formerly LambdaTest), I built an AI accessibility engine, shipped offline mode for real iOS and Android devices, and moved slow MySQL queries over to OpenSearch. Before that I spent almost three years at LCX, a crypto exchange, where I built the trading screen from scratch.

Work

A few things I built at TestMu AI and LCX.

  1. 01 · AI · Backend

    AI Accessibility Engine

    Uses GPT to check the WCAG rules that static scanners can’t, and suggests a fix for each issue.

    5WCAG criteria judged by the model
    PythonFastAPIGoOpenAI API
    2024 — 25
  2. 02 · Real-time · Infrastructure

    Offline Mode for Real Devices

    Lets testers switch off the network on real iPhones and Android phones to see how their app behaves offline.

    E2EStream, relay, UI and API
    WebRTCNginxLuaRedis
    2026
  3. 03 · Fintech · Real-time

    Crypto Trading Interface

    The trading screen for LCX’s crypto exchange, built from scratch. Over 50,000 traders used it at peak.

    −50%Trade execution time
    ReactReduxTradingViewWebSockets
    2024
  4. 04 · Product · Browser

    Accessibility DevTools Extension

    A Chrome DevTools panel for finding accessibility issues. 3K+ users and a 4.9 rating.

    3K+Users
    Chrome MV3ReactTypeScript
    2024 — 25

Also shipped

  • Accessibility scan scheduling

    Recurring scans with login flows, tunnels and sitemaps up to 10K URLs. It runs 1K+ scans a month.

  • OpenSearch-backed listing API

    Moved the test-session listing off unindexed MySQL scans and onto OpenSearch, so it stays fast as data grows.

  • macOS VoiceOver in remote sessions

    Got 14 shortcut families working by injecting system events inside the Mac VM.

  • Native mobile accessibility SDKs

    Two SDKs that bring accessibility testing to native apps, with VoiceOver and TalkBack automation.

  • Platform-wide dark mode

    Built on my own. 10+ apps and 15+ SDKs use the theme tokens.

  • KYC onboarding & ops automation

    KYC with sanctions screening, plus scheduled jobs that saved 15+ engineering hours a week.

Experience

TestMu AI

formerly LambdaTest

2024 — 2026Noida
  1. Senior Software Engineer (SMTS)

    2026

    Offline mode for real devices, VoiceOver in remote sessions, dark mode for the whole platform and faster listings on OpenSearch.

  2. Promoted
  3. Software Engineer (MTS)

    2024 — 2026

    Owned the accessibility product in its early days. Built the AI engine, the DevTools extension, scheduling and the mobile SDKs.

LCX Technologies

crypto exchange

2021 — 2024Gurugram
  1. Software Development Engineer

    2024 · Exchange team

    Built the trading interface and added WebSocket push between the backend and frontend.

  2. Promoted
  3. SDE (Associate)

    2021 — 2023 · Accounts team

    KYC onboarding with sanctions screening, and backend automation.

Side projects

Side project · 2026

Frontend Platform Engineering reference

A single-page reference I put together on what a frontend platform engineer needs to reason about: web protocols, security, performance, bundling, testing and operations. Each topic covers what it is, an example, the trade-offs and the follow-up questions.

15 sections~100 topics14 SVG diagramsNo build step, works offline

LeetCode · as of Oct 2026

457

problems solved

  • Easy191
  • Medium217
  • Hard49
View profile

Tools

Languages

GoPythonTypeScriptJavaScript

Backend

Node.jsFastAPIRESTWebSocketsWebRTCOpenAI API

Data

PostgreSQLMySQLMongoDBRedisOpenSearch

Frontend

ReactReduxChrome extensions (MV3)

Infra

AWSDockerKubernetesNginxDatadog

AI tooling

Claude CodeMCP serversagentic workflows