BackMaitrish.

4 years · 4 companies

Every line I've
shipped.

Full engineering history — system decisions, impact numbers, and the products I built. Not a summary.

Aug 2025 — Present

CheckMe Commerce Pvt. Ltd.

Senior Frontend Engineer · Founding Engineer · Ahmedabad, GJ

Built the entire Experience Commerce OS from zero — a platform that lets global brands like SharkNinja and EcoFlow offer virtual and physical product demonstrations to consumers, with end-to-end booking, CRM, partner management, and payment flows.
20K+
Customers
6,000+
Virtual Demos
3,000+
Physical Demos
25%+
Conversion Rate

Platform Architecture

Multi-tenant SaaS with feature flags, RBAC across 9 role types, 7 order types (Virtual Demo, In-Store Demo, Physical Installation, Self-Service, Training, Consultation, Rental), all on a 60+ table PostgreSQL schema.

AWS Infrastructure

Full AWS setup in ap-south-1: ALB with SSL termination, WAF rules for DDoS/SQLi/XSS, Multi-AZ RDS PostgreSQL, S3 + CloudFront, SES for transactional emails, Route53 — provisioned without a DevOps team.

Embeddable SDK

CDN-distributed single-JS-file SDK embeddable on any website. Supports 5 embed modes (inline widget, modal, floating button, checkout overlay, standalone page) with HMAC-signed session-token auth.

WebRTC Demo Infrastructure

Integrated ZegoCloud for virtual demos — room creation, participant management, recording, and quality monitoring across 6,000+ live sessions.

Brand Onboarding

Led technical onboarding for SharkNinja, Nester, Tiron, EcoFlow — mapping product catalogues, SKUs, demo scripts and CDE training into the platform. Achieved 25%+ conversion vs industry average of 8–12%.

Key Contributions

  • Sole engineer for the first 4 months — architected the entire platform from scratch across web, API, and cloud infrastructure.
  • Built 10+ Next.js frontends and 5 FastAPI microservices on PostgreSQL Multi-AZ RDS (60+ tables), covering 7 order types and RBAC across 9 role types.
  • Onboarded global brands SharkNinja, Nester, Tiron, EcoFlow — achieved 25%+ demo-to-purchase conversion rate.
  • Engineered ZegoCloud WebRTC video infra, CDE training LMS with YouTube sync, and multi-channel notifications.
  • Designed full AWS infra: ALB, WAF with DDoS/XSS/SQLi rules, Multi-AZ RDS, S3, SES, Route53.
  • Built CDN-distributed embeddable SDK (single JS file) with 5 embed modes and session-token auth.

Stack

Next.js 16FastAPIPostgreSQLAWS (ALB, WAF, RDS, S3, SES)ZegoCloud WebRTCRazorpayDockerGitHub ActionsZustandTailwindCSSSQLAlchemyJWT

Platforms Built

chqme.com
ChqMe Platform screenshot 1
1 / 4
ChqMe PlatformVisit ↗
experienceos.chqme.com
ExperienceOS screenshot 1
1 / 6
ExperienceOSVisit ↗
book.chqme.com
ChqMe Booking screenshot 1
1 / 6
ChqMe BookingVisit ↗
ops.chqme.com
ChqMe Ops screenshot 1
1 / 6
ChqMe OpsVisit ↗
experience.chqme.com
Experience Portal screenshot 1
1 / 3
Experience PortalVisit ↗
Jul 2024 — Aug 2025

MathonGo

SDE-1 · Frontend Engineer · Bengaluru, KA

Joined as frontend engineer on a 2.5M-student EdTech platform for JEE/NEET prep. Led a complete infrastructure overhaul, built viral tooling, and shipped measurable growth across the platform.
1M→2.5M
Student Growth
400K
Users in 48hrs
93%
Faster Builds
95+
Lighthouse Score

CRA → Vite + TurboRepo

4-minute cold builds on aging CRA (Node 16). Migrated to Vite + TurboRepo — cold builds under 17s (93% faster), page loads -50%, bundle -21%. Zero downtime, no breaking changes.

JEE Main College Predictor

Sole front-end engineer for the tool. Aggressive SEO — structured data, Core Web Vitals tuning, dynamic OG images. 400K users in 48 hours, ranked #2 on Google — fastest traffic event in MathonGo history.

Quizrr Platform Overhaul

Rebuilt test-taking platform from ground up. Cut 11,000 lines of legacy code. Rebuilt freemium gating, Test Analysis dashboard, Onboarding, and Question Review. Lighthouse went from ~55 to 95+.

A/B Testing & Growth

4 WebEngage A/B experiments — different CTA copy, onboarding steps, test completion nudges. Results: 28% rise in test completions, 35% rise in Test Analysis engagement.

Key Contributions

  • Proposed and led migration from CRA (Node 16) to Vite + TurboRepo — 93% faster builds, 50% faster page loads, 21% smaller bundle.
  • Frontend overhaul directly contributed to platform growth from 1M → 2.5M students.
  • Built JEE Main College Predictor — 400K+ users in 48 hours, ranked 2nd on Google Search.
  • Integrated WebEngage A/B testing — 28% rise in test completions, 35% rise in Test Analysis engagement.
  • Achieved 95+ Lighthouse scores across Performance, SEO and Best Practices.

Stack

ReactNext.jsViteTurboRepoShadcn/uiZustandReact QueryWebEngageTailwindCSSTypeScript

Platforms Built

app.quizrr.in
Quizrr by MathonGo screenshot 1
1 / 6
Quizrr by MathonGoVisit ↗
May 2023 — Aug 2023

Codebuddy Pvt. Ltd.

React Developer · Kolkata, WB

Agency role delivering two client-facing production platforms in a 3-month contract.

Freelance Marketplace

User profiles, gig listings, search/filter, proposal system, payment integration. Delivered in 6 weeks.

Car Rental Application

Booking system with availability calendar, multi-step checkout, admin panel. TTFB reduced from 1.3s to 750ms via Next.js SSR + SWR caching.

Engineering Practices

6-hour PR turnaround, 5+ production deploys/week with zero rollbacks. SWR caching strategy eliminated stale data across both platforms.

Key Contributions

  • Delivered two production client platforms in 3 months — Freelance Marketplace and Car Rental App.
  • Next.js SSR + SWR caching: 45% faster load times, zero stale data. TTFB reduced from 1.3s to 750ms.
  • Maintained 6-hour PR turnaround with 5+ production deploys per week.

Stack

Next.jsReactSWRTailwindCSSTypeScriptREST APIs
May 2022 — May 2023

FWC Inc.

UI Developer · Bengaluru, KA

First professional role — built an enterprise HR SaaS product end-to-end over a year, including full authentication, RBAC, and real-time dashboards.

HR SaaS Dashboard

3 role-specific dashboards with 20+ screens and 40+ API integrations — leave management, payroll, recruitment pipeline, attendance, performance reviews.

RBAC System

Client-side RBAC with permission matrices per role. Reduced role-based bugs by 45%, made adding new roles safe.

Real-Time Visualisations

8+ Chart.js charts with Firebase real-time listeners for headcount, attrition, recruitment funnel, and performance distribution — all without page refresh.

Performance

Code splitting, lazy loading, image optimisation brought page load from 3.4s to 1.8s (47% improvement).

Key Contributions

  • Built HR SaaS frontend — 3 dashboards (Admin, Manager, Recruiter), 20+ screens, 40+ REST API integrations.
  • RBAC implementation reduced role permission bugs by 45%. Page load optimised from 3.4s → 1.8s.
  • 8+ real-time Chart.js + Firebase data visualisations for company performance tracking.

Stack

ReactReduxChart.jsFirebaseREST APIsCSS ModulesJavaScript

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