Maitrish
Mukherjee
FULL STACK FOUNDING ENGINEER & ARCHITECT
Founding Engineer building a E-commerce platform from zero - 10+ apps, 5 microservices, AWS infrastructure. Previously scaled MathonGo from 1M to 2.5M students. I don't ship features. I build and own product engineering end-to-end.
Where I've Shipped
CheckMe Commerce Pvt. Ltd.
Full Stack (Founding) Engineer
- ◆React.js Frontend: Architects 10+ Next.js (14–16) production frontends solo, consumer booking, admin console, & partner portal,using Next.js microfrontends, Shadcn/ui, Redux, TailwindCSS, TypeScript, serving 30,000+ customers at 25%+ demo-to-purchase conversion.
- ◆Node.js & Python Backend & REST API Design: Engineers 5 FastAPI microservices along with 120+ RESTful APIs with SQLAlchemy covering demos, CRM, partner ops, & admin,with ZegoCloud & LiveKit WebRTC integration, Razorpay payment pipelines, & multi-channel notifications (SMS, WhatsApp, SES email).
- ◆SQL & NoSQL Database Design: Manages & designs 60+ table PostgreSQL schema on Multi-AZ RDS covering 7 order types, multi-stage status tracking, RBAC across 9 role types, OTP auth, Razorpay payment verification, & multi-tenant SaaS mode via feature flags.
- ◆AWS Cloud Infrastructure: Owns AWS production infra in ap-south-1, ALB routing across 5 services, WAF with DDoS/XSS/SQLi rules, Multi-AZ RDS, EC2 for servers, S3 for recordings & exports, & Route53 DNS.
MathonGo
SDE-1
- ◆React.js Frontend: Led CRA to Vite/TurboRepo migration (93% faster builds, 50% faster loads, 21% smaller bundle). Overhauled test-taking and analysis flows cutting 16,000 lines of legacy code. Shipped JEE College Predictor to 400K+ users in 48 hours. Drove 28% test completion lift via WebEngage A/B testing. Hit 95+ Lighthouse scores, contributing to platform growth from 1M to 2.5M students.
- ◆REST API Design: Integrated WebEngage event tracking and A/B testing APIs across onboarding and test flows, driving a 28% increase in test completions and 35% increase in Test Analysis engagement on a 2.5M-user platform.
- ◆Node.js & Python Backend: Designed and developed 20+ REST APIs across test submission, question journey tracking, performance analysis, and score potential flows; collaborates with backend on RESTful API contracts for attempt state, freemium gating, and real-time leaderboard data via Redis.
- ◆SQL & NoSQL Database Design: Worked with MongoDB collections for test analysis, question journey, and mistake tracking. integrated Redis-backed leaderboard APIs and designed client-side state structures mirroring attempt, score, accuracy, and time-per-question data.
Codebuddy Pvt. Ltd.
React Developer
- ◆React.js Frontend: Delivered 2 production client platforms in 3 months using Next.js SSR and SWR caching, 45% faster load times with zero stale data issues.
- ◆Node.js & Python Backend & REST API Design: Built 20+ REST APIs for a car rental platform and freelancing portal, covering end-to-end CRUD for listings, bookings, user auth, and transactions using Node.js routes.
FWC Inc.
UI Developer
- ◆React.js Frontend: Built HR SaaS frontend with RBAC, 3 distinct dashboards (Admin, Manager, Recruiter), 20+ screens, and real-time Chart.js + Firebase visualizations; cut page load from 3.4s to 1.8s.
- ◆Node.js & Python Backend & REST API Design: Developes 30+ REST APIs across Admin, Manager, and Recruiter dashboards for a multi-role HR SaaS platform serving enterprise clients.
Live in production.
CheckMe Web Platform
Consumer Experience Platform
Built the consumer web experience with end-to-end product discovery, browsing, and account management flows. Implemented demo and installation booking journeys, including confirmation flows, payment integration, and customer history tracking. Integrated SEO and analytics systems to drive user acquisition, improve visibility, and optimize conversion funnels.
ExperienceOS
B2B Brand Operations Dashboard
Operations dashboard for brand managers — demo pipeline, installation tracking, CDE performance analytics, partner network management, and sales reporting across virtual and physical channels. Delivers dashboards and admin tooling to streamline demo and installation pipelines, enabling efficient cross-team collaboration and self-service workflows.
Booking Platform
Consumer Demo Booking Platform
Consumer-facing web experience with end-to-end product discovery, browsing, and account management flows. Implements demo and installation booking journeys, including confirmation flows, payment integration, and customer history tracking. Integrated SEO and analytics systems.
Operations Dashboard
Internal Brand Operations Dashboard
Built our internal operations dashboard to handle everything internally for all our brands and brand operations. Streamlined operations for internal teams, enabling efficient management of leads, attendance tracking, and installation coordination. Implemented secure authentication and role-based access control (RBAC) to ensure scalable, permission-driven system access.
Experience Portal
Live Virtual Demo Room
Consumer-facing virtual demo portal powered by ZegoCloud WebRTC — live video room creation, participant management, real-time interaction, and session recording for 6,000+ virtual demo sessions.
Quizrr by MathonGo
JEE/NEET Test-Taking Platform
MathonGo's test platform for 1M+ JEE aspirants. Developed and maintained the platform using React.js, JavaScript, Tailwind CSS, and Bootstrap. Overhauled key modules like Test Application and Test Analysis, improving UX and enabling advanced performance tracking. Integrated real-time analytics dashboards for actionable insights on student performance.
What I Build With
React.js Frontend
React
Next.js 14–16
Vite
TurboRepo
TypeScript
TailwindCSS
Shadcn/ui
Framer Motion
Zustand
Redux Toolkit
React QueryNode.js & Python Backend
Node.js
FastAPI
Python
Pydantic
JWT
Microservices
System Design
HLD
LLDREST API & Integrations
REST APIs
SQLAlchemy
Razorpay
ZegoCloud WebRTC
LiveKit
WebEngage
Microsoft Clarity
Google Maps
SESSQL & NoSQL Database Design
PostgreSQL
MongoDB
Redis
SQL
MySQL
NoSQL
RDS
Multi-AZ
Feature Flags
RBACAWS Cloud Infrastructure
AWS EC2
ALBRDS
S3
CloudFront
WAFSES
Route53
IAM
VPC
ap-south-1
DDoS
CDN
S3 RecordingsDevOps & CI/CD Pipelines
Docker
GitHub Actions
CI/CD
Self-Hosted Runners
EC2 Deployments
Release ManagementHave a project in mind?
I'm open to full-time Full Stack Founding Engineer & Architect roles, founding engineer positions, and interesting contract work.