MAHEDI HASAN HASAN

Full Stack Developer

Mumbai, Maharashtra 1+ yrs exp 84 · Excellent

About

Full Stack Developer specializing in Angular and NestJS, with hands-on experience building scalable enterprise applications in insurance and hospitality. Delivered two production systems adopted by 500+ active users, cut response times by 40% through query and indexing optimization, and automated workflows that removed 60% of manual effort. Also built AI-powered SaaS products using LLM APIs, WhatsApp automation, and payment gateways.

Skills & Expertise (32)

JavaScript Advanced

7.3/10

Years Exp

React.js Advanced

7.3/10

Years Exp

RESTful APIs Advanced

7.0/10

Years Exp

JWT Authentication Advanced

7.0/10

Years Exp

LLM API Integration Advanced

7.0/10

Years Exp

VSCODE Advanced

7.0/10

Years Exp

GitHub Advanced

7.0/10

Years Exp

Agile Development Advanced

7.0/10

Years Exp

Git Advanced

7.0/10

Years Exp

Express.js Advanced

7.0/10

Years Exp

Node.js Advanced

7.0/10

Years Exp

Google OAuth Intermediate

6.5/10

Years Exp

Typescript Intermediate

6.5/10

Years Exp

Razorpay Intermediate

6.5/10

Years Exp

RBAC Intermediate

6.5/10

Years Exp

Payment gateway integration Intermediate

6.5/10

Years Exp

Multi-tenant Architecture Intermediate

6.5/10

Years Exp

NestJS Intermediate

6.0/10

Years Exp

MySql Intermediate

6.0/10

Years Exp

Postgresql Intermediate

6.0/10

Years Exp

Angular Intermediate

6.0/10

Years Exp

Claude Intermediate

6.0/10

Years Exp

Grok Intermediate

6.0/10

Years Exp

Gemini Intermediate

6.0/10

Years Exp

Vite Intermediate

5.5/10

Years Exp

Vercel Intermediate

5.5/10

Years Exp

Query Optimization Intermediate

5.5/10

Years Exp

MongoDb Intermediate

5.5/10

Years Exp

bootstrap Intermediate

5.5/10

Years Exp

Render Intermediate

5.0/10

Years Exp

Antigravity Intermediate

4.5/10

Years Exp

pdfkit Intermediate

4.5/10

Years Exp

Work Experience

Developer

ClinicDesk

Jan 2026 - Present

Built a multi-tenant clinic management SaaS with patient records, visits, prescriptions, appointments, and billing analytics, isolating each clinic’s data in a single PostgreSQL database via clinic_id. Engineered a WhatsApp chatbot using Baileys that lets patients book appointments, check clinic timings, and receive prescriptions as auto-generated PDFs.

Developer

Storefront AI

Present - Present

Developed an AI website builder that generates storefront sites from natural language using Gemini, Grok, and Claude APIs with automatic provider fallback and chat-based refinement. Integrated Razorpay subscription billing with server-side HMAC-SHA256 signature verification, and Google OAuth 2.0 sign-in with server-side token verification.

Full Stack Developer

FGR Infotech

Dec 2024 - Jan 2026

Delivered two enterprise-grade systems, an Insurance Management System for client Lockton and Bookin, FGR Infotech’s guest house management product, adopted by 500+ active users. Owned features end-to-end, from database schema to UI, following Agile practices with cross-functional teams.