Mahadeb Mondal – Full-Stack MERN & AI Developer

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Professional Profile

Results-driven Full-Stack & MERN Developer with 5+ years of experience architecting scalable web applications, enterprise-grade B2B platforms, and AI-integrated digital products. Currently engineering high-performance systems as a MERN Fullstack Developer at Kam Global for Digital AI & Media Solutions Pvt. Ltd. Strong command over modern JavaScript frameworks (React.js, Node.js, Express.js) alongside battle-tested enterprise backends (Core PHP, MongoDB, MySQL). Proven track record in designing secure REST APIs, role-based access control (RBAC), UPI/wallet payment workflows, and automated LLM API integrations.

🚀 MERN Stack Architecture 🤖 OpenAI & Gemini AI Integrations 💳 Fintech & Wallet Systems 📡 Media Platform Dev 🔐 JWT & Granular RBAC ⚡ Database Optimization

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End-to-End Product Engineering

Full ownership from UI prototyping and API schema design to database optimization and cloud hosting.

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Production AI Workflows

Embedding OpenAI & Gemini APIs for automated content generation, smart classification, and chatbots.

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Enterprise B2B Architecture

Building scalable CRM, ERP, HRM, transaction ledger engines, and multi-tenant admin dashboards.

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Fintech & Security Standards

Implementing secure UPI gateways, digital wallets, commission calculation logic, and audit trails.

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Work Experience

MERN Fullstack Developer

Kam Global for Digital AI & Media Solutions Pvt. Ltd.

📍 RT Nagar, Bengaluru · 🗓️ 2026 – Present

🟢 Current Role

Architecting and shipping responsive enterprise web platforms using the MERN stack (MongoDB, Express.js, React.js, Node.js), leading end-to-end development from technical design to deployment.
Integrated OpenAI & Gemini LLM APIs to power intelligent automated content generation, media analytics tools, and interactive chatbot assistants.
Engineered secure, high-throughput RESTful APIs with JWT token authentication, custom rate limiting, and granular Role-Based Access Control (RBAC).
Crafted responsive, high-performance user interfaces with modular React components, state hooks, and optimized asset delivery pipelines.
Implemented real-time event webhooks and third-party integrations for seamless social media APIs, tracking metrics, and digital media workflows.

React.js Node.js Express.js MongoDB OpenAI / Gemini API JWT Auth REST APIs

MERN Stack Developer

Hival IT Solutions

📍 Bengaluru · 🗓️ 2025 – 2026

1 Year

Architected modular MERN applications with predictable state management using Redux Toolkit and Context API across 4+ business suites.
Designed optimized MongoDB schemas and aggregation pipelines, reducing multi-collection reporting query latency by over 30%.
Engineered enterprise B2B modules including CRM, ERP, HRM, and accounting systems with multi-role permissions and full audit logging.
Developed digital wallet engines and commission calculation logic, integrating payment gateways and real-time transaction reconciliation.
Embedded AI chatbot solutions to automate customer inquiry handling and reduce initial support response times.

React.js Node.js MongoDB Redux Toolkit Payment Gateway RBAC

Full-Stack Web Developer (Independent Consultant)

Freelance Client Engagements

📍 Remote · 🗓️ 2022 – 2025

3 Years

Delivered 10+ custom web platforms end-to-end for businesses across e-commerce, services, and B2B sectors with 100% on-time completion.
Engineered custom Core PHP backends following clean MVC patterns, custom routing, and secure session management.
Designed relational MySQL databases with optimized indexes, foreign key constraints, and normalized relational structures.
Integrated automated UPI QR payment verification and digital credit ledger management systems.
Built automated cron job pipelines for scheduled data backups, automated invoice generation, and transactional email triggers.

Core PHP MySQL JavaScript ES6+ UPI Gateway Cron Pipelines

Full-Stack Web Developer

AIOSP IT Solutions

📍 Kolkata · 🗓️ 2020 – 2022

2 Years

Developed responsive web portals and client interfaces using HTML5, CSS3, JavaScript, AngularJS, and Bootstrap.
Built Core PHP backend controllers and administrative dashboards with user authentication and exportable reporting tables.
Maintained MySQL database operations, optimizing CRUD queries and performing regular schema migrations.
Managed hosting infrastructure, DNS configurations, and production deployments via cPanel and Linux environments.

JavaScript AngularJS Core PHP MySQL cPanel

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Featured Key Projects

AI-Powered Digital Media & Content Automation Suite

Production · AI

An intelligent media operations platform that leverages generative AI APIs to automate content creation, asset distribution, and analytics tracking.

OpenAI / Gemini API integration for automated copy generation and smart prompt pipelines.
Interactive dashboard with real-time post analytics and engagement visualizers in React.js.
Secure Node.js & MongoDB backend with token authentication and role-based publishing controls.

React.js Node.js OpenAI API MongoDB JWT

Enterprise B2B CRM, ERP & Wallet Management Hub

Enterprise Platform

All-in-one business operations platform featuring HRM, accounting, customer relationship workflows, and an integrated commission wallet engine.

Multi-tier Role-Based Access Control (Admin, Manager, Agent, Client) with complete audit trail.
Automated ledger settlement engine with commission calculations and payment gateway triggers.
Complex MongoDB aggregation queries for instant generation of financial balance sheets.

MERN Stack Redux Toolkit Payment Gateway RBAC

Automated B2B Billing & UPI Reconciliation Engine

Fintech & Automation

A high-reliability billing and payment processing system designed for seamless UPI collection, invoice generation, and scheduled reconciliation.

Dynamic UPI QR code generation and instant payment status callback listeners.
Automated cron pipelines for scheduled invoice generation, customer reminders, and database backups.

Core PHP MySQL UPI API Cron Jobs

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Technical Skills

Core Proficiency

React.js & FrontendExpert

Node.js / Express.jsExpert

Core PHP & MVCExpert

MongoDB & MySQLAdvanced

AI & LLM API IntegrationAdvanced

Frontend Ecosystem

React.js JavaScript ES6+ HTML5 / CSS3 Redux Toolkit Context API Tailwind CSS Bootstrap AngularJS Responsive Web Design

Backend & APIs

Node.js Express.js Core PHP RESTful APIs JWT Authentication RBAC Permissions MVC Design Webhooks

Database & Storage

MongoDB MySQL Mongoose ODM Aggregation Pipelines Schema Optimization Indexing

AI & Automation

OpenAI API Gemini API AI Chatbots Prompt Engineering Workflow Automation Cron Job Pipelines

Payments & Fintech

UPI Integration Payment Gateways Wallet Systems Commission Engines Audit Logs

Tools & Infrastructure

Git & GitHub Postman VS Code cPanel Linux CLI npm / yarn

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Education

Bachelor of Arts (B.A.)

Gourbanga University

📅 2014 – 2017

Higher Secondary (10+2, WBBHSE)

Ramchandrapur High School

📅 2012 – 2014

Secondary (10th, WBBSE)

Ramchandrapur High School

📅 2007 – 2012

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Languages

English

Professional

Hindi

Fluent

Bengali

Native

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Key Strengths

End-to-End Delivery Scalable Architecture B2B Platforms AI API Integration Digital Media Platforms System Reliability Agile Development Team Collaboration