Mahavishnu
Senior Full Stack Engineer · PHP, Laravel, React.js & FastAPI · 6+ Years

Mahavishnu

Building production web applications, REST APIs, and business platforms with Laravel, React / Next.js, FastAPI and hands-on experience in AI automation, RAG, and multi-agent workflows.

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Mahavishnu Profile

About Me

I'm a Senior Full Stack Engineer with 6+ years of experience building production web applications, REST APIs, and business platforms using PHP/Laravel, React.js/TypeScript, FastAPI/Python, and PostgreSQL/MySQL.

Delivered 20+ production applications supporting 25,000+ users and millions of records — with hands-on experience in AI-assisted automation, RAG, multi-agent workflows, API integrations, and end-to-end cloud and on-premise deployment.

Laravel / PHP
FastAPI / Python
React.js / Next.js
AI & LLM

Featured Projects

A selection of production applications and platforms I've built across AI, logistics, tourism, and enterprise automation.

AI Search Engine
AI Search Engine
Enterprise semantic search platform using React, TypeScript, FastAPI, PostgreSQL, FAISS/Qdrant, LangChain, OCR, hybrid search, RAG, multi-agent routing, and citation-based responses.
ReactTypeScriptFastAPIPostgreSQLQdrantFAISSLangChainOCRRAG
Details
WhatsApp Chatbot
WhatsApp Chatbot
Production chatbot using FastAPI and Meta WhatsApp Cloud API with FAQ automation, customer workflows, escalation, broadcast messaging, analytics, and agent inbox.
FastAPIPythonMeta WhatsApp Cloud APIPostgreSQLRedis
Details
Loan Approval System
Loan Approval System
Full-stack loan application and approval platform with separate frontend, backend, and AI-agent services for application processing and automated approval workflows.
ReactTypeScriptFastAPIPostgreSQLLangChainPython
Details
AI-Powered Agentic Legal System
AI-Powered Agentic Legal System
A sophisticated multi-agent system designed for legal document analysis, semantic search, and RAG (Retrieval-Augmented Generation). Built using LangChain and LangGraph for complex agentic workflows, with Pinecone as a vector database.
FastAPILangChainLangGraphPineconeOpenAIPostgreSQL
Details
Smart Vehicle Monitoring & Management Dashboard
Smart Vehicle Monitoring & Management Dashboard
A specialized enterprise solution for real-time motor vehicle overload detection and AI-driven accident summarization. Features a high-throughput architecture using RabbitMQ for event processing and a responsive Laravel-based management dashboard.
LaravelFastAPIRabbitMQMySQLPythonReact
Details
Enterprise Tourism & Booking Suite
Enterprise Tourism & Booking Suite
A massive production suite encompassing 20+ specialized modules for hotel management, ferry booking, tour package creation, and cab services. Serving 25,000+ monthly users with real-time availability and automated WhatsApp confirmations.
LaravelReact.jsInertia.jsMySQLRazorpayDigitalOcean
Details
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Skills & Services

Technologies I work with daily and services I offer.

PHPLaravelFastAPIPythonREST APIsLivewireFilamentPHPRabbitMQReact.jsNext.jsTypeScriptJavaScriptInertia.jsTailwind CSSBootstrapPostgreSQLMySQLRedisMongoDBTimescaleDBVector DatabasesQdrantOpenAI APIsLLM IntegrationLangChainMCP (Model Context Protocol)Prompt EngineeringOCRAI AutomationDockerLinuxNginxGitGitHub ActionsCI/CDDigitalOceanCloud ComputingPayment GatewaysThird-Party APIsSMS & WhatsApp IntegrationsPostmanPHPLaravelFastAPIPythonREST APIsLivewireFilamentPHPRabbitMQReact.jsNext.jsTypeScriptJavaScriptInertia.jsTailwind CSSBootstrapPostgreSQLMySQLRedisMongoDBTimescaleDBVector DatabasesQdrantOpenAI APIsLLM IntegrationLangChainMCP (Model Context Protocol)Prompt EngineeringOCRAI AutomationDockerLinuxNginxGitGitHub ActionsCI/CDDigitalOceanCloud ComputingPayment GatewaysThird-Party APIsSMS & WhatsApp IntegrationsPostmanPHPLaravelFastAPIPythonREST APIsLivewireFilamentPHPRabbitMQReact.jsNext.jsTypeScriptJavaScriptInertia.jsTailwind CSSBootstrapPostgreSQLMySQLRedisMongoDBTimescaleDBVector DatabasesQdrantOpenAI APIsLLM IntegrationLangChainMCP (Model Context Protocol)Prompt EngineeringOCRAI AutomationDockerLinuxNginxGitGitHub ActionsCI/CDDigitalOceanCloud ComputingPayment GatewaysThird-Party APIsSMS & WhatsApp IntegrationsPostman
01

Full-Stack Engineering

End-to-end development of scalable SaaS platforms and enterprise applications using Laravel and Next.js.

02

Agentic AI & LLM Workflows

Building intelligent systems with multi-agent workflows, RAG, and custom LLM integrations using LangGraph.

03

Backend & Event-Driven Systems

Designing high-performance APIs and distributed systems with FastAPI and RabbitMQ message queues.

04

Modern Frontend Architecture

Crafting pixel-perfect, interactive user experiences with React, TypeScript, and modern state management.

05

Enterprise Integrations

Seamlessly connecting platforms with third-party services like Payment Gateways and WhatsApp Automation.

06

Technical Consulting

Strategic technology guidance, system architecture design, and comprehensive code audits for businesses.