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Mahavir Vaishnav

@mahavirvaishnav

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I build scalable SaaS, logistics, analytics, and AI platforms with Node.js, React, and distributed systems.

India

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What I'm looking for

I'm looking to build scalable, data-intensive SaaS or AI products where I can lead engineering initiatives, design distributed systems, and deliver business-critical solutions for enterprise users.

I've built and scaled platforms at Nexsales Solution, Shipyaari, Master-O, and Appectual, spanning enterprise analytics, logistics, learning applications, and full-stack web products. At Nexsales, I reduced PostgreSQL query execution time from five minutes to under 10 seconds and led six engineers through system design and delivery for US-based enterprise clients.

At Shipyaari, I helped scale the Blaze logistics platform for 5,000+ merchants, building event-driven workflows, real-time tracking, e-commerce integrations, and payment systems. I also founded PdfRaven and Trenold, applying Next.js, FastAPI, Node.js, MongoDB, and OpenAI APIs to document and AI-powered SaaS products.

Experience

Work history, roles, and key accomplishments

Senior Software Developer

Nexsales Solution Pvt Ltd

Feb 2025 - May 2026 (1 year 3 months)

Optimized PostgreSQL query performance through strategic indexing and query refactoring, reducing execution time from 5 minutes to under 10 seconds. Led a team of 6 engineers and operated as a Forward Deployed Engineer for US-based enterprise clients.

PostgreSQL Python Pandas System Design Distributed Systems Agile Jira Confluence

Full Stack Developer

Shipyaari

Jul 2023 - Jan 2025 (1 year 6 months)

Developed and scaled Blaze, a logistics platform serving 5,000+ merchants, and integrated major e-commerce platforms. Engineered RabbitMQ-based asynchronous processing and event-driven workflows, boosting API performance by 60%.

RabbitMQ Socket.IO Shopify WooCommerce Amazon SP API Zoho Phone Pe Paytm Razorpay Juspay

Software Development Engineer

Master-O

Jan 2022 - Apr 2023 (1 year 3 months)

Integrated enterprise-grade HRMS APIs and automated backend workflows using Cron Jobs. Designed and developed interactive learning applications using React.js, including real-time educational games and assessment modules.

React JavaScript REST APIs

Software Development Engineer

Appectual

Aug 2020 - Dec 2021 (1 year 4 months)

Developed responsive web applications using React.js and built Node.js and Express.js APIs. Collaborated with engineering and product teams to develop, test, and deploy scalable full-stack applications.

React Node.Js Development REST APIs