Available for new opportunities

Hi, I'mMahavir Vaishnav

I buildsystems that scale

I architect and scale SaaS, analytics, logistics, and AI platforms — turning five-minute queries into ten-second ones, and prototypes into systems that hold up under real load.

Mumbai, India
View my workDownload Resume
01 — About

A bit about me

Senior Software Engineer with 5+ years of experience building and scaling SaaS, analytics, logistics, and AI-powered platforms using Node, TypeScript, React, Next.js, PostgreSQL, and MongoDB. Proven expertise in system design, database performance optimization, distributed systems, and third-party integrations.

Strong track record of delivering scalable solutions for US-based enterprise clients and leading engineering initiatives, with hands-on work in AI-driven and data-intensive systems.

Available for new opportunities — Open to remote roles worldwide
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Years building for production
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Orders processed per hour
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Merchants on platforms I built
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Engineers led
02 — Skills

Tools I work with

A full-stack toolkit spanning product engineering, distributed backends, cloud infrastructure, and applied AI.

TypeScriptNode.jsReactNext.jsPostgreSQLMongoDBAWSDockerRabbitMQRedisPythonFastAPIOpenAIClaude APISocket.ioTypeScriptNode.jsReactNext.jsPostgreSQLMongoDBAWSDockerRabbitMQRedisPythonFastAPIOpenAIClaude APISocket.io

Languages

  • JavaScript (ES6+)
  • TypeScript
  • Python

Frontend

  • React.js
  • Next.js
  • Redux
  • HTML5
  • CSS3
  • Tailwind CSS

Backend

  • Node.js
  • Express.js
  • FastAPI
  • REST APIs
  • API Design
  • Auth & Authorization

Databases

  • PostgreSQL
  • MongoDB
  • MySQL
  • Microsoft SQL Server
  • Indexing & Query Tuning

System Design

  • Software Architecture
  • Distributed Systems
  • Event-Driven Architecture
  • Microservices
  • Scalability
  • Performance Optimization

Messaging & Real-Time

  • RabbitMQ
  • Redis
  • Socket.io
  • WebSockets

Cloud & DevOps

  • AWS (Lambda, EC2, API Gateway, SES, S3, Route 53, Amplify)
  • Docker
  • CI/CD
  • Linux
  • Nginx
  • PM2
  • GitHub Actions

AI & Data

  • OpenAI APIs
  • Claude API
  • Claude Code
  • LLM Integration
  • AI Applications
  • Pandas
  • NumPy

Leadership & Process

  • Team Leadership
  • Technical Mentoring
  • Forward Deployed Engineering
  • Agile / Scrum
  • Jira
  • Confluence

Tools & Platforms

  • Git
  • GitHub
  • Sentry
  • Postman
  • GA4

Integrations

  • Shopify
  • WooCommerce
  • Amazon SP API
  • Zoho
  • Razorpay
  • PhonePe
  • Paytm
  • JusPay
03 — Experience

Where I've worked

5+ years shipping production systems across enterprise analytics, logistics, ed-tech, and consulting — increasingly at the architecture and team-leadership end.

Senior Software Developer · Nexsales Solution Pvt Ltd

Feb 2025 – May 2026

Andheri, Mumbai

  • 5 min → 10 s queries
  • 6 engineers led
  • 40% less manual ops
  • Took the platform's worst analytics queries from 5 minutes to under 10 seconds — profiling query plans, designing the right indexes, and refactoring the SQL behind enterprise reporting workloads.
  • Led a team of 6 engineers across feature planning, system design, architecture, and delivery, setting the technical direction with data teams and senior leadership.
  • Architected the backend and distributed data flows behind enterprise analytics workflows, designing for high-volume processing without sacrificing query latency.
  • Embedded as a Forward Deployed Engineer with two US-based enterprise clients — gathering requirements first-hand, driving solution discussions, and shipping business-critical features against real deadlines.
  • Built Python and Pandas automation for large-scale analytics reporting, removing 40% of the team's manual operational work.
  • Ran Agile delivery end to end through Jira and Confluence, making releases predictable and knowledge shared instead of tribal.

Full Stack Developer · Shipyaari

Jul 2023 – Jan 2025

Malad, Mumbai

  • 5,000+ merchants
  • 1,000+ orders/hour
  • 98% success rate
  • 60% faster APIs
  • Architected and scaled Blaze, a logistics platform serving 5,000+ merchants — sustaining 1,000+ orders per hour across 100+ concurrent users at a 98% order-processing success rate.
  • Re-engineered high-volume operations onto RabbitMQ-backed asynchronous, event-driven workflows, decoupling the critical path to lift API performance 60% and keep the system resilient under burst load.
  • Owned the core shipment engine: lifecycle management, rate calculation, courier selection, and tracking workflows spanning multiple logistics partners.
  • Integrated Shopify, WooCommerce, Amazon, and Zoho so merchant catalogues and orders stayed in sync across systems without manual reconciliation.
  • Integrated PhonePe, Paytm, Razorpay, and JusPay for secure transaction processing and streamlined financial operations.
  • Built real-time operational dashboards and shipment visibility on Socket.io, giving merchants and internal logistics teams a live view instead of a stale one.

Software Development Engineer · Master-O

Jan 2022 – Apr 2023

Remote

  • Integrated enterprise-grade HRMS APIs and automated backend workflows with cron-driven jobs, cutting recurring manual processes out of the loop.
  • Designed and built interactive learning applications in React.js, including real-time educational games and assessment modules.
  • Shipped the Learning Aid Card (LA Cards) platform — swipe-based navigation with rich multimedia content including images and video.
  • Designed a reusable, configurable component system that let non-engineers compose entirely new learning experiences from admin-managed content.

Software Development Engineer · Appectual

Aug 2020 – Dec 2021

Malad, Mumbai

  • Built responsive React.js web applications delivering a consistent experience across desktop and mobile.
  • Built and maintained Node.js and Express.js APIs powering business workflows and third-party integrations.
  • Worked alongside engineering and product to develop, test, and ship full-stack applications, contributing to performance work and feature delivery.
04 — Featured Work

Products I've built

Founder-led products where I owned every decision — architecture, infrastructure, interface, and go-to-market.

PdfRaven

PDF SaaS, designed and shipped solo

An end-to-end PDF SaaS — redaction, editing, merging, compression, and format conversion — built on a FastAPI document-processing backend behind REST APIs, with a server-rendered Next.js frontend tuned for speed and SEO. The architecture separates document workflows, auth, payments, and processing pipelines so LLM-powered editing and intelligent automation drop in without a rewrite. Every paying user arrived organically through technical SEO, measured in GA4, with zero paid marketing.

  • 8 active Pro users
  • 100% organic acquisition
Next.jsFastAPIMongoDBTailwind CSSGA4
Founder & Software EngineerJun 2026 – Present

Trenold

AI conversational platform

An AI-powered conversational platform for content generation, question answering, and productivity workflows. Built on OpenAI APIs with real-time prompt-based interactions over a web interface, and a frontend/backend split deliberately kept model-agnostic so additional LLM providers plug in as first-class citizens.

ReactNode.jsOpenAI APIsCloud APIs
Founder & Software EngineerJan 2025 – Feb 2025

Education

Bachelor of Engineering · Atharva College of Engineering

Malad, Mumbai

Aug 2016 – Jul 2020
05 — Contact

Let's build something great together.

I'm open to senior engineering roles, consulting, and interesting collaborations. The fastest way to reach me is email.

mvaishnav888@gmail.com