Open to opportunities

Madhan User

@madhanuser3

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Ruby on Rails developer at Applaunch who built a versioned content-approval workflow for a medical-education SaaS.

India

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At Applaunch, I was the sole Rails engineer on MRI Essentials, a medical-education SaaS for iOS, Android and web. I owned its backend, admin panel, releases and production support, and built a versioned chapter-approval workflow with audit history and rollback.

I maintained subscription billing across Stripe, Apple StoreKit 2 and Google Play, using idempotent handlers to prevent duplicate charges on retries. At Magicpitch, I cut dashboard load time by 25%, and I also built a LinkedIn prospect-extraction Chrome Extension; I’m now developing Invoiceo, an offline GST billing app for Indian small businesses.

Experience

Work history, roles, and key accomplishments

Ruby on Rails & Node.js Developer

Applaunch

Sep 2025 - Sep 2026 (1 year)

Sole Rails engineer on a medical-education SaaS, owning the backend, admin panel, releases, and production support. Built a versioned content-approval workflow and maintained subscription billing across Stripe, Apple, and Google Play with idempotent webhooks.

Ruby on Rails & React JS Developer

Magicpitch

Dec 2023 - Jul 2025 (1 year 7 months)

Cut dashboard page load time by 25% through eager loading, database indexing, and smaller React payloads. Owned admin and backend modules, built campaign scheduling and automated follow-up sequences, and developed a LinkedIn prospect-extraction Chrome Extension.

Ruby on Rails React JavaScript jQuery HTML CSS MySQL PostgreSQL N+1 Query Elimination Database Indexing Chrome extensions Manifest V3 Agile Jira Confluence

Ruby on Rails Developer Intern

Mallow Technologies Pvt. Ltd.

Jan 2023 - Jul 2023 (6 months)

Built a Rails + Ajax e-commerce app for a retail business, including product catalog, cart, checkout, and admin panel. Designed relational schemas in MySQL and wrote optimized SQL queries.

Ruby on Rails AJAX MySQL SQL HTML CSS JavaScript Agile