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A-RYAN-1/README.md
Aryan Deshmukh, full stack developer with a backend focus, Pune

Portfolio  |  LinkedIn  |  Medium  |  LeetCode

About

I am a full stack developer with a backend focus at Josh Software in Pune, working on a production IoT water-metering and utility-billing platform. Meter readings arrive over MQTT into a Go service, a Ruby on Rails API turns them into bills, and React apps serve admins and residents, all on AWS. I own the billing module and built site onboarding end to end. My best stories come from production debugging, so I write them up.

Joined as an intern in January 2026 and converted to full-time in six months. B.Tech in Computer Engineering (Honours in Cyber Security), CGPA 9.26.

30+ pull requests shipped, 5 open-source PRs merged, 660 LeetCode problems solved, 3 engineering posts

What I work with

Languages Go Ruby TypeScript JavaScript C++
Backend Rails Gin Sidekiq MQTT
Frontend React Next.js
Data and cloud PostgreSQL Redis AWS Docker

Featured projects

All three are deployed and have a demo login in their README.

Project What it does Stack
smart-rule-based-approval-engine Rules engine that auto-approves, escalates or rejects leave, expense and discount requests. Live demo Go, Gin, PostgreSQL, React
fintech-fraud-detection Real-time transaction fraud detection: Rails API with risk rules and Solid Queue, plus a React dashboard. I wrote the backend. Live demo Rails, PostgreSQL, React
node-connect Decentralised chat with MetaMask sign-in and token rewards on a testnet. Live demo Solidity, Hardhat, Next.js

Open source

Merged pull requests, reviewed by the maintainers:

Project Change
hluk/CopyQ Add option to hide the menu bar and hide the window frame (C++, Qt)
ONEARMY/community-platform Migrated Breadcrumbs, CharacterCount and the admin layout breadcrumbs to the shared UI library (React, TypeScript)

More pull requests are open in Kubernetes tooling projects; GitHub lists them under "Contributed to" on my profile.

Writing

Production bugs, written as stories with the measured fix.

Talk proposals are in with GopherCon India 2026 and RubyConf India 2026.

Get in touch

I am happy to talk about backend systems, IoT data pipelines and open source. The fastest way is LinkedIn.

Pinned Loading

  1. smart-rule-based-approval-engine smart-rule-based-approval-engine Public

    Rules engine that auto-decides leave, expense and discount requests. Go, Gin, PostgreSQL, React.

    TypeScript

  2. node-connect node-connect Public

    Decentralised chat with MetaMask sign-in and token rewards. Solidity, Hardhat, Next.js.

    JavaScript

  3. Portfolio-Website Portfolio-Website Public

    Personal portfolio: projects, blog and resume. Static site on GitHub Pages.

    HTML

  4. fintech-fraud-detection fintech-fraud-detection Public

    Real-time transaction fraud detection: Rails API (risk rules, Solid Queue) + React dashboard

    TypeScript