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Mithilesh Chellappan

Engineering lead building production backends, iOS products, and AI-assisted developer tools.

Email | LinkedIn | X

Go TypeScript Swift PostgreSQL Docker Cloudflare

What I build

I like owning the parts of software that quietly decide whether a product works: APIs, queues, deployment scripts, observability, data pipelines, Live Activity delivery, and the glue between mobile apps and backend systems.

  • Engineering Lead at Arkade Club, owning backend infrastructure for Apple-featured apps used by 3M+ people.
  • Creator of Pushboy, a Go-based SNS alternative for self-hosted push notifications, Live Activities, delivery receipts, scheduling, topics, and dispatch state.
  • Primary contributor to App Store Connect CLI, with 31+ merged PRs across TestFlight, IAPs, subscriptions, pricing, localization, screenshots, auth, and workflows.
  • Built and launched iOS products including Focus Rail, with Mapbox, SwiftUI, embedded SQLite, RevenueCat, and App Store workflows.
  • Winner of the RevenueCat Shipaton 2025 $10,000 prize for Dripped, an AI wardrobe app with RAG-powered recommendations.

Selected work

Project Why it matters
Pushboy Go notification infrastructure with Postgres storage, worker pipelines, APNs/FCM dispatch, OpenAPI docs, Docker setup, and Live Activity support.
App Store Connect CLI Open-source contributor to a 4k+ star CLI used to automate Apple developer workflows.
Focus Rail Shipped iOS focus timer that turns Pomodoro sessions into train journeys with maps, history, subscriptions, and route data.
Dripped iOS AI outfit recommendation product using Cloudflare Workers, TypeScript, embeddings, vector search, and LLM orchestration.
Pokemote 70+ star MCP server and real-time TV control system using Server-Sent Events and semantic search.
ConvJobs Hackathon-winning AI hiring platform with React/Vite, Convex, Clerk, OpenAI embeddings, and conversational candidate search.

Toolbox

Go, TypeScript, Node.js, Swift, Python, PostgreSQL, MongoDB, SQLite, Docker, Cloudflare Workers, Azure, Loki, Grafana, Tempo, SwiftUI, Mapbox, RevenueCat, OpenAI, Claude, Codex, LangChain, RAG, vector databases, CI/CD, Linux VMs.

How I work

I use AI agents every day, but the bar is still production evidence: read the code, ship the narrow fix, run the tests, inspect the logs, and verify the real path.

Pinned Loading

  1. pokemote pokemote Public

    TypeScript 73 4

  2. convjobs convjobs Public

    ConvJobs powered by Convex!

    TypeScript 2 1

  3. perkpal perkpal Public

    Perplexity powered Credit Card assistant that provides any updates on your credit card and optimizes your rewards redemption strategies

    TypeScript

  4. pushboy pushboy Public

    Topics managed push notification server written in GO

    Go 1

  5. reGGGGo reGGGGo Public

    TypeScript

  6. wewake wewake Public

    A collaborative alarm app built on top of C# and Flutter

    C# 1