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Prajata22/README.md
Prajata Samanta · Founder & CTO at Utsav · Kolkata, India

Hi. I run engineering at Utsav, where devotees across India book a puja from their phone, a temple performs it, and the video (and often the prasad) finds its way back to them. Small team, big surface: two mobile apps, a website, an admin platform, nine repos, shipping in Tamil, Telugu, Kannada, Hindi and English.

I like systems that keep working at 3 am, and tooling that gives the team an afternoon back.

What's on my desk

  • Booking and payments that survive three gateways, retries, refunds, and the occasional webhook that arrives twice.
  • Ops tooling for a team that talks to customers on WhatsApp all day: call trackers, lead routing, schedule dashboards.
  • A video pipeline that turns raw temple footage into a finished puja video without anyone sitting at a timeline.
  • An agent for every department. More on that below.

How I use AI, for real

Not demos. Things the team actually runs every week.

  • One Claude Code agent per department: marketing, SEO, BI, support, ads, push. Each has its own context, prompts and skills, versioned in a repo like any other code.
  • The monthly engineering report writes itself from the git history of every repo plus the team's daily log, then renders to a five-page PDF for the all-hands.
  • The new-developer onboarding kit regenerates from the live code: ER diagrams checked against the models, ports, env names, versions. It is never stale on someone's first day.
  • Before anyone touches an API shape or a database column, an agent traces the blast radius across all the repos and lists every consumer.
  • In the product: puja and event copy drafted and translated into five languages, and support chat on WhatsApp and social, on a model-agnostic service. A human approves every word a customer sees.

The rule is simple. AI drafts, people decide, and everything it touches shows up in a diff.

How I work

  • PRD first. But the PRD is written from what the code does today, not from what we wish it did.
  • Docs live in the repo as markdown, next to the code they describe. If it only exists in a chat thread, it doesn't exist.
  • One repo, one branch, one PR. Anything that crosses repos gets its consumers listed before a line is written.
  • Every user-facing string is a five-language change. No "we'll translate it later".
  • Dense data, calm tables. Weight over colour.
  • I'd rather read the log than the slide.

Stack

Apps React Native + Expo, iOS and Android
Web Next.js, React, Tailwind, Vercel
Services Node.js + TypeScript on GKE · Python + FastAPI on Cloud Run
Data Postgres on Cloud SQL, Redis
Async AWS Lambda + SQS for webhooks and messaging
Payments Razorpay, PayU, PhonePe
AI Claude and Claude Code, Gemini, OpenAI
Earlier life Android in Java and Kotlin, 2019 to 2023

Two packages on npm

Both derived from MIT-licensed projects and adapted for my own needs: image-stories, from react-insta-stories, and i18n-next-export, from next-export-i18n.

Say hi

LinkedIn · X · utsavapp.in · the company org, @applex-in

The green squares below are mostly private repos under @applex-in.

Pinned Loading

  1. AppLocker AppLocker Public archive

    Based on balrampandey19/AppLocker: four-digit PIN lock library for Android apps. Kept for reference

    Java 1

  2. ShareIT ShareIT Public archive

    Based on TrebleShot: offline file and text sharing app for Android. Kept for reference

    Java 1

  3. Kotlin_Basic Kotlin_Basic Public

    Kotlin learning project: activities, fragments, RecyclerView and ConstraintLayout

    Kotlin 1

  4. Swift-Basic Swift-Basic Public

    SwiftUI learning project: onboarding, list and detail views, settings screens

    Swift 1

  5. Customized_QR Customized_QR Public archive

    Based on scola/Qart: QR codes blended with an image, for Android. Kept for reference

    Java 1