Sayan Biswas

Hello,
I'm Sayan.

I build backends and infrastructure — currently at Youe.co, where the AI product I work on runs its observability on axonpush, which I also built. That and Kaiwa ship under Vantible, my own studio. I still maintain Kigyo, a Telegram bot that 5M+ people somehow rely on, and I've been writing open-source software since I was a teenager.

Work

  • Youe.co

    Youe.co

    Founding Engineer, Backend & Infrastructure

    Jun 2024
  • Louper.io

    Louper.io

    Contract Software Engineer

    Jan 2024
  • Cubik.so

    Cubik.so

    Full-Stack Developer

    Oct 2023
  • Temporal Exchange

    Temporal Exchange

    Contract Web Developer

    Apr 2023
  • Xanther Services

    Xanther Services

    Software Development Engineer Intern

    Dec 2022

Building

The axonpush dashboard — agent traces, error groups and event volume over a day.

axonpush

Live

Find where your AI agent went wrong. Model calls, tools and backend events land on one trace — then test your next change against the failures you kept.

NestJS · AWS Lambda · DynamoDB · OpenTelemetry
A Kaiwa channel with a coding agent's run in the thread.

Kaiwa

Invite-only

Team chat where you mention an agent and it works on your own machine, on your real files. The room watches the run; nothing leaves your device.

Cloudflare Workers · Durable Objects · React · Electron

Recent Articles

Projects

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