Vetzi

What the product does

A telemedicine marketplace where pet owners book licensed veterinarians for online appointments and attend them over video, with medical records and call artefacts stored per consultation.

The problem it solves

A marketplace has two sides to satisfy: pet owners need appointments they can book and attend online, and veterinarians need onboarding, verification and reliable payouts from the consultations they deliver.

What I contributed

Full-stack work on the marketplace payment flow, video consultations, appointment lifecycle and the veterinarian onboarding pipeline.

How the system was designed

A Next.js frontend over a Node and Express API with MongoDB, using Stripe for marketplace payments with automated revenue splitting, Agora for live consultations, and AWS S3 for medical records, veterinarian documents and call transcripts.

System architecture

What it does in practice

The interesting engineering problems

• Preventing slot hoarding

  Problem

  Appointment slots held during an incomplete booking can lock out other pet owners indefinitely.

  Approach

  Introduced a draft-appointment flow with a 2-hour TTL, so unconfirmed holds expire and the slot returns to the pool.

• Splitting revenue reliably

  Problem

  Each consultation's payment has to be divided between the platform and the veterinarian, and stay correct when a refund follows.

  Approach

  Automated the revenue split in the Stripe flow and processed refunds from webhooks, so both sides of the split follow the payment's real state.

The stack behind it

• Next.jsReact Framework
• Node.jsBackend Runtime
• Express.jsHTTP Framework
• MongoDBDocument Database
• Prisma ORMType-Safe ORM
• Socket.ioRealtime Transport
• Agora RTCRealtime Audio & Video
• StripePayments
• S3AWS S3Object Storage