Bring the plan together.

A shared workspace for event registrations, automatic waitlists, polls, and appointments, with an AWS architecture prepared for future deployment.

React
TypeScript
Express
AWS / DynamoDB
SQLite
Docker
GitHub Actions

Source repository is private.

THE CONTEXT

A closer look.

The problem

Coordinating events across separate forms and spreadsheets makes capacity, participation, and scheduling hard to keep consistent. A shared application needs to prevent duplicate registrations and conflicting bookings.

What I built

As part of a university team project, I worked on a React and TypeScript workspace backed by a Node.js and Express API. The functional local prototype supports event registration, FIFO waitlists, polls, and appointment reservations, with persistent SQLite storage and a separate DynamoDB adapter.

HOW IT FITS TOGETHER

The architecture.

01
React, Vite, and Tailwind CSS provide the responsive interface.
02
An Express API validates requests and enforces authentication and resource ownership.
03
SQLite persists local records; the DynamoDB adapter uses conditional transactions for shared storage.
04
CloudFormation prepares an AWS load balancer, private EC2 application instances, and DynamoDB access. This cloud architecture is not deployed.

ENGINEERING DETAILS

Decisions that matter.

Consistent participation

Version-checked transactions protect capacity and duplicate registrations. Cancelling a confirmed place promotes the next person in the FIFO waitlist in the same transaction.

One workspace, clear boundaries

Server-side ownership checks protect organizer resources. Polls accept one vote per authenticated person, and appointment slots permit one booking at a time.

A measured path to cloud

GitHub Actions validates the application and prepares build artifacts. Docker and CloudFormation support future deployment; no live AWS deployment or public demo is claimed.

Verified against authorized project documentation and implementation. Source remains private. The illustration shows the local application and a separately prepared cloud storage path.

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