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Full-Stack EngineeringProfessional case study

Professional project

Childcare Operations Administration Platform

Backend and DevOps engineer

Contributed backend services and delivery automation to a childcare marketplace administration platform covering providers, bookings, subscriptions, verification and payment operations.

Express.jsMySQLFirebase AuthStripeGitHub ActionsPM2REST APIs
Confidentiality: This case study describes my contribution at a high level and excludes client data, private source code and internal operational details.

What the work delivered

01

Added administrator workflows for users, reviews, bookings, subscriptions and provider verification

02

Implemented a reliable one-time daily-pass payment path, including zero-dollar checkout handling

03

Maintained automated deployment and process-management workflows for the hosted application

Goals

  • Give administrators one place to manage marketplace operations
  • Handle paid and fully discounted checkout paths reliably
  • Keep deployment repeatable across frontend and backend services

Key design decisions

  • Used Firebase Authentication with Express authorization boundaries
  • Modelled verification records separately from provider summary flags
  • Used Stripe webhooks as the source for final subscription state
  • Automated VPS deployment and PM2 reloads through GitHub Actions

Challenges and solutions

Zero-dollar checkout

Used a SetupIntent path when a one-time coupon reduced the charge to zero, while keeping webhook-driven subscription updates consistent.

Verification consistency

Kept detailed criminal-record and child-abuse checks in dedicated tables and synchronized provider-level verification indicators.

Key learnings

  • Designing payment flows for both charged and fully discounted outcomes
  • Maintaining data consistency across webhooks and administrative actions
  • Supporting product delivery across backend development and operations