Portfolio — Production Rails Projects

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Medical Cleaning Services Management Platform

Upwork (Oct 2023 - Present)

Solo-built Enterprise-grade Real-time tracking

Solo-built enterprise operations platform with complete job scheduling, GPS tracking, QR code integration, multi-role access system (Employee, Client, Admin, Super Admin), real-time notifications, client portal, PDF reports, and bulk Excel imports. Production-ready with comprehensive RSpec testing.

Ruby on Rails Hotwire Turbo Solid Queue MySQL Docker Kamal

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Book Publishing Management Platform

GoTabs Consulting (Jun 2022 - Present)

Multi-tenant SaaS 4 API integrations Complex royalty logic

Multi-tenant SaaS with automated royalty calculations (chain, direct, legacy methods), contract management, author portal with earnings visibility, and sales analytics. Integrated with Forlagssentralen, WooCommerce, Tripletex, and Stripe for billing.

Rails 8 PostgreSQL Hotwire Stripe Multi-tenant Docker Kamal

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Beauty Pro Job Board & Hiring Platform

Upwork (Jan 2022 - Present)

Two-sided marketplace OAuth API Subscription billing

Two-sided marketplace for beauty professionals and companies. Features include professional portfolios with tier system, company workspaces with role-based access, Stripe subscription tiers, two-way review system, and OAuth API provider via Doorkeeper for third-party integrations.

Ruby on Rails PostgreSQL Turbo Stripe Doorkeeper ActiveAdmin

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Domain Registration & Management Platform

Upwork (Sep 2019 - Present)

E-commerce DNS management Domain sniping

Complete domain management system with multi-TLD registration, bulk operations, DNS record management, domain sniping service, auto-renewal system, and full e-commerce with Stripe/PayPal integration. Includes admin panel for platform management.

Ruby on Rails MySQL Python JavaScript Stripe PayPal

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Payroll & HR Management System

Knit People, Canada (2016-2019)

Payroll processing HR features Compliance

Backend development for payroll processing, HR features, employee management, and tax calculations. Handled complex business logic for multi-region compliance and data processing at scale.

Ruby on Rails JavaScript PostgreSQL REST API

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Business Directory Platform

Yoolk, Cambodia (2013-2016)

High-volume data Search optimization Reporting

Backend systems for comprehensive business directory with internal reporting, search optimization, and database performance tuning. Supported thousands of business listings with fast query responses.

Ruby on Rails PostgreSQL MySQL Redis