Muhammad Hamid R.

I’m a Full-Stack Developer with 10+ years of experience building high-performance, scalable web applications — specializing in Ruby on Rails and Shopify development. I’ve successfully delivered projects across eCommerce, SaaS, IoT, and real-time systems, helping businesses ship faster, scale reliably, and seamlessly integrate with third-party services. Over the years, I’ve worked with companies like Danube.sa, Tractive, and SpaceOS, leading engineering efforts to build real-time tracking systems, multi-tenant SaaS platforms, and high-volume checkout engines. My approach combines strong technical expertise with a product-focused mindset — ensuring that the solutions I deliver are both robust and aligned with business goals. Core Skills & Expertise Backend Development: Ruby on Rails, Service Objects, Interactors, Grape API, GraphQL, RESTful JSON/XML APIs Frontend Development: Hotwire, Stimulus.js, React, Vue.js, Angular, Slim, HAML, CoffeeScript, Bootstrap, SASS Databases & Search: PostgreSQL, MySQL, MongoDB, Redis, Memcache, Elasticsearch, Solr eCommerce Development: Shopify (custom apps, themes, checkout flows), Solidus/Spree, A/B Testing, Promotions Payments Integration: Stripe, PayPal, Adyen, Braintree, FirstData, Subscription Billing Real-Time Features: ActionCable, Hotwire, Turbo Streams, WebSockets, Pusher Background Processing: Sidekiq, Redis, RabbitMQ, Mailers Testing & Security: RSpec, Cucumber, MiniTest, FactoryBot, OWASP-based security practices DevOps & Infrastructure: Docker, CI/CD (GitHub Actions, Jenkins), Heroku, Capistrano, Puma, Nginx, Apache Integrations: Amazon S3, Mandrill, Mailchimp, Twilio, Google Maps, Highcharts, Web Scraping SaaS Architecture: Multi-tenant platforms (Apartment gem), Rails Engines, Headless CMS, Microservices Why clients hire me: 10+ years of hands-on development experience with proven success in Ruby on Rails and Shopify projects Strong expertise in scaling systems, API development, and complex integrations Focus on clean, maintainable code that reduces long-term technical debt A track record of delivering projects that drive measurable business results Whether you need to launch a new Shopify store, customize your eCommerce checkout flow, build a scalable SaaS platform, or integrate complex APIs, I can help you deliver a solution that’s both technically solid and business-driven.