Raza H.

Full-Stack AI Engineer for Your SaaS products | Ruby on Rails Expert

Is your Ruby on Rails app slow or buggy, or do you want to integrate AI and are stuck on a version you're afraid to upgrade? That's exactly what I fix. I'm a Senior Ruby on Rails Developer with 15 years of experience, $100K+ earned on Upwork, a 100% Job Success Score, and Top Rated status. I rescue, modernise, and scale Ruby on Rails applications — without breaking what already works. What I deliver for clients: - Rails version upgrades (Rails 4/5 to 6/7/8) with zero downtime and full test coverage — including legacy migrations like Paperclip to ActiveStorage - Performance optimization — up to 40% speed gains on production systems through query tuning, caching, and background jobs - Legacy & undocumented codebases stabilized by a senior hand, with RSpec/Capybara coverage so you can ship with confidence - SaaS backends from MVP to production-grade (Ruby on Rails, PostgreSQL, Sidekiq, Redis, Heroku, Docker) - Rails APIs integrated with React / Next.js frontends and third-party services (Stripe, PagerDuty, StatusPage, OpenAI) Proof it works: - Rebuilt StatusGator's Rails platform over 2 years — became their most prolific contributor (2,000+ hours, $60K+). "He ended up becoming the most prolific contributor to our project." — Colin B., StatusGator - Upgraded a client's app from Rails 4 + Paperclip to a modern stack — "Raza was great!" (5.0 stars) - 21+ completed jobs, the majority rated 5.0 stars, with repeat clients spanning 1,000+ hour engagements I work full-stack across Node.js, Next.js, and React when a project needs it — with the same clean architecture and testing discipline I bring to Rails. I communicate daily, write clean tested code, and treat your product like my own. Message me with your stack and what's broken — I'll tell you within 24 hours if I can help.