Oleg C.

I’m a Ruby on Rails developer/engineer with 8+ years of hands-on experience in building scalable, high-performance web applications. I specialize in clean architecture, well-tested code, and smooth third-party integrations that make platforms efficient and maintainable. What I Bring to Your Project -Backend Mastery: Ruby on Rails, Grape APIs, ActiveAdmin, RSpec, Capybara -Front-End Skills: ReactJS, Angular 2, jQuery, React Native + Expo -Tech Stack Expertise: PostgreSQL, MySQL, Redis, Docker, WebSockets -Integrations: Stripe, PayPal, Google Maps API -Localization: PhraseApp, Globalize for multi-language support Whether you need to build a robust API, integrate payment systems, optimize an existing codebase, or create a cross-platform app, I’m here to help you bring your product to life—efficiently and cleanly. Let’s build something great together!