Klaudia B.Private profile: Upwork shows its earnings only to signed-in members, so we check it every few weeks, not daily. MRR here is a rough estimate (Upwork's six-month earnings ÷ months active). Last read Nov 5, 2026.

I have been developing commercial Ruby on Rails projects since 2017. I have started my career in graphic design and publishing where I have developed an eye for design and clean solutions. That experience helps me immensely in web development, to better understand what my customers are looking for. When writing code I adhere to two very basic rules: I always use git and I always write tests. This means that at the end of the day my projects run like clockwork. I always listen to my clients before making decisions and value their time by being upfront about my skills and competencies. I am a part of the Polcode team, a Polish software development company established in 2006 with over 150 developers, designers, project managers, DevOps and QA specialists onboard. This means that besides my programming skills you always have access to a full-stack product design & development team. My technical expertise: - Backend Ruby on Rails and API development - Frontend development with Rails, Vue.js, Hotwire, Stimulus - Database design and programming using PostgreSQL / MySQL - Server management and configuration: AWS, S3, DigitalOcean, Heroku - Server monitoring (Appsignal, DataDog) - Integration with popular APIs (Google, Amazon, Facebook, Twitter, Shopify, Stripe etc. ) - TDD / BDD - Unit and functional testing (RSpec, Minitest, Capybara, VCR) - web design and UX (Axure, Balsamiq, Zeplin, UXPin) My technology stack: - Backend: Ruby on Rails, MySQL, PostgreSQL, AWS, Heroku - Frontend: Javascript, jQuery, HTML, HAML, CSS, SASS, Bootstrap 3-5, Vue.js, Tailwind, Hotwire More about Polcode Polcode provides customized software solutions for startups, SaaS companies, eCommerce stores, and enterprise clients worldwide. From building the product from scratch to extending the existing teams, we have expertise in a diverse set of open source technologies and platforms to bring innovation in an agile fashion. Our team excels in PHP, Symfony, Laravel, Magento, Go, React Native, React.js, Vue.js, Ruby on Rails and Angular. With over 150 people, Polcode has either empowered client teams or delivered end-to-end development projects for brands from fintech, manufacturing, consulting, eCommerce, marketing or eLearning industries and is recognized as Top Developer in Poland by Clutch. Looking forward to our cooperation! Klaudia, Polcode Dev Team