Product: https://www.checkout-x.comResponsibility: Leading the whole dev team. Shaping the product with the CEO. Making sure everything runs smoothly with traffic up to 600 requests per second.Main product features: checkout page, handling payments, creating orders, product recommendations, analytics, integrations with Shopify, Stripe, WooCommerce and more.Tech stack: Ruby on Rails, Hotwire, React, GraphQL, PostgreSQL, Tailwind CSS.

Product: Internal system for managing the co-working spaces of https://www.puzl.com.Responsibility: Leading the dev team. Help shaping the product. Design the UI and UX.Main product features: manage co-working tenants and subscriptions, issue invoices, reminders for missing payments, overview of space availability with interactive floor plans, generate financial reports.Tech stack: Ruby on Rails, React, GraphQL, PostgreSQL.

Product: https://dext.comResponsibility: Lead a team of 4 developers and report to the CTO. Provide technical expertise and advice product owners when building new features.Main product features I was involved in: generate expense reports, integration with email providers, extracting and transforming data used by machine learning algorithms, improving the test suite by fixing flaky tests.Tech stack: Ruby on Rails, Backbone.js, React, PostgreSQL.

Product: Multiple ones, mostly internal.Responsibility: Build REST API and document it, integrate with third-party services like https://www.expedia.com.Tech stack: Ruby on Rails, PostgreSQL

Product: https://www.sky.comResponsibility: Short-term contract. Develop new features related to an upcoming product. Integrate with multiple micro-services.Tech stack: Ruby on Rails, Sinatra, Microservices.

Product: https://www.notonthehighstreet.comResponsibility: Develop new features, fix bugs, rewrite legacy parts of the product, update big monolith Rails and its dependencies to the latest versions, fix flaky tests.Tech stack: Ruby on Rails, PostgreSQL or MySQL

My first position as a Ruby developer.Responsibility: Rewrite legacy app from PHP to Ruby on Rails.

Product: Website builder using drag-and-drop widgetsThe biggest challenge in the product was building highly interactive website builder using the technologies available at the time.Tech stack: PHP, MySQL, jQuery

My first professional role where I learned more about the web platform and started building my foundations as web developer.Product: Real estate portal with internal system for managing properties and brokers.Tech stack: PHP, MySQL, MongoDB, jQuery