Błażej Rybczyński

System Architect | Senior BE Engineer

UNIT9•  October 2015 - Present•  Remote

- Designed, implemented, and successfully delivered over 20 cloud-based, distributed, highly scalable systems - Owned 100% responsibility for the architecture and technology decisions that met a vast variety of requirements from the biggest brands in the world among others: Coca-Cola, Google, - Disney/Lucasfilm, OnePlus, Slim Jim, Nike, Verizon, Pepsi, Toyota - Performed 20+ load testing sessions, and applied optimizations and improvements ensuring that prepared solutions were capable of handling even tens of thousands of concurrent users - Wrote clean, robust, testable, readable, and maintainable code following OOP practices and patterns - Learned and utilized tens of external services SDKs and APIs to achieve the project goals and to build a broad range of product types among others: - chatbots, multiplayer games and competitions, interactive collectible NFT experience, real-time video chats with emotion analysis helping people with autism

.NET Software Engineer | Team Lead

GFT / Rule Financial•  February 2014 - September 2015•  Łódź

- Managed 3 teams of FE and BE engineers using Agile methods to deliver the best possible software solutions - Developed and delivered several desktop and web applications that met all the client expectations - Maintained and analyzed legacy code, debugged and fixed several critical issues - Wrote reliable, manageable, easily extensible, and testable code together with hundreds of automated tests to achieve its quality

.NET Software Engineer / Product Owner

MFITC / Hilverse•  September 2011 - December 2013•  Łódź

- Managed projects and led several teams in accordance with the principles of SCRUM methodology - Collaborated with the clients to define project functional specifications (User Stories and Given-When-Then scenarios) together with technical requirements - Provided specialized, technical trainings and conducted four editions of the Internship program under the auspices of Microsoft and Lodz University of Technology - Defined and implemented Continous Delivery and automated testing patterns and practices to improve the quality and delivery speed across all company's teams and projects