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Marek Kowalski has had a diverse range of work experience in the software development field. Marek currently serves as the Chief Technology Officer (CTO) at Rumble Fish Software Development, where they shape the company's technological direction and oversees key initiatives. Marek also takes care of the professional growth of the engineers, providing mentorship and staying updated on the latest IT trends and solutions. Rumble Fish specializes in Fintech Software Development, DeFi Development, AWS Cloud Solutions, and Custom Software Development.

Prior to their role at Rumble Fish, Marek worked as the Chief Architect at Acquire, where they focused on building a PostgreSQL database and integrating the Nest.js server with industry-standard vendors, while also managing Amazon devops.

Marek served as the Chief Technical Consultant at TTFM Labs, starting in October 2020.

Before that, they were a Tech Lead and Co-Founder at Pragmatic Coders from November 2014 to October 2017.

Marek also worked as a Tech Lead at Credex from January 2011 to November 2014.

From May 2008 to January 2011, they worked as a Senior Software Developer at Flumotion.

Marek began their career at Code Sprinters, where they worked as a Senior Software Developer and Certified ScrumMaster (CSM) from May 2004 to May 2008.

Marek Kowalski pursued their education at Jagiellonian University from 2004 to 2009, earning a master's degree in theoretical Physics.