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Tomasz Marciniak is a seasoned technology professional with extensive experience in JavaScript and front-end development. Currently serving as a Senior JavaScript Engineer at Hero Journey Club since May 2023, Tomasz previously held similar roles at Picsart and William Hill, where contributions included developing the Betslip for the Sportsbook project and guiding junior colleagues. A notable background includes leadership positions in frontend development at Addison Global and GFT Poland, and work on various high-profile projects using modern technology stacks such as React, RxJS, and JavaScript. Tomasz holds a Master of Science in Computer Science from Uniwersytet im. Adama Mickiewicza w Poznaniu, further enhanced by studies at Vrije Universiteit Amsterdam.