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Marius Sienel currently serves as the Digital Marketing Manager at Niedax Group, focusing on global website relaunches, SEO, SEA (Google Ads), content management, Google Analytics, UX and conversion optimization, and marketing automation. Prior to this role, Marius was the Head of Performance Marketing at Miesen & Cie. GmbH, where responsibilities included developing performance marketing strategies for expansion in North Rhine-Westphalia, SEO, and implementing HubSpot for marketing automation. Earlier experience includes project management for online conversion optimization at ekugellager.de, junior marketing management at Unister GmbH, and investor relations management at Unternehmensberatung UBJ. Marius holds a degree in Business Administration from Bonn-Rhein-Sieg University of Applied Sciences.