Katarzyna Mizerska

Founder & Managing Director | Cloe & Leo – E-Commerce & Concept Store (Hamburg)

CLOE&LEO | Onlineshop & Concept Store in Hamburg Eppendorf · Hamburg

Present

Founded and built a curated concept store and e-commerce business specializing in sustainable children’s furniture, toys, and lifestyle products. Responsible for the full strategic and commercial direction of the company, including brand positioning, assortment strategy, supplier partnerships, pricing architecture, and market presence across physical retail and digital channels. Established the brand in Hamburg-Eppendorf and developed integrated retail and online sales operations. Represented the business at industry trade fairs and built relationships with European suppliers and partners. Operating at the intersection of brand curation, retail strategy, and hands-on commercial leadership.

Marketing Manager | B2b Medical Devices | International Markets

DNV MEDCERT GmbH · Hamburg, Germany

Led and developed the strategic marketing function for an international certification body in the medical devices sector. - Executed three comprehensive brand relaunches (positioning, messaging architecture, visual identity, website transformation) - Conducted structured market and competitor analyses to strengthen international positioning - Developed and implemented integrated communication strategy (external & internal) - Built and managed a multilingual newsletter program (3 languages, 12,000+ subscribers), including platform migration, content development, and audience growth - Produced educational and regulatory-focused video content explaining certification processes and legal updates, strengthening thought leadership and market authority - Managed global trade fair participation (Europe, US, Asia) - Designed and implemented customer satisfaction and retention programs - Independently managed trademark registrations (Germany & international) - Implemented SEO and content strateg…

Strategic Marketing Advisor | Crowder / Crowdex – Real Estate Crowdlending & Asset Tokenization

Crowder SA

Advised a Polish fintech startup operating in the field of real estate crowdlending and asset tokenization, supporting both traditional loan-based investment models (Crowder) and blockchain-based tokenized asset structures (CrowdDex). - Developed strategic brand positioning within an emerging alternative finance and proptech market - Structured communication architecture for investors, borrowers, and digital asset participants - Contributed to website strategy, messaging framework, and visual identity - Supported the development of explainer videos and digital communication assets to clarify complex financial and tokenization models - Strengthened market understanding and brand credibility in a regulated and innovation-driven environment Focus: strategic positioning, investor communication, and digital brand development in fintech and real estate finance.

Marketing Assistant | B2b Medical Devices | International Markets

Medcert GmbH · Hamburg, Germany

Joined the organization at an early stage and established the foundational marketing structures within a growing international certification body. - Built core marketing processes and materials from the ground up - Developed initial brand communication assets and corporate documentation - Supported early-stage brand positioning and market visibility initiatives - Coordinated marketing activities across departments - Contributed to trade fair preparation and external communications - Laid the operational and structural groundwork for the later development of the formal marketing function.

International Brand Management |(B2b Professional Haircare)

Hans Schwarzkopf&Henkel, Hamburg, Germany · Hamburg, Germany

Supported the International Brand Management team for two professional salon brands within a global haircare organization. - Contributed to brand development and international positioning initiatives - Conducted market and competitive research across key markets - Coordinated packaging development and brand asset updates in collaboration with external agencies - Supported product launches and communication material development for professional salon distribution - Independently covered Junior Brand Manager responsibilities during temporary absence, managing day-to-day brand coordination - Exposure to structured international brand management within a B2B professional beauty environment.