What I've been up to in the past years.

Viessmann Climate Solutions SE · Freelance

• Redesigned the PartnerPortal ticket system. Replaced a technical list view with a timeline that actually tells you what is happening.
• Updated the PartnerShop across several touchpoints: one-click purchasing, shipment tracking, CRM integrations and a cleaner navigation.
• Produced app store images for ViParts in 18 languages using Figma variables synced to Google Sheets.
• Planned the token migration path for ViCare from primitive to semantic to Foundation tokens.
• Mapped the ViGuide3 commissioning flow in Flutter from single-device setup to system-wide overview.
• Contributed to the Viessmann Foundation Design System: SemVer process, custom token merge plugins and component proposals.

RTL Interactive GmbH · Freelance

• Worked on the discovery team to redesign how RTL+ presents subscription tiers. Four to five packages, very different value props.
• Designed account management flows for family accounts including sub-accounts and permission levels.
• Optimised breakpoints across the platform for a better mobile experience.
• The work on subscription flows led to better conversions and noticeably fewer support tickets.

Triple A Internetshops GmbH · Freelance

• Designed landing pages, a component library and search experience for the Geske beauty shop.
• Added full RTL support for Hebrew and Arabic to a companion app. Handled text direction at the logic level, not just visually.
• Developed a multi-brand design system strategy and unified the Shopware templates across brands.
• Built a multi-brand Figma system with Token Studio before variables existed natively. Shortened the dev cycle.

ImmoScout24 GmbH

• Redesigned the Realtor Lead Engine using Mouseflow data and A/B tests. Conversion on the core flow went up 25%.
• Led UX for a homeowner dashboard task force. Double diamond research, price tracking, realtor matching and vermieter.de integration.
• Took concepts from click dummy to high-fidelity prototype and supported the developer handoff throughout.
• Every user in the test sessions asked for access to the feature. It went straight into development.

Daimler TSS GmbH

• Designed the Mercedes-Benz car sharing app for iOS and Android, covering authorization, car location and personal car sharing. Launched in 47 countries.
• Built internal developer handoff tooling in Sketch when no external tools were allowed. The main Mercedes design team picked it up.
• Ran design sprints and mentored the team. Introduced Lean UX as the shared way of working.

Parkling GmbH · Freelance

• Designed mobile apps for iOS and Android for a mobility startup.
• Provided UX consulting across various client projects.
• Redesigned websites with a focus on usability and clearer brand presence.
• Facilitated UX workshops to shape the product development process.

Studienkreis GmbH · Freelance

• Developed a new concept and redesigned the homepage.
• Improved the overall user experience as a freelance designer.

crobo GmbH

• Created corporate identity concepts for clients.
• Produced advertising materials across formats.
• Designed mobile apps for iOS and Android.
• Consulted on UX and conversion optimisation.
• Prepared pitch decks and presentations.

Mediengestalter (Digital & Print)

Ernst Litfass Schule

Oct 2011 - Feb 2013 (1 yr 9 mos)