Usability Testing Experts in Berlin

• Leading UX for a Property Management System, an all-in-one solution for vacation rental agencies and tourism regions, covering marketing and rental of holiday apartments and houses
• UX audits, conception, and implementation of UX strategy with a focus on regulatory, security, and user-centered requirements
• Advising C-level stakeholders on UX strategy and design best practices
• Planning and conducting research with agencies and property owners
• Design system strategy and definition of UX architecture

• Leading end-to-end UX for two AI SaaS products in closed beta, including LLM-interaction design, prompt-UX, and human-in-the-loop patterns with commercial distribution signed for launch in Q3 2026
• Built a self-built LLM reframing and RAG-correction pipeline powering multi-profile CV and case-study generation in production use
• Shipping real code alongside research, including Three.js/GLSL portfolio work, Figma-API tooling, and a Chrome MV3 extension for session-sync automation

• Lead Product Owner role for the BFSG pilot journey “Search and Book” across web and app, focusing on digital accessibility, UX, conversion, and regulatory implementation.
• Created and prioritized the product backlog; derived user stories and acceptance criteria from legal standards (BFSG, WCAG 2.1)
• Developed a product vision that combines digital accessibility, user-centered UX, and conversion optimization for the booking journey
• Cross-stream release management and quality assurance across the entire web and app area, including go/no-go decisions, rollout, and user acceptance tests
• Coordinated and prioritized with Legal, Compliance, external BFSG consultants, UX, Development, Marketing, and Management
• Conducted user research as well as usability and accessibility tests (including screen readers and keyboard navigation) and prototyping with UX/UI
• Defined KPIs to measure accessibility, conversion, and user guidance
• BFSG pilot journey “Search and Book” successfully delivered: first accessible features rolled out and the foundation for a long-term BFSG-compliant booking journey established
• Established sustainable process integration through close collaboration with consulting partners and internal teams

• Designing UX for a B2B AI SaaS platform covering the full software development lifecycle, including an orchestration transparency panel showing users which AI model is active at each stage, reducing AI opacity and building user trust in multi-model workflows.

Strategic Marketing / New Customer Acquisition (B2B):

• Market and competition analysis: Identified competitors, developed evaluation grids, sketched provider landscape with potential customers, competitors and partners
• Concept for a cross-media, personalized multi-touch campaign
• Developed the multi-touch strategy in different variants with several stages, defined touchpoints, target companies and target people, developed the ideal customer profile and contact ideas
• Designed all individual measures: developed concepts for letters, postcards, landing pages, emails, phone calls and downloads
• Visualized the logic of the contact sequences (flowchart)
• Described the distinction from "account-based marketing"
• Implementation planning: Researched providers for packaging, shipping and landing page software, negotiated terms, recommended tools and partners

Social Media Marketing:

• Target categorization, definition and recommendation for action
• Review and selection of channels
• Concept for channel management
• Developed an 11-week editorial plan (Instagram & LinkedIn)
• Created, implemented and published image and video posts
• Campaign launch, ongoing monitoring and optimization

Search Engine Optimization (SEO):

• Website audit with indexing check
• Ranking, backlink, traffic and competition analysis
• Analyzed search and user behavior
• Consulting on SEO risks during relaunches with domain changes
• Keyword research and recommendations for action

• Led backlog prioritization for a $90M automotive SaaS product, ensuring alignment with business objectives and customer satisfaction.
• Led customer-facing product enhancements, leveraging data-driven insights and operational analytics to improve fulfillment performance, optimize logistics processes, and deliver measurable customer value.
• Delivered measurable business impact by improving product fill rate by 10–15% through optimized order fulfillment strategies.
• Led a 12-member cross-functional team in Agile/Scrum environments to deliver high-quality product increments on time.
• Collaborated with global stakeholders, engineering teams, and business partners across US & EU environments
• Expanded OEM partner ecosystem by onboarding from 8 to 14 partners (+75%), increasing integration and platform reach.
• Delivered a feature enabling size-restricted part sales, contributing to 7.1% revenue growth and reducing OEM costs by approximately $2.68M annually.
• Managed API integrations and data interfaces by gathering requirements, defining data mappings.
• Defined and tracked OKRs focused on growth, reliability, operational efficiency, and delivery performance.
• Utilized analysis techniques to derive actionable insights from trend analysis using large datasets and support strategic decision-making.
• Conducted UAT, A/B testing, regression testing, and usability validation to ensure quality delivery and improved user experience.

• Freelance product owner, scrum master and agile coach in various projects spanning from local agencies to multinational corporations in diverse industries.

• Last projects:

• Adevinta: Technical Project Manager responsible for coordination of several sub-workstreams building the world’s largest classifieds multi-tenant platform.

• Aroundhome (a ProSiebenSat.1 company): Product Manager implementing and verifying on the business side a concept for digital qualification of user requests for matching service providers.

• Peek & Cloppenburg Düsseldorf: Product Manager Mobile advising on and guiding the rebuild of Android and iOS apps.

• Visual Meta GmbH (an Axel Springer company), Berlin: Director Product co-leading the Product & Engineering department together with the Director Engineering.

• Responsibilities at Visual Meta GmbH:

• Define and deliver a 3–5 year horizon product strategy including a product vision & mission connecting to existing company strategy and strategies from adjacent departments.

• Refine an existing OKR process together with OKR master and directors of other departments to increase focus and outcome.

• Support the Director Engineering in creating a platform transformation strategy to transform a monolithic on-premise tech stack into a service-oriented, cloud-based architecture and establish a domain-based organizational setup.

• Accountability for a motivated and talented team of 5 head-level colleagues and 17 operational team members from product management, data and UX/UI design.

• Key achievements at Visual Meta GmbH:

• Defined and delivered a 3–5 year horizon product strategy including a product vision & mission.

• Increased focus within OKR process by moving from 10 company-level objectives to 2 and from several hundred team-level key results to a few dozen.

• Created a career path framework for the product team defining roles and responsibilities from junior to head level positions.

• Concept and implementation of data-heavy platforms for enterprise customers
• Design of complex AI-based interactions (chatbots, voice control, semantic search)
• Stakeholder management with more than 10 participants in cross-functional teams
• User research: interviews, usability tests, value validation
• Definition of quality metrics and execution of value analyses

Tools & methods: Figma, Adobe XD, Miro, Chat GPT, Claude | Scrum, Kanban, SAFe, Lean UX

Selected clients: VW Group, Volkswagen, BMW, Cariad, ABUS, Gieseke & Devrient, Hamburg Senate Chancellery, German Red Cross, Deutsche Bahn, Immoscout24, Relynk

• Led end-to-end discovery and exploratory research to assess user needs, market readiness, and product viability for a workflow management and collaboration proposition
• Identified structural misalignment between concept assumptions and real engineering workflows, preventing premature delivery escalation and investment exposure
• Demonstrated through research evidence that the initial proposition was premature, preventing delivery escalation
• Reframed the value proposition based on evidence and initiated a renewed discovery cycle grounded in observed field practices
• Designed research plans and synthesis frameworks to inform roadmap prioritisation and reduce delivery risk
• Contributed to research operations setup, clarifying team roles and collaboration patterns to support continuous discovery
• Supported alignment between product, delivery, and leadership stakeholders through structured insight communication
• Scale: global platform launched as Think Hub (EU, UK, US, Asia)

I run my own freelance agency based in Berlin and help startups and teams.

• I helped 100+ businesses achieve the digital products they wanted.
• Took ownership of the design process, collaborating with other teams.
• Conducted design thinking, user research, and competitive analysis.
• Developed design concepts, wireframes, and high-fidelity prototypes.
• Optimized websites and their conversion rates to reach more clients.
• I help clients in tech, hospitality, luxury, real estate, and professional services.
• I work with long-term products and clients like Accor, Corso Da Vinci, Webwavers, and ImmoTrust.

Conceptualizing and developing AI-powered app MVPs from the first idea to a working product. I combine UX strategy with modern AI and no-code tools — especially Claude and Claude Code, where I work directly in the terminal on real code (React, Vite), complemented by Figma, Bolt.new, and Base44 — to quickly validate and build product ideas. Personal platforms: Nutrycoach.ai (AI nutrition coaching with role-based dashboards for clients, coaches, and admins, AI meal analysis, and a scalable design system) and LuxuryBandit (content/creator app). This led to my own practice 'AI-assisted App Strategy', which combines human creativity, UX logic, and intelligent automation.

• Exploring how design systems in Figma need to evolve to work reliably with AI across design and code.
• Prototyping workflows around Figma design-to-code, deterministic component generation, source-of-truth models, and system consistency.
• Teaching Screen Design and Web Development at Hochschule Kaiserslautern.
• Selected consulting and design work.

• Designing digital experiences for a diverse range of companies and startups.
• Helping them with product discovery, user experience research and strategies and transforming concepts into visually compelling and functionally robust digital solutions and systems.
• Ensuring a seamless blend of aesthetics and functionality.

• German emergency service management software for veterinarians.
• Designed end-to-end scheduling flows for complex availability logic at scale, directly applicable to AI-driven matching flows and multi-state candidate journeys.
• Built the entire design system from scratch, defining component architecture and scalable UI patterns across web and mobile.
• Improved the dashboard via user research and A/B testing, driving a 67% increase in user adoption and 85% boost in client satisfaction.