Usability Testing Experts in Berlin

I served as the Lead Designer for two cross-functional teams at Casavi, a software platform for property managers. Casavi is a central platform for all aspects of digital property management, which streamlines operations and business processes.

SmartTask: The team focuses on ticket management, workflow automation, AI integration, enhancing communication between property managers and their clients.

Customer app/portal: The team is dedicated to fostering community engagement among residents of managed properties. The customer portal in combination with the Casavi app solves the challenges for property and facility managers.

My role spans the full design lifecycle, covering UX/UI design, user research, usability testing, and strategic design planning, across Casavi's web platform, mobile app, and customer portals. Each team comprises around 10 members, including a project manager, designer, developers, and QA testers. I am also responsible for the accessibility assurance of the whole product.

Design unit role: In addition to my core responsibilities, I actively contribute to the development and maintenance of the company's design system and style guide ensuring consistency and scalability across all products. Mentor junior designers is my official and moral responsibility.

Strategic Marketing / New Customer Acquisition (B2B):

• Market and competitor analysis: Recorded competitors, developed evaluation matrices, outlined the provider landscape with potential customers, competitors and partners
• Designed a cross-media, personalized multi-touch campaign
• Developed the multi-touch strategy in various multi-stage versions, determined touchpoints, target companies and target persons, developed ideal customer profile and contact ideas
• Designed all individual measures: Developed concepts for letters, postcards, landing pages, e-mails, phone calls and downloads
• Visualized the process 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:

• Goal categorization, definition and recommendations for action
• Review and selection of channels
• Design of channel management
• Developed an 11-week editorial plan (Instagram & LinkedIn)
• Developed, 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 competitor analyses
• Analyzed search and user behavior
• Consulting on SEO risks during relaunches with domain changes
• Keyword research and recommendations for action

• 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

• 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.

• 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

Product ownership for the new bonus component: a fully digital rewards program in the customer app, going live on 1.1.2027.

• Translated requirements from the business team, app team, and development into epics and stories, and managed delivery
• Designed interfaces between the app, Python backend, and health insurance systems (mkk API, 21c, d.3)

• Owned end-to-end Product Management and Strategy for a B2B SaaS platform, from customer discovery and problem definition to roadmap, launch, and lifecycle optimization.
• Drove competitive analysis, customer insights, and sales analytics, identifying growth opportunities that improved product fill rates by 10–15%.
• Owned roadmap and backlog prioritization, balancing customer value, business impact, technical feasibility, dependencies, and strategic goals.
• Led a 12-member cross-functional Agile team across Product, Engineering, QA, Design, Sales, and business functions, ensuring aligned and high-quality delivery.
• Built KPI and product performance frameworks using Power BI, Excel, CRM, and Pendo to measure adoption, engagement, conversion, and business impact.
• Led API integrations and partner initiatives across US and Europe, expanding the partner ecosystem by 75% and enabling scalable B2B workflows.
• Led AI and automation initiatives that improved operational efficiency by 75–80% and reduced manual effort by approximately 15 minutes daily.
• Partnered with Sales, Customer Success, Marketing, Design, and Engineering to validate customer needs, launch products, improve UX, and drive adoption.

• 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

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.

• Interim Product Owner for two new applications as part of the introduction of a new bonus points program within the entire Rewe Group
• Coordination of cross-team planning (initiative management) and implementation
• Responsibility for product vision, roadmap, backlog and stakeholder management within an agile scaled product development team
• Successful Go Live with both applications on 2024-09-24

• 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.

• Leading mixed-methods discovery for the adidas Running App, using interviews, surveys (incl. choice-modeling), and AI-powered market/app-review intelligence to surface user needs and engagement opportunities.
• Partnering closely with Product, Content Storytelling, CRM, and Analytics teams to translate insights into product direction, segmentation opportunities, and rapid experimentation.
• Synthesizing extensive internal and external research to map knowns, identify critical knowledge gaps, and build an evidence-based research roadmap that supports continuous discovery and optimization.
• Championing AI-supported research practices by guiding cross-functional teams in leveraging AI for faster user feedback synthesis, market intelligence, and rapid workflows.

• Collection of user stories across the whole platform, leading the redesign process.
• Dashboard redesign based on user research.
• Establishing a workflow for kickoff sessions as well as planning the way of working & collaboration across several teams and disciplines.

• 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