Yavus K.-Lead Usability Engineer | UX Architect | Design Systems
Check rate
Experience
Lead Product Designer
LUXHUB
Open banking and payment platform in the European banking sector
- Conceptualization of my.LUXHUB: a unified customer portal that brings together several existing portals with central navigation and identity, including an audit and redesign of legacy interfaces
- End-to-end design of the FIGW (Fraud Intelligence Gateway) and Wero portals: data-intensive workflows, status and error states, batch operations
- Token-based Design System with semantic states and developer handoff documentation as a reference for all platform products
- Multilingual UX copy (DE, EN, FR) for payment-critical and regulatory flows
- Close collaboration with product management, engineering and stakeholders in a four-person design team
Lead Product Designer
JUPUS
LegalTech, AI-supported platform for law firms
- End-to-end product design for web and platform, UX strategy and information architecture
- Development of an AI assistant, chat, database and portal layer
- Building and further development of a scalable Design System
- Co-creation of an AI-supported design workflow: Figma as the binding design foundation, followed by prototyping and code-based Design System development
- Mentoring designers, close collaboration with product and tech teams
Senior Product Designer
ProSiebenSat.1 Gruppe
- Redesign of the agency website and extensive adjustments in the marketing area
- Creation of campaigns for agency clients
Senior Product Designer
Brite Payments
- Building and scaling a new component-based Design System to unify the UI across all Brite products
- Leading the complete redesign of the existing Brite Payments product, including UX optimization for smooth financial user flows
- Conducting competitor analyses and presenting key insights and optimization strategies directly to the CEO
- Creating story maps to reduce complexity and structure the entire product architecture
- Developing numerous wireframes and prototypes for new features and the relaunch of the merchant portal
- Close collaboration with marketing to optimize sales assets as well as investor and sales pitch decks (Google Slides)
- Hands-on support during implementation with a focus on pragmatism, scalability and brand consistency
- Applying UCD methods to improve the onboarding and payment experience
- Conducting usability evaluations and translating findings into specific design improvements
Co-Founder
SHOPVISE.de
Online shop for exclusive premium skincare products.
Senior Product Designer / Design Lead Open Banking
Klarna Bank AB
- Lead Designer for Klarna's Open Banking product KOSMA, focusing on UX in a highly complex B2B banking environment
- Long-term responsible designer for the SOFORT online payment experience – including UI redesign, UX optimizations and the launch of a standalone app
- Worked across the entire Klarna App Ecosystem, particularly in payouts, transactions and account linking (including integrations with SOFORT, Klarna and third-party providers)
- Developed and maintained the KOSMA website and built a dedicated design system aligned with Klarna's global design system
- Translated complex banking processes and regulatory requirements into intuitive, clearly structured interfaces for end users and enterprise partners
- Worked directly with enterprise customers such as Meta (Facebook/WhatsApp), Lime and Nike to implement custom Open Banking integrations
- Worked closely with Product, Engineering and Partner Management teams to align technical, business and user-centered requirements
- Applied user-centered design processes, including personas, journey mapping and iterative prototyping
- Planned and conducted usability tests to validate flows and reduce friction in identity and payment journeys
- Contributed to accessibility-aware interface patterns within company-wide design systems
Owner
AI Design Studio
Studio for AI-powered product design
Co Founder
Zahlmal!
Digital platform for peer-to-peer payments with integration of SOFORT Überweisung and Stripe.
Head of Design
SHOPGATE
- Responsible for building and leading the design function across product and marketing
- Conceptualized and designed the UI/UX of a mobile shopping app for iOS & Android, including prototyping and continuous usability optimization
- Developed a company-wide design system to ensure a consistent brand experience and scalable design workflows
- Worked closely with Product Management, including taking on some Product Owner responsibilities (roadmapping, feature definition)
- Direct B2B customer contact for custom app solutions, presentations and project coordination
- Designed all graphic assets for marketing (online and offline campaigns, landing pages, sales materials, etc.)
- Developed the visual concept and execution of international trade fair appearances in Germany and the USA
Industry experience
See where this freelancer has spent most of their professional time.
Experienced in Information Technology, Retail, Banking and Finance, Cosmetics, Professional Services, and Media and Entertainment.
Business area experience
See which departments and functions this freelancer has contributed to most.
Experienced in Product Development, Information Technology, Sales, Research and Development, Marketing, and Project Management.
Summary
For over 14 years, I have been designing complex B2B platforms, portals and expert applications, most recently in regulated environments such as banking, open banking, payments and legal tech.
My strength: translating technical depth from data flows, interfaces and compliance into interfaces that specialist users can operate safely and quickly, and building Design Systems that work across multiple product teams.
What I bring to digital industrial products
Experience from platforms with high requirements for data, security and scalability, transferable to digital products and services in industrial environments.
Turning many interfaces into one platform
At LUXHUB, I am bringing an established portfolio landscape together into a unified customer access point with central navigation and identity. The same pattern works when digital services from multiple business areas need to appear under one roof.
MY.LUXHUB, AUDIT AND REALIGNMENT OF LEGACY PORTALS
Complex data for specialist users
Fraud monitoring, transaction status, batch processes: interfaces where experts need to make the right decision under time pressure. Transferable to remote service, test field management and machine data.
FIGW FRAUD INTELLIGENCE GATEWAY, WERO MERCHANT PORTAL, KLARNA KOSMA
Design Systems that work across teams
Token architecture, component governance, variant and state logic through to handover. This enables multiple product teams to deliver consistently and faster, even across different brands.
KLARNA, BRITE PAYMENTS, SHOPGATE, JUPUS, LUXHUB
AI from idea to live product
I build AI-supported prototypes and products myself: from the Figma concept through Claude Code, Cursor & Co. to live operation. This significantly shortens the path from hypothesis to testable result.
MAVI, AI INTAKE TOOL FOR CRAFT BUSINESSES, AI-BASED COSMETICS CRM, ZAHLMAL (P2P PAYMENTS) -AI DESIGN STUDIO PRODUCTS
At home in regulated environments
Eight years of banking and open banking at Klarna: guiding users under strict security and compliance requirements, with thorough documentation. Methodologically based on DIN EN ISO 9241, with a focus on accessibility (BITV, WCAG).
Skills
Product And Ux
- User-Centered Design
- Human-Centered Design According To Din En Iso 9241-11, -112 And -210
- Context Of Use Analysis
- Personas
- Information Architecture
- Data And Process Mapping
- Interaction Design For Web, Desktop, Ios And Android
Design Systems
- Figma Libraries
- Variables And Design Tokens
- Variant And State Logic
- Auto Layout
- Publishing And Versioning
- Documentation
- Governance
- Coordination With Frontend
- Adoption Across Multiple Teams
Clients And Brands
- Klarna
- Sofort
- Luxhub
- Brite Payments
- Meta
- Nike
- Lime
- Apple
- Samsung
- Vodafone
- Rabodirect
- Prosiebensat.1
- Ard
- Rtl
- P&G
- Pampers
- Olaz
- Nestlé
- Nescafé
- Weleda
- Symbio Pharm
- Deichmann
- Rossmann
- Wagner
Research And Validation
- Moderated And Unmoderated Usability Tests
- Heuristic Analysis
- User Journey And Story Mapping
- Stakeholder Workshops
- Ux Reviews
- Accessibility According To Bitv And Wcag
Prototyping, Ai And Tools
- Functional Prototypes In Html, Css And Js
- Claude Code
- Cursor
- Framer
- Chatgpt
- Gemini
- Figma
- Sketch
- Adobe Creative Suite
- Miro
- Jira
- Linear
- Notion
- Microsoft 365
Languages
Statistics
Experience
Global experience
Expertise
Profile
Frequently asked questions
Have questions? Find more information here.
Yavus is based in Staufenberg, Germany and can operate in on-site, hybrid, and remote work models.
Yavus speaks the following languages: German (Native), English (Advanced), French (Advanced).
Yavus has at least 14 years of experience. During this time, Yavus has worked in at least 7 different roles and for 9 different companies. The average length of individual experience is 2 years and 6 months. Note that Yavus may not have shared all experience and actually has more experience.
Based on recent experience, Yavus would be well-suited for roles such as: Lead Product Designer, Senior Product Designer, Co-Founder.
Yavus's most recent position is Lead Product Designer at LUXHUB.
In recent years, Yavus has worked for LUXHUB, JUPUS, ProSiebenSat.1 Gruppe, Brite Payments, and SHOPVISE.de.
Yavus is most experienced in industries like Information Technology, Retail, and Banking and Finance. Yavus also has some experience in Cosmetics, Media and Entertainment, and Professional Services.
Yavus is most experienced in business areas like Product Development, Information Technology, and Sales. Yavus also has some experience in Research and Development, Marketing, and Project Management.
Yavus has recently worked in industries like Information Technology, Cosmetics, and Retail.
Yavus has recently worked in business areas like Product Development, Sales, and Research and Development.
Yavus is immediately available part-time for suitable projects.
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Average rates for similar positions
Rates are based on recent contracts and do not include FRATCH margin.
The average daily rate is the mean of all daily rates from recent contracts of comparable freelancers on our platform.
The median daily rate is the middle value of all daily rates — half of comparable freelancers charge less, half charge more. Unlike the average, it is barely affected by outliers.
Calculated based on our freelancers’ daily rates as of 16 Oct 2026. Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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