Yavus Kus-Lead Usability Engineer | UX Architect | Design Systems
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Experience
Lead Product Designer - Freelance
LUXHUB
- End-to-end UX/UI design for complex B2B platforms and merchant portals in the European FinTech and Open Banking sector
- Concept and optimization of intuitive user and data flows to simplify regulatory and financial processes
- Building, scaling, and maintaining component-based design systems to ensure a consistent, modern brand identity across all platform products
- Close cross-functional collaboration with product management, engineering, and stakeholders to translate business requirements into best-in-class interface patterns
Lead Product Designer - Freelance
JUPUS
- End-to-end product design (web & platform)
- UX strategy and information architecture
- Building and further developing a scalable design system
- Mentoring and developing designers
- Close collaboration with product and tech teams
Senior Product Designer - Freelance
Pro7 Sat1 Gruppe
- Redesign of the agency website and extensive adjustments in the marketing area
- Creation of campaigns for the agency's clients
Senior Product Designer - Freelance
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 competitive analyses and presenting key insights and optimization strategies directly to the CEO
- Creating story maps to reduce complexity and structure the overall product architecture
- Developing numerous wireframes and prototypes for new features as well as the relaunch of the merchant portal
- Close collaboration with marketing to improve sales assets as well as investor and sales pitch decks (Google Slides)
- Hands-on support in implementation with a focus on pragmatism, scalability, and brand consistency
- Applying UCD methods to improve onboarding and payment experience
- Conducting usability evaluations and turning the findings into concrete 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, with a focus on UX in a highly complex B2B banking environment
- Long-time responsible designer for the SOFORT online payment experience — including UI redesign, UX improvements, and the launch of a standalone app
- Worked across the full Klarna app ecosystem, especially 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 clients such as Meta (Facebook/WhatsApp), Lime, and Nike to implement tailored Open Banking integrations
- Close collaboration with product, engineering, and partner management teams to align technical, business, and user-centered needs
- Applied user-centered design processes, including personas, journey mapping, and iterative prototyping
- Planned and ran usability tests to validate flows and reduce friction in identity and payment journeys
- Contributed to accessibility-aware interface patterns within company-wide design systems
Co Founder
Zahlmal!
Digital platform for peer-to-peer payments with integration of SOFORT bank transfer and Stripe.
Head of Design
SHOPGATE
- Responsible for building and leading the design team across product and marketing
- Concept and UI/UX design of a mobile shopping app for iOS & Android, including prototyping and ongoing usability optimization
- Developed a company-wide design system to ensure a consistent brand experience and scalable design workflows
- Close collaboration with product management, including taking on some product owner tasks (roadmapping, feature definition)
- Direct B2B customer contact for custom app solutions, presentations, and project coordination
- Designed all marketing graphics and assets (online & offline campaigns, landing pages, sales materials, etc.)
- Visual concept and execution of international trade show appearances in Germany and the USA
Industry Experience
See where this freelancer has spent most of their professional time.
Experienced in Retail, Banking and Finance, Information Technology, Cosmetics, Advertising, and Media and Entertainment.
Business Area Experience
See which departments and functions this freelancer has contributed to most.
Experienced in Marketing, Product Development, Information Technology, Sales, Operations, and Research and Development.
Summary
Lead usability and UX specialist with extensive experience in enterprise platforms and regulated environments such as FinTech and banking.
Extensive experience in building and developing design systems and Figma libraries: from token architecture and component governance to variant and state logic, as well as handoff and adoption across multiple product teams.
Skills
Tools
- Adobe Creative Suite (Ps, Ai, Id)
- Figma (Libraries, Variables/Tokens, Auto Layout, Prototyping)
- Sketch
- Usability Testing Tools
- Zeplin
- Marvel
- Miro
- Jira
- Linear
- Microsoft 365
- Notion
- Ai Tools (Chatgpt, Claude / Claude Code, Gemini, Cursor, Framer)
Core Competencies
- User-Centered Design (Ucd)
- Context Of Use Analysis & Persona Creation
- Human-Centered Design According To Din En Iso 9241-11 / 9241-112 / 9241-210
- Interaction Design
- Cross-Platform Ui/Ux Design For Web & Mobile (Ios/Android)
- Information Architecture & Complex Data And Process Mapping
- Rapid Prototyping & Wireframing
- Usability Testing (Concept, Execution & Evaluation)
- Heuristic Analysis
- B2b & Enterprise Platforms (Fintech / Open Banking / Saas)
- Accessibility (Accessibility Patterns)
- Html5 / Css3 / Js (For Functional Prototypes)
Methods & Ux Research
- Moderated And Unmoderated Usability Tests
- User Journey Mapping
- Consideration Of Accessibility (Bitv/Wcag Knowledge)
- Stakeholder Workshops And Ux Reviews
Languages
Statistics
Experience
Global Experience
Expertise
Profile
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Actual rates may vary depending on seniority level, experience, skill specialization, project complexity, and engagement length.
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