- End-to-end product design for fintech applications across web and mobile, with Project Managers and Engineers from discovery through delivery.
- Primary Product Designer across multiple initiatives — owning UX/UI decisions against customer needs, accessibility, business priorities and technical feasibility.
- Payment experiences, merchant tools, onboarding, dashboards and developer-facing platforms for Worldline, Euronet, Cardlink, Nexi, EDPS and NBG Payments.
- Design systems and component libraries in Figma to improve consistency and engineering collaboration.
- Applied PSD2, KYC, 3DS and WCAG 2.1 requirements to simplify complex financial workflows.
- Production-ready prototypes and developer specifications within short product cycles.
Product Designer · Fintech · Payments · Design Systems
Ioanna Zarkadoula
Product Designer for fintech and payment products — from discovery and research through production interfaces and engineering handoff.
Portrait
Product Designer
Index
Selected Case Studies
Product decisions documented as case studies.
Fintech · Mobile · Production
Merchant Payments
Usability and consistency improvements in a production payment application amid evolving priorities and constraints.
Read case study →Fintech · Checkout · Production
E-commerce Checkout Experience
Checkout redesign for a production payment platform — clarity, consistency and buildable change.
Read case study →Design System · DevEx · Confidential
Developer Portal
Design system, developer experience, and information architecture for a payments developer portal.
Coming soonFintech · End-to-end
Green Helios
Financial management for short-term rental hosts — designed and built end-to-end across two architectures.
Read case study →Practice
Areas of Practice
Product Design
Product discovery, UX strategy, user research, information architecture, user flows, interaction design, wireframing, high-fidelity prototyping, design systems, accessibility (WCAG).
Fintech
Payment products, merchant experience, payment flows, onboarding, PSD2, KYC / AML, 3DS, open banking.
Collaboration
Product thinking, cross-functional collaboration, developer handoff, Agile (Scrum), design reviews.
Technical
Figma, HTML, CSS, Java, GitHub.
Experience
Experience
Education
Education
2024 — Present
Mediterranean College (University of Derby)
BSc (Hons) Computer Science · Expected 2027
2021 — 2023
IEK Delta
Diploma in Graphic Design
Credentials
Certifications
- Foundations of User Experience (UX) Design · Google
- Build Wireframes and Low-Fidelity Prototypes · Google
- Start the UX Design Process: Empathize, Define, Ideate · Google
- Vellum Web and E-Shop Certificate · Vellum
Languages — Greek: Native · English: B2