Antonis Kesentes
Lead Product Designer
Designing scalable systems and intuitive products that empower teams and serve real user needs.
About me
I’m a Lead Product Designer with a strong focus on solving real problems through thoughtful, practical design. I’ve worked across fintech, banking, BaaS, and complex digital platforms, leading initiatives that deliver consistent, accessible, and scalable experiences.
My strength lies in systems thinking, design/dev collaboration, and bringing structure to fast-moving environments. I specialize in building and maintaining global design systems, improving accessibility across platforms, and supporting teams with clear processes and documentation.
Design for me isn’t about decoration. It’s about clarity, usability, and making things work better — for users, for teams, and for the business.
Featured Projects
New e-Wallet Native App
Natech
UX/UI design for a modern digital banking product that connects users for everyday transactions and financial services. Still in progress.
Digital Banking
Native App Design
In Progress
Coming Soon
Youth Banking - Digital Pocket Money Experience
Alpha Bank
Designed from scratch a youth banking experience with dual views and gamified controls. Full ownership from discovery to delivery.
Teen UX
Dual Experience
Product Ownership
Redesign Sports Betting & Casino Website
Winmasters
Redesigned Winmasters’ platform using provider’s design system and brand identity. Focus on UI adaptation, responsive views, and campaign modules.
Sports & Casino UX
Brand + System Integration
Responsive Design
Global Design System
Natech
Created and scaled a design system supporting responsive web and native apps across Core, Retail, Business, and BaaS platforms. Defined tokens, themes, and documentation practices that improved efficiency and consistency across teams.
UX for Dual Audiences
Mobile-first Design
Guerrilla Testing
Coming Soon
Redesign Sports Betting App
OPAP
UX/UI redesign of OPAP’s betting app for clarity, responsiveness, and modular campaigns. Adapted for fast updates and high usage volume.
High-traffic UX
Campaign-ready UI
Mobile-first
Geotechnical Consulting Responsive Website Redesign
Freelance
Freelance project for a geotech firm, showcasing products and software offerings. Conducted competitive analysis and redesigned the full responsive site.
B2B Web Design
Competitor Research
Responsive Design
Mortgage Online Application
Alpha Bank
Redesigned Alpha Bank’s mortgage flow end-to-end, exposing full transparency and eliminating the need for physical visits. Based on real process mapping, usability testing, and A/B iterations.
Mortgage UX
Process Optimization
Usability + A/B Testing
Live Concert Mobile App
Personal Concep App
Personal concept project exploring live event discovery and ticketing. Based on competitor analysis, UX strategy, flows, wireframes, and hi-fi mockups.
Entertainment UX
UX Strategy
Prototype Testing
Highlights Live Streaming - New Feature
Stoiximan
Implemented a new live streaming feature into an existing high-scale sports betting app. Solved constraints through interface design and product-led solutions.
Live Streaming UX
Feature Integration
Design Testing
How I Design
These are the principles that shape my process:
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Design systems for consistency and scalability
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Shared language with developers through documentation and tokens
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Accessibility as a foundation, not a feature (WCAG 2.1 applied)
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Collaborative decision-making with product, dev, and compliance
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Feedback culture, async-friendly workflows, and clarity over complexity
Skills & Tools
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UX/UI Design – Figma, Figjam, Miro
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Design Systems – Tokens, component libraries, documentation
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Prototyping – Figma, Protopie
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Accessibility – WCAG 2.1, inclusive UI practices
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Front-End Collaboration – HTML/CSS, React Native, Javascipt, vue.js, Php knowledge, Dev Mode usage
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Agile Product Design – Jira, Trello, MS Teams, Azure DevOps