Konstantinos Anastasiou, Designer in Athens, Central Athens, Greece
Konstantinos is available for hire
Hire Konstantinos

Konstantinos Anastasiou

Bio

Konstantinos is one of the rare designers who has lived inside the systems he now designs for. With 15 years in banking and 10+ years in fintech, investment, and AI design, he brings domain authority most designers spend careers trying to fake. His work includes EquitySet (Benzinga Global Fintech Award 2023), Throo (acquired by Euronet), and Oumi, an end-to-end AI training platform. He ships products that are trusted, compliant, and commercially effective, taking them from 0 to 1.

Portfolio

Work Experience

Senior Product Designer

2025 - PRESENT
Oumi.ai
  • Worked as the sole founding product designer at Oumi, an open-source enterprise AI model training platform built by ex-Google and ex-Apple veterans, with Bing as a design partner and coverage from GeekWire, SiliconAngle, and Puck News.
  • Established the Oumi design foundation, including token architecture, component system, and responsive typography scale across four breakpoints, enabling consistent and scalable UI delivery for engineering teams.
  • Translated complex ML workflows, such as training runs, evaluation comparisons, and model deployments, into intuitive interfaces for technical users, reducing cognitive load across the platform.
  • Collaborated cross-functionally through handoff and a weekly release cadence.
  • Led design across eight core platform workstreams as the sole designer — onboarding, getting started, all projects view, results explorer, evaluations comparisons, deployments, settings, and full agent view.
Technologies: AI Agents, Claude Code, Tailwind CSS, Design Systems, UI Design, UX Design, SaaS Design, SaaS, Software as a Service (SaaS), Complex Problem Solving, User Flows, Workshops, UX Workshops, Large Language Models (LLMs), Large Language Model Operations (LLMOps), LLM Designs

Senior Product Designer

2015 - PRESENT
Independent Practice
  • Designed fintech and banking products across regulated domains — investment platforms, payment flows, KYC onboarding, and digital banking — with the most commercially sensitive work protected under NDA.
  • Led UX for AlphaTrust, a B2B regulated fintech platform, designing complex fund navigation, document signing flows, and compliance-ready interfaces for institutional users.
  • Nominated finalist for the 2021 Global UX Design Awards; delivered products across 10+ industries, including fintech, health, IoT, and GovTech, as a Toptal top-3% rated designer.
Technologies: Figma, User Interface (UI), User Interviews, User Experience (UX), UX Research, App UI, Web UI, User Flows, Information Architecture (IA), Fintech, User Testing, Web UI Design, Web UX Design, Websites, Mobile UX, Prototyping, Personas, Interactive UX, UX Wireflows, Annotated Wireframes, Mobile, Information Design, Charts, Web App UI, Online Banking, Investment UX, UX Workshops, Blockchain, Web Platforms, UX Prototyping, UI Prototyping, Product Design, Mobile Design, Mobile App Design, SaaS

Product Designer

2025 - 2026
Mosaic Journal
  • Led full redesign of Mosaic Journal — a Dragon's Den-funded photo journaling app with thousands of active users and journals sold in major UK supermarkets — ahead of significant TV exposure, to convert new users into paying subscribers.
  • Identified the upload flow and checkout moment as the highest churn-risk paths and systematically reduced friction at both, delivering a design system MVP with tokens and components ready for engineering handover.
  • Designed the complete product surface: onboarding, journal feed, upload and editing, album customization, and paywall — across two user modes (One-a-Day and Freestyle), light and dark contexts, and WCAG-ready specs for handover.
Technologies: Figma, Design Systems, Mobile App UI, Subscriptions, Mobile UX, User Onboarding

Lead Product Designer

2025 - 2026
Play-Asia
  • Led design across three distinct product workstreams for Play-Asia, a blockchain Web3 product, an internal game-keys management platform, and a full eCommerce site overhaul, as the sole designer across all engagements.
  • Designed end-to-end UX for a blockchain-based Web3 product under NDA, defining information architecture, user flows, and component patterns for a new product within the Play-Asia gaming ecosystem.
  • Established the design system foundation for the blockchain product, including token architecture, component standards, and interaction patterns aligned with the Play-Asia brand and engineering stack.
  • Redesigned an internal game-keys management tool under NDA, conducting a UX audit and stakeholder workshops to identify pain points, then delivering a streamlined interface that reduced operational complexity.
  • Improved key inventory, assignment, and distribution workflows, translating complex back-end operations into a clear, efficient interface for the Play-Asia operations team.
  • Led the full redesign of the Play-Asia eCommerce platform, overhauling visual design, information architecture, and navigation to modernize the experience for a global gaming audience.
  • Redesigned product discovery and browsing flows, improving category structure, filtering, and search UX to reduce friction across the path to purchase on desktop and mobile.
  • Rebuilt the visual design system for the eCommerce site by establishing new typography, color tokens, component library, and layout grids aligned with the brand's evolution toward a premium gaming destination.
  • Designed the AI agent as a contextual gaming assistant, integrating conversational UX, player analytics, and personalized recommendations for a global eCommerce platform serving millions of users.
Technologies: Figma, Design Systems, Tailwind CSS, Claude Code, Cursor AI, Large Language Model Operations (LLMOps), Blockchain Platforms, LLM Designs

Product Designer

2025 - 2026
Bitfly (Beaconchain)
  • Designed high-density validator explorer experiences for Ethereum and multi-chain environments, improving clarity of staking metrics, performance data, and reward transparency for institutional and retail users.
  • Built modular, data-driven UI components optimized for real-time blockchain updates, ensuring usability under high-frequency transaction and network load conditions.
  • Improved onboarding flows for staking products, reducing cognitive load around technical concepts such as delegation, APR variability, and validator selection.
  • Led UX for crypto transaction monitoring tools, simplifying complex on-chain data (blocks, epochs, attestations, fees) into actionable dashboards used by thousands of daily Web3 participants.
  • Standardized a scalable design system for Web3 infrastructure products, enabling faster rollout of new explorer features across chains and environments.
  • Validated product decisions through behavioral analytics and stakeholder workshops, aligning UX improvements with retention, staking growth, and ecosystem trust metrics.
Technologies: Figma, Blockchain Platforms

Lead Product Designer

2024 - 2025
Intellia by Systemic
  • Designed a full B2B2C white-label investment portal (web + iOS/Android) for Systemic RM — covering portfolio management, mutual funds, private portfolios, KYC onboarding, RM panel, and admin — across four distinct user personas.
  • Built a comprehensive design system from scratch, including design tokens, a full component library (atoms to templates), and responsive layouts across desktop, tablet, and mobile — structured for white-label deployment across investment firms.
  • Delivered full Figma developer handoff with annotated specs, interactive prototypes for six key flows, and bilingual UX writing (English + Greek) for all financial terminology and data visualizations across the platform.
Technologies: Figma, Design Systems, UX Design, Data Visualization, Mobile Design, Dashboards, Web Dashboards, Investment UX, Financial UX

Product UX/UI Designer Lead

2023 - 2025
Intelligent Climate and Energy Solutions Company
  • Led UX across a global IoT product ecosystem for a Fortune 50 leader in climate and energy solutions — redesigning multiple apps deployed across APAC and US markets, serving field engineers, facility managers, and enterprise clients.
  • Established an Atomic Design System adopted by multiple teams across the organization, enabling consistent, scalable UI delivery across a complex multi-product environment with global deployment requirements.
  • Drove alignment across cross-functional stakeholders spanning engineering, product, and business — translating enterprise-scale requirements into compliant, accessible, and commercially effective UX across all touchpoints.
  • Navigated complex stakeholder structures, global accessibility standards, and multi-market deployment requirements as the lead designer on the engagement — operating at Fortune 50 scale and pace.
Technologies: Figma, Mobile Design, UI Design, Design Systems, Mobile App Design, Product Design, UX Research, Design Thinking, Prototyping, UX Design, Tailwind CSS, Large Language Model Operations (LLMOps), LLM Designs

Lead Designer

2023 - 2023
Exemplar Human Services, LLC
  • Led creative discovery sessions to uncover and define business requirements, resulting in a comprehensive project roadmap for future product releases.
  • Conducted a thorough UX audit and design review of the existing MVP, identifying key areas for improvement and presenting actionable suggestions.
  • Designed and validated user flows and wireframes to enhance the application's usability, ensuring a seamless experience for users.
  • Collaborated closely with the product manager to design and estimate user stories, contributing to efficient project management and scope definition.
  • Produced high-fidelity designs ready for development, significantly speeding up the production process and ensuring a high-quality end product.
  • Conducted a comprehensive analysis of user feedback, identifying pain points and outlining a proposal for improvement, which was instrumental in driving user experience enhancements.
  • Successfully utilized Figma for rapid prototyping and user testing, resulting in quick iterations and improvements to the design.
  • Showcased ability to adapt to industry-specific requirements by customizing the web application to align with the specific services provided by individual government agencies.
Technologies: Design Leadership, User Flows, Wireframing, UX Audits, Figma, Rapid Prototyping, User Testing

Lead Product Designer

2022 - 2023
Throo (Acquired by Euronet Worldwide)
  • Designed end-to-end UX for Throo, a QR-based merchant payment platform later acquired by Euronet Worldwide — covering merchant onboarding, transaction flows, dashboard analytics, and the consumer-facing payment experience.
  • Delivered a scalable design system and component library enabling rapid iteration across iOS, Android, and web, maintaining consistency across all merchant and consumer touchpoints.
  • Collaborated with product and engineering to define information architecture, user flows, and edge cases for regulated payment flows, ensuring compliance-ready UX from the first release.
Technologies: Figma, Online Banking, Merchant Banking, Mobile App UI, Mobile UX, QR Codes, Accessibility, Card Payments, Online Payments

Growth Designer

2022 - 2023
Appex Group, Inc.
  • Increased users' paid subscriptions by 86% by delivering a new paywall experience for the Lockdown Privacy and VPN app.
  • Boosted the same app's adoption by 20% by bringing to life a new onboarding experience with meaningful animated instructions, giving value to its users and making the app stand out.
  • Delivered vital features for Allstays Camp and RV that are budgeted to increase revenues from 500,000 users by utilizing feedback from user interviews and working closely with the product team to increase user satisfaction.
  • Grew revenues from multiple touchpoints—such as the web and App Store—by slicing through the previous monetization flow and designing an omnichannel subscription funnel. Business and product teams were over the moon with the impact of the changes.
  • Redesigned the Allstays Camp and RV app's user experience iteratively to provide advanced map interaction, like trip planning, working closely with the developer and product teams to deliver much-requested features for the users.
Technologies: Figma, UX Research, UI Design, User Interviews, User Interface (UI), UX Design, User Experience (UX), Mobile App UI, Onboarding, User Onboarding, User Testing, Usability Testing, Mobile Design, Mobile UX Design, Mobile UX, Prototyping, Personas, App UI, Interactive UX, UX Wireflows, Annotated Wireframes, Mobile, Information Design, User Flows, Charts, Web App UI, UX Workshops, UX Prototyping, UI Prototyping, Product Design, Mobile App Design, SaaS

Fintech UI/UX Designer

2022 - 2023
EquitySet
  • Conducted UX interviews with users and industry experts to discover stock researchers' pain points, needs, and motivations, and provide the ideal experience. The results affected all design process steps and provided a more suitable outcome.
  • Worked closely with stakeholders to coordinate workshops and use wireframes to speed up the process, aligning fast on the overall experience and chart interactions and onboarding developers early on.
  • Formed a modular design with components responsive across devices to make the product scalable. I also developed an aesthetically pleasing color scheme, adaptable to light and dark themes.
  • Supported the product team with my 20+ years of finance background, including selecting relevant information, deciding on the prioritization of information, and proposing a meaningful way to show this.
  • Won the Benzinga Global Fintech Award 2023 for the platform redesign — directly driven by a 98% revenue increase achieved through paywall design and SaaS subscription strategy built in close collaboration with the product team.
  • Designed interactive charts and intuitive table interactions that support complex data sets and empower users to slice through and easily understand the information they seek.
  • Rocked the project's finale with a mobile app experience that intuitively served a large amount of company, stock, index, or industry data to researchers on the go—setting the app apart from its competition.
  • Validated the commercial impact of the redesign with the Benzinga Global Fintech Award 2023 win, recognized across the investment research industry as a significant product achievement for a fintech SaaS platform.
Technologies: UI Design, User Experience (UX), Responsive Web Design (RWD), Fintech, Finance, Data Visualization, Mobile App UI, SaaS Design, Mobile UX, Prototyping, Personas, App UI, Interactive UX, UX Wireflows, Annotated Wireframes, Online Banking, Mobile, Information Design, User Flows, Charts, Web App UI, Investment UX, UX Workshops, Web Platforms, UX Prototyping, UI Prototyping, Product Design, Mobile Design, Mobile App Design, SaaS, Software as a Service (SaaS), Mobile UX Design

UI/UX Designer

2022 - 2022
Steady Platform, Inc
  • Designed the reporting, including the exported PDFs, for partner companies about Income Passport - Steady IQ.
  • Streamlined Income Passport's mobile flow, improving the UX and dealing with edge cases on design.
  • Improved the design system to include a more inclusive design approach.
Technologies: UX Design, UI Design, Web Design, Web UX Design, Websites, Mobile UX, Prototyping, Personas, Interactive UX, UX Wireflows, Annotated Wireframes, Fintech, Online Banking, Information Design, User Flows, Charts, Web App UI, UX Workshops, Web Platforms, UX Prototyping, UI Prototyping, Product Design

Lead UI/UX Designer

2022 - 2022
Steady Platform, Inc
  • Designed a payment system app for a fintech project that enables users to transfer money to individuals or cohorts. This web app allows features like creating groups based on CSV files, setting up planned payments, and managing users.
  • Took part in numerous workshops in design discovery using a phased delivery approach on personas, information architecture, multiple user flows, wireframes, and UI design with a scalable design system.
  • Supported the developers and product manager by bringing solutions to the table, as part of a cross-functional team.
Technologies: Leadership, Fintech, Wireframing, User Flows, User Stories, Design Leadership, Dashboard Design, Dashboards, Finance, Payment APIs, Payment Gateways, Web UI Design, Web UX Design, Websites, Prototyping, Personas, App UI, Interactive UX, UX Wireflows, Annotated Wireframes, Online Banking, Information Design, Web App UI, Web Platforms, UX Prototyping, UI Prototyping, Product Design

Lead UI/UX Mobile App Designer

2022 - 2022
Hub Financial
  • Researched the product's audiences and created personas, information architecture, and user flows, following human-centered design thinking.
  • Designed all the wireframes and user flow for the mobile app to serve financial and insurance advisors on the go.
  • Pushed the team further by proposing solutions for the benefit of the users. These proposals were included in the MVP, resulting in a USP for the app versus the competition.
Technologies: Mobile Design, Design Leadership, Leadership, UX Design, Wireframing, Mobile App Design, Interactive UX, User Flows, Dashboards, Finance, Web UX Design, Websites, Mobile UX, Prototyping, Personas, App UI, UX Wireflows, Annotated Wireframes, Fintech, Online Banking, Mobile, Information Design, Web App UI, Investment UX, UX Workshops, UX Prototyping, UI Prototyping, Product Design, Mobile UX Design

Senior Product /UX/UI Designer

2021 - 2022
Netdata
  • Designed anomalous detection events experience and user flow. Worked on visualization of charts and improvements on user experience based on HEART framework.
  • Used research findings in personal user interviews; Gainsight and Smartlook improved the overall product navigation and overall usability.
  • Designed a new dark theme layout. Also, I implemented accessibility—support for the inclusive design process and improved the iconography.
Technologies: Figma, Accessibility, User Flows, User Interviews, User Interface (UI), User Experience (UX), UX Research, Charts, Interactive UX, App UX, App UI, User Testing, Web UI Design, Web UX Design, Websites, Mobile UX, UX Wireflows, Annotated Wireframes, Information Design, Web App UI, Management, UX Workshops, Web Platforms, UX Prototyping, UI Prototyping, Product Design, SaaS, Mobile UX Design

UX/UI Designer

2019 - 2022
ComeTogether Live
  • Designed end-to-end UX for ComeTogether, a blockchain-powered ticketing platform selected in the top 10 of 500 startups at the Qatar Development Bank accelerator, with deployment at the FIFA World Cup 2022.
  • Designed NFT-based ticket flows including wallet integration, transfer, and resale mechanics — reducing entry friction and eliminating counterfeit risk across festival and live event scenarios.
  • Delivered mobile and web UX across the full ticketing lifecycle — event discovery, purchase, QR validation, and post-event collectible ownership — resulting in a sold-out festival launch.
Technologies: Figma, Mobile Design, Web3, Blockchain, Blockchain Platforms, App UX, Mobile UX, Ticketing, Ticket Design

Senior UX Designer

2019 - 2021
ATCOM SA
  • Worked on the UX design of the largest Greek investment mutual funds platform.
  • Designed the UX of banking and mobile banking solutions for banks in Greece and Cyprus. Important tasks included KYC flow, digital onboarding, mobile loan applications. I conducted multiple user research sessions, conducted personas workshops, and more.
  • Worked on the UX research and design of one of the most known Greek news portal. Tasks included UX research, information architecture, competition analysis, audience review, news consumption personas, user flows, and detailed wireframes at the component level.
  • Did UX research for eCommerce sites including usability audit reports, improvements on information architecture, usability enhancements on search site interactions, check-out processes, and payments.
Technologies: Figma, Fintech, Online Banking, User Testing, Web Design, Web UX Design, Prototyping, Personas, UX Wireflows, Annotated Wireframes, Mobile, Information Design, Web App UI, Management, Investment UX, UX Workshops, Web Platforms, UX Prototyping, UI Prototyping, Product Design, Mobile App Design, SaaS, Mobile UX Design

UX/UI Designer

2019 - 2020
Train Your Pulse
  • Designed a mobile fitness coaching app and analytics dashboard for Train Your Pulse, an iOS SaaS platform for personal trainers and athletes — covering onboarding, session logging, progress tracking, and trainer–client workflows.
  • Built a data-rich coach dashboard with performance charts, athlete progress views, and session planning tools — translating complex training metrics into clear, actionable interfaces for non-technical users.
  • Nominated finalist for the 2021 Global UX Design Awards, recognizing the quality of interaction design and information architecture across the mobile and web experience.
Technologies: Figma, App UX, App UI, Dashboards, Web Dashboards, SaaS, Subscriptions, UI Design, Design Systems, Mobile UX, UX Design

Brand Manager | Senior RM | Area Manager

2009 - 2015
Eurobank
  • Coached and managed a multi-level team of financial advisors and multiple bank branches.
  • Negotiated daily with clients, commercial success in investment, and loans compliance targets.
  • Made an impact on multiple persons in my team; many of them evolved and achieved management positions.
Technologies: Fintech, Online Banking, Prototyping, Personas, Management

Marketing Product Manager

2005 - 2009
Milennum BCP (Greece)
  • Worked on multiple banking products that achieved commercial success in Greece.
  • Acted as a supervisor of implementing bancassurance transactions and contracts in banking CRM.
  • Served as a part of the bank's Risk Assessment Committee - Basel guidelines.
Technologies: Fintech, Online Banking, User Testing, Prototyping, Personas, Management, Web Platforms, Card Payments

Education

2019 - 2021

Master of Arts in Design in Arts and Design

Middlesex University - Middlesex, UK

2007 - 2009

Executive MBA - with Distinction in Organizational Psychology

Hellenic American University - Manchester, New Hampshire - Athens Greece

2002 - 2004

Master's Degree with Distinction and Scholarship in Business Administration

Kingston University - London

2002 - 2003

Diploma in Management Studies in Management Studies

Kingston University - Kingston

1996 - 1998

Developer in Multimedia Applications in Multimedia

Vocational Training - Thessaloniki, Greece

Certifications

SEPTEMBER 2021 - PRESENT

Accessibility: How to Design for All (IDF)

Interaction Design Foundation

DECEMBER 2020 - PRESENT

Mobile User Experience (UX) Design (IDF)

Interaction Design Foundation

NOVEMBER 2020 - PRESENT

UI Design Patterns for Successful Software (IDF)

Interaction Design Foundation

AUGUST 2020 - PRESENT

Human Computer Interaction - HCI

Interaction Design Foundation

NOVEMBER 2019 - PRESENT

Graphic Design Specialization

Coursera

APRIL 2019 - PRESENT

User Interface Design Specialization

Coursera

Skills

Platforms

Figma, Mobile

Other

UX Design, UI Design, UX Research, App UX, UX Branding, Interaction Design (IxD), User Interface (UI), User Experience (UX), Mobile UX, Blockchain, Web Platforms, Prototyping, User Testing, Personas, Information Design, Information Architecture (IA), User Interviews, App UI, Web UI, User Flows, Charts, Workshops, UX Workshops, Investment Banking, Mutual Funds, Web App UI, Fintech, Online Banking, Management, SaaS Design, Software as a Service (SaaS), Dashboards, Onboarding, User Onboarding, Financial UX, Investment UX, Mobile UX Design, UX Prototyping, UI Prototyping, Product Design, Wireframing, Design Systems, Online Payments, User Stories, Data Visualization, Design Leadership, Mobile Design, Mobile App Design, Web Design, Responsive Web Design (RWD), Usability Testing, SaaS, Tailwind CSS, Claude Code, Large Language Models (LLMs), LLM Designs, AI Agents, Digital Wallets, Card Payments, Large Language Model Operations (LLMOps), Accessibility, Interviewing, Investing, Blockchain Platforms, Leadership, Payment APIs, Web UI Design, Web UX Design, Websites, Interactive UX, UX Wireflows, Annotated Wireframes, Compliance, Web Development, Web Dashboards, Landing Pages, Finance, Mobile App UI, Landing Page Design, Dashboard Design, Payment Gateways, Tables, Data, Complex Web Systems, Complex Problem Solving, UX Audits, Rapid Prototyping, Design Thinking, Cursor AI, Subscriptions, Merchant Banking, QR Codes, Web3, Ticketing, Ticket Design, eCommerce, Apple Subscriptions, subscriptions ux, Photo App, Fintech Design

Experience

  • Fintech - 18 years
  • Product Design - 14 years
  • Investment UX - 12 years
  • Mobile UX - 12 years
  • Prototyping - 12 years
  • UX Design - 8 years
  • Figma - 7 years
  • LLM Designs - 4 years
Collaboration That Works

How to Work with Toptal

Toptal matches you directly with global industry experts from our network in hours—not weeks or months.

1

Share your needs

Discuss your requirements and refine your scope in a call with a Toptal domain expert.
2

Choose your talent

Get a short list of expertly matched talent within 24 hours to review, interview, and choose from.
3

Start your risk-free talent trial

Work with your chosen talent on a trial basis for up to two weeks. Pay only if you decide to hire them.

Top talent is in high demand.

Start hiring