Multidisciplinary UI/UX, Product, and Graphic Designer with 22+ years of experience helping companies validate, prototype, design, and launch digital products, brand identities, and visual communication systems. I specialize in creating intuitive, engaging, and visually refined user experiences by combining user research, wireframing, prototyping, interface design, branding, and strong visual storytelling. I collaborate closely with C-level stakeholders, product teams, and developers to deliver design solutions that improve usability, support business goals, and contribute to stronger KPIs. I also bring working knowledge of HTML/CSS, Agile methodologies, AI-assisted design workflows, and additional experience in video and photo editing.

Theodore Birbilis

Multidisciplinary UI/UX, Product, and Graphic Designer with 22+ years of experience helping companies validate, prototype, design, and launch digital products, brand identities, and visual communication systems. I specialize in creating intuitive, engaging, and visually refined user experiences by combining user research, wireframing, prototyping, interface design, branding, and strong visual storytelling. I collaborate closely with C-level stakeholders, product teams, and developers to deliver design solutions that improve usability, support business goals, and contribute to stronger KPIs. I also bring working knowledge of HTML/CSS, Agile methodologies, AI-assisted design workflows, and additional experience in video and photo editing.

Available to hire

Multidisciplinary UI/UX, Product, and Graphic Designer with 22+ years of experience helping companies validate, prototype, design, and launch digital products, brand identities, and visual communication systems. I specialize in creating intuitive, engaging, and visually refined user experiences by combining user research, wireframing, prototyping, interface design, branding, and strong visual storytelling.

I collaborate closely with C-level stakeholders, product teams, and developers to deliver design solutions that improve usability, support business goals, and contribute to stronger KPIs. I also bring working knowledge of HTML/CSS, Agile methodologies, AI-assisted design workflows, and additional experience in video and photo editing.

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Experience Level

Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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Language

English
Intermediate
Greek, Modern
Fluent

Work Experience

Product, UI/UX, and Graphic Designer at NSI4
January 1, 2024 - January 1, 2026
Designed UI/UX for gaming and fintech digital products, including: Trinity (UI/UX and design system for a high-frequency trading platform processing 100,000+ decisions/second) and WRS (end-to-end product design for an AI-powered gaming SaaS platform across web, desktop, and in-game add-on).
Senior UI/UX Designer and Graphic Designer at TPL - Third Party Logistics
December 31, 2023 - July 24, 2025
Handled UI/UX and graphic design responsibilities on diverse projects.
Senior UI/UX Designer and Graphic Designer at TPL - Third Party Logistics
December 31, 2023 - July 24, 2025
Worked as a Senior UI/UX Designer and Graphic Designer on various projects.
Senior UI/UX Designer and Graphic Designer at eight8.
December 31, 2022 - July 24, 2025
Led various design projects with focus on user interface and graphic design as a senior designer.
Senior UI/UX Designer and Graphic Designer at eight8.
December 31, 2022 - July 24, 2025
Performed senior level UI/UX and graphic design work on various projects.
Product, UI/UX, and Graphic Designer at TPL - Third Party Logistics
January 1, 2022 - January 1, 2023
Designed UI/UX for four large-scale e-commerce platforms for top brands, delivering end-to-end interfaces from concept to launch.
Freelance UI/UX Designer and Graphic Designer at Various Agencies including e-via SA, Redsharp, Webavenue, WebGreece, Centiva, Itrust
December 31, 2017 - July 24, 2025
Handled large projects offering UI/UX and graphic design services to various digital agencies.
Freelancer UI/UX Designer and Graphic Designer at Self-employed
December 31, 2017 - July 24, 2025
Worked as freelance UI/UX Designer, Graphic Designer, Mobile app, and Product designer, taking on various projects and clients.
Freelance UI/UX Designer and Graphic Designer at Various Agencies (e-via SA, Redsharp, Webavenue, WebGreece, Centiva, Itrust)
December 31, 2017 - July 24, 2025
Worked as a freelance UI/UX Designer and Graphic Designer on various large projects.
Web Designer at Freelancer
December 31, 2017 - July 24, 2025
Worked as a freelance UI/UX Designer, Graphic Designer, Mobile app, and Product designer on various projects.
Product, UI/UX, and Graphic Designer at eight8
January 1, 2015 - January 1, 2022
Led full UI/UX design from concept to launch for 25+ e-commerce platforms. Built custom design systems and optimized checkout flows to improve usability and conversion. Collaborated with stakeholders and teams to deliver end-to-end product experiences.
Freelance UI/UX and Graphic Designer (collaborations) at Multiple agencies (e-via SA, Redsharp, Webavenue, WebGreece, Centiva, Itrust, etc.)
January 1, 2008 - January 1, 2017
Collaborated as a freelance UI/UX and graphic designer on large-scale digital projects with multiple agencies.
Senior UI/UX Designer and Graphic Designer at Protia SA
December 31, 2007 - July 24, 2025
Worked on various projects as senior designer handling UI/UX and graphic design responsibilities.
Senior UI/UX Designer and Graphic Designer at Protia SA
December 31, 2007 - July 24, 2025
Worked on various projects as a Senior UI/UX Designer and Graphic Designer.
Web Designer and Exterior Collaborator at Portal Patras Today
December 31, 2005 - July 24, 2025
Maintained the web page PatrasToday.gr including web designing and advertising banner creations. Designed GIF and SWF banners for digital advertising.
Senior UI/UX Designer and Graphic Designer at WestNet SA
December 31, 2005 - July 24, 2025
Worked as a Senior UI/UX Designer, contributing to various projects within the company.
Web Designer & Advertising Designer at Portal Patras Today
December 31, 2005 - July 24, 2025
Collaborated externally as a web designer for PatrasToday.gr, designing advertising banners and maintaining the website.
Senior UI/UX Designer at WestNet SA
December 31, 2005 - July 24, 2025
Worked as a Senior UI/UX Designer.
Freelance Senior UI/UX and Graphic Designer at Protia SA
January 1, 2005 - January 1, 2007
Delivered freelance UI/UX and graphic design across various digital and branding projects.
Researcher of Performance Information Systems Laboratory (HPCLab) at University of Patras
December 31, 2003 - July 24, 2025
Researched at the High Performance Information Systems Laboratory (HPCLab), contributing to projects and development in the field of information systems.
Researcher at Performance Information Systems Laboratory (HPCLab), University of Patras
December 31, 2003 - July 24, 2025
Conducted research in performance information systems at the HPC Laboratory of the University of Patras.
Freelance UI/UX Designer at WestNet SA
January 1, 2003 - January 1, 2005
Worked as a freelance UI/UX designer for Portal Patras Today, responsible for web design, advertising banners, and the creation of new portal sections.
Researcher (Freelance) at Performance Information Systems Laboratory (HPCLab), University of Patras
January 1, 2001 - January 1, 2003
Contributed to large-scale information systems projects for public sector clients, including the Greek Ministry of Culture and the Greek National Tourism Organisation (EOT). Worked in a research environment focused on performance information systems.

Education

High School Diploma at 1st Professional High School of Patras
January 1, 1992 - December 31, 1995
Technician of Teleinformatics at National Institute of Aigio
January 1, 1998 - December 31, 2000
High School Diploma at 1rd Professional High School of Patras
January 1, 1992 - December 31, 1995
Technician of Teleinformatics at National Institute of Aigio
January 1, 1998 - December 31, 2000
Technician of Teleinformatics at National Institute of Aigio
January 1, 1998 - January 1, 2000
Internship (research lab program) at High Performance Information Systems Laboratory (HPCLab), University of Patras
January 1, 2000 - January 1, 2001
Graduate (high school) at 1st Professional High School of Patras
January 1, 1992 - January 1, 1995

Qualifications

Programmer (Cobol, Qbasic, Basic+, C)
January 1, 1992 - December 31, 1995
Technician of Teleinformatics (Nuwell network, Unix systems, C++, Photoshop, Java)
January 1, 1998 - December 31, 2000
Internship at High Performance Information Systems Laboratory (HPCLab), University of Patras
January 1, 2000 - December 31, 2001
Attending education & courses on web design (HTML, CSS, JS)
January 1, 2000 - December 31, 2004
Programmer (Cobol, Qbasic, Basic+, C)
January 1, 1992 - August 26, 2026

Industry Experience

Software & Internet, Media & Entertainment, Travel & Hospitality, Retail, Professional Services, Gaming, Financial Services, Computers & Electronics