Available to hire
I’m Theodore Birbilis, a multidisciplinary UI/UX, product, and graphic designer from Patras, Greece, with 22+ years of experience helping teams validate, prototype, design, and launch digital products and brand identities. I specialize in turning user needs into intuitive, engaging, and visually refined experiences—combining user research, wireframing, prototyping, interface design, branding, and storytelling to improve usability and support stronger business outcomes.
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Language
English
Advanced
Greek, Modern
Fluent
Work Experience
Product, UI/UX, and Graphic Designer at NSI4
January 1, 2024 - January 1, 2026Designed 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, 2025Handled 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, 2025Worked 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, 2025Led 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, 2025Performed 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, 2023Designed 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, 2025Handled 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, 2025Worked 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, 2025Worked as a freelance UI/UX Designer and Graphic Designer on various large projects.
Web Designer at Freelancer
December 31, 2017 - July 24, 2025Worked 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, 2022Led 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 at Multiple agencies (e.g., e-via SA, Redsharp, Webavenue, WebGreece, Centiva, Itrust)
January 1, 2008 - January 1, 2017Collaborated on a range of large-scale digital projects as a freelance UI/UX and graphic designer, contributing to interface design, branding assets, and visual communication systems.
Freelance UI/UX and Graphic Designer (collaborations) at Multiple agencies (e-via SA, Redsharp, Webavenue, WebGreece, Centiva, Itrust, etc.)
January 1, 2008 - January 1, 2017Collaborated 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, 2025Worked 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, 2025Worked 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, 2025Maintained 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, 2025Worked 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, 2025Collaborated 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, 2025Worked as a Senior UI/UX Designer.
Freelance Senior UI/UX and Graphic Designer at Protia SA
January 1, 2005 - January 1, 2007Delivered 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, 2025Researched 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, 2025Conducted 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, 2005Worked 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/Collaborations) at Performance Information Systems Laboratory (HPCLab), University of Patras
January 1, 2001 - January 1, 2003Contributed to large-scale information systems projects for public sector clients, including the Greek Ministry of Culture and the Greek National Tourism Organisation (EOT). Work involved research and support for digital information systems initiatives.
Researcher (Freelance) at Performance Information Systems Laboratory (HPCLab), University of Patras
January 1, 2001 - January 1, 2003Contributed 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, 1995Technician of Teleinformatics at National Institute of Aigio
January 1, 1998 - December 31, 2000High School Diploma at 1rd Professional High School of Patras
January 1, 1992 - December 31, 1995Technician of Teleinformatics at National Institute of Aigio
January 1, 1998 - December 31, 2000Technician of Teleinformatics at National Institute of Aigio
January 1, 1998 - January 1, 2000Internship (research lab program) at High Performance Information Systems Laboratory (HPCLab), University of Patras
January 1, 2000 - January 1, 2001Graduate (high school) at 1st Professional High School of Patras
January 1, 1992 - January 1, 1995Technician of Teleinformatics at National Institute of Aigio
January 1, 1998 - January 1, 2000Internship (education/course work) at High Performance Information Systems Laboratory (HPCLab), University of Patras
January 1, 2000 - January 1, 2001Qualifications
Programmer (Cobol, Qbasic, Basic+, C)
January 1, 1992 - December 31, 1995Technician of Teleinformatics (Nuwell network, Unix systems, C++, Photoshop, Java)
January 1, 1998 - December 31, 2000Internship at High Performance Information Systems Laboratory (HPCLab), University of Patras
January 1, 2000 - December 31, 2001Attending education & courses on web design (HTML, CSS, JS)
January 1, 2000 - December 31, 2004Programmer (Cobol, Qbasic, Basic+, C)
January 1, 1992 - August 26, 2026Industry Experience
Software & Internet, Media & Entertainment, Travel & Hospitality, Retail, Professional Services, Gaming, Financial Services, Computers & Electronics
Skills
Experience Level
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Expert
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
Intermediate
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