Meet Our Team

Our experienced full-service account teams have your back every day in your day-to-day.

Stefanos Kakaranzas


Stefanos provides customer relationship, operational management and business development for all areas of the business. It also manages the team that with its technology supports major world tournaments. Having worked in ticket issuance since 2001, he has many important milestones in his career, such as being the Ticket Manager for the Athens Olympic & Paralympic Games in 2004. He also founded Tickethour, a company acquired by Ticketmaster in 2016.

Dimitris Petropoulos


Dimitris is responsible for the development of Ticketmaster Hellas products and technology in Greece, as well as in international markets and the tournament industry. He has worked with many leading international sports clubs and organizations, including:
of the Belgian Proleague
the 1st European Games Baku 2015
The Handball World Cup
AC Millan vs Juventus and FC Barcelona – Al Ahli.

Efi Karkani

Business Development Director

Efi’s primary mission is to spearhead our expansion in the dynamic Greek market, identifying new prospects and opportunities across all industries. With a career spanning over 16 years in the field of electronic ticketing, Efi has gained valuable experience, having supported this industry both as an organizer and a ticketing manager. She possesses the ability to thoroughly understand the needs of our partners and supports leading teams in providing ideal solutions to any requirement.

In her statement, she emphasizes:

“As a leading company in the global ticketing industry, we deeply understand the importance of providing an exceptional experience to fans of events of all kinds. This commitment is one that we strive to continually evolve. Collaborating closely with organizers, we leverage our 18+ years of industry expertise to develop new technologies and provide even more upgraded services. Our ultimate goal is to design and ensure an unrivaled experience on this journey to entertainment, from ticket purchase to venue entry.”

Stratos Keramidas

Engineering Director

Stratos has more than 17 years of experience as a software engineer. He has worked on a wide range of applications such as image analysis, insurance, ticketing systems and e-commerce.

Since 2016, he has joined the Ticketmaster family and took part in demanding projects in 15 countries.

In his spare time he enjoys a good movie, likes to travel and plays tennis.

Gavrilas Rose

Software Engineer
Triantafyllos is a lover of technology with over 12 years of experience in large-scale demanding projects. Its role is to oversee the software development team in developing and maintaining software applications and cloud infrastructure according to business needs. It also establishes policies and procedures that produce high quality software products and services. Creates operational strategies and specific goals for the software team. Finally, develop budgets, policies and procedures to support operational infrastructure.

Marianna Filippopoulou

Financial controller
Marianna joined the Ticketmaster Hellas team in 2017 as a Financial Controller.

Elena Thomas

Project Manager
Elena has 9 years of experience as a project manager in the fields of Technology, Digital Consulting and Retail, with passion and methodology in the fields of Program Management, Lean Six Sigma and Agile Methodologies. She joined the company in 2018, where she was given the opportunity to work on some really exciting international tournament projects and to lead transformation projects through strategy, technology, process engineering and change management. She loves festivals, a good theater and an exciting game!

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