Our People

Our People

Our people are our most valuable strategic assets. Over the past 50 years, our knowledgeable, highly-trained and experienced workforce has made Uni Systems a leading and reliable systems integrator.

Uni Systems personnel operates in an environment of innovation and creativity; where the constant flow of ideas is encouraged and thinking out-of -the-box is appreciated. Our top human resource priority is the continual education and investment in our people. In return, we expect passion and commitment to our company.


The education includes: technology certifications,vendor briefings, participation in major global technology or business events, web-based training,internal seminars, internal know-how transfer and on-the job training, external seminars and educational programs, mini custom MBA’s, subsidy of own training. The educational emphasis is on technology, business expertise and, soft-skills development.

Uni Systems’ personnel accepts diversity, defends innovation, promotes creativity, supports the free sharing of ideas and the constant flow of information via open communication, and at the same time values directness and compliance with the Company’s core principles.



With over 500 employees who contribute their own ideas effectively, take a share of the responsibility, are assertive, accept and learn from constructive criticism and giving positive, constructive feedback to others, our team has a unique goal: to make the big difference in ICT market at CEE region. The majority of our people are technology engineers & consultants, working on the fast-paced technological industry:

Our Company recognises that IT is a sector with frequent technological and business changes and ensures that its workforce receives systematic updates and training on these matters. To that end, attracts suitable candidates by taking part in career days, and selects employees by using merit-based procedures and modern staff recruitment systems. As regards to training, it consists an integral part of Uni Systems philosophy and is reflected in its dealings with clients and partners.


Board of Directors

Ioannis Loumakis

Chairman of the BoD & Managing Director

Ioannis Loumakis is an Electrical Engineer from the University of Thessaloniki, with M.S. in Computer Science from Courant Institute, New York University. Since 1985 is working in the area of systems integration in various positions in Greece and abroad: New York University (USA), CITEC spa (ITALY), INTRASOFT, ANDIP, APEX, DECISION SYSTEMS INTEGRATION, Info-Quest, Uni Systems.
Since 2008 he holds the position of Uni Systems Managing Director.

Apostolos Georgantzis

Vice Chairman of the BoD

Apostolos Georgantzis holds the Managing Director position in ACS SA since 2003, while at the end of  2015 he was also appointed as Managing Director of Quest Holdings SA. He holds a Bachelor (BEng) and  a Master’s (MSc) Degree in Mechanical Engineering from Imperial College of Science Technology and Medicine (UK). He has experience as an executive, specialist and entrepreneur/businessman in various positions in the Construction, Investments and Information Technology sectors.

Theodoros Fessas

BoD Member

Theodore Fessas is the founder and major shareholder of Quest Holdings and President of SEV - Hellenic Federation of Enterprises.
Quest Holdings, established in 1981 (as Info-Quest), is listed in Athens Stock Exchange since 1998 and owns leading Greek companies in the sectors of Information Technology (Info-Quest Technologies, iSquare, iStorm, Uni Systems), e-commerce (www.you.gr), Payment transactions (Cardlink), Parcel delivery (ACS courier services) and Renewable Energy operators (Quest Energy, Quest Solar).

Efi Koutsoureli

BoD Member

Efi Koutsoureli, Director for Communications and Corporate Affairs of Quest Group, is a graduate of the American University Deree College with main studies in Business Administration and Economics and post-graduate qualification in Marketing.

Markos Bitsakos

BoD Member

Markos Bitsakos, born in 1959, studied economics at the University of Piraeus, graduated from the one-year MBA program run by the Hellenic Management Association, and graduated top of the class from the FIPP one-year Magazine Management Certificate course. He has experience in numerous business sectors (services, trade, industry, mass media) and, in his career, has held the post of Financial Manager, Administration Manager, CFO and General Manager.

Organization Chart

UniSystems Headquarters

19-23, Al.Pantou str.
176 71 Athens, Greece
+30 211 999 7000
+30 211 999 7100



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