Vassilios Samaras

• Provided DBA operations and 24/7 production-shift support for internal and customer-facing Microsoft SQL Server and PostgreSQL environments. • Installed, configured and maintained approximately 50 SQL Server and 20 PostgreSQL instances across Windows Server, Ubuntu and Red Hat; supported 10 SQL Server instances in HA/DR scenarios. • Worked with SQL Server HA/DR technologies including Always On Availability Groups, Failover Cluster Instances, Windows Server Failover Clustering, Log Shipping and Transaction

HACCP Advice (Triatron rename) provides food hygiene, health safety advice and training courses according to EU food standards ISO 22000, ISO 9001. With Food Hygiene Rating Scheme - experts can help companies to achieve a top score on the door every time. • Maintained continuous uptime across SQL Server and PostgreSQL environments by owning database design, patching, and disaster-recovery preparation, resulting in reliable operations for client-facing systems. • Extended infrastructure capability into No

SIMA ATEME provides technical consultancy for specialized services in both the private and public sectors. Combined with the opportunities provided by the absorption of EU funds for the execution of large infrastructure projects and development in our country through the Community Support Frameworks. One of the main projects is the developing of Land property database for the Greek Government. • Delivered a national land-property database for the Greek Government by designing and maintaining the core SQL S

EUROSPACE a computer Training school for kids.

National Bank (www.NBG.gr) became the first bank in the Modern Greek state. National Bank leads the largest and strongest financial group in Greece, with a strong presence in Southeast Europe and Eastern Mediterranean. • Built a client-facing archive database solution for Greece's largest bank by developing and deploying a custom system for large-volume data handling, resulting in improved data quality and processing efficiency.

AQS Ltd. (www.AQS.gr) provides consultancy services on quality and productivity improvement to the organizations that entrust them with their projects. AQS holds a position among the most dynamic consultancy firms in the field of Business Strategies and is a full member of the Hellenic Association of Management Consulting Firms (SESMA) and the Hellenic Society of Management Consultants (ELESMA). The Training and Consultancy Services AQS offers are certified by TUV Austria, according to the ISO 9001:2008 sta