John Karygiannis ☁️

Experience

• 

  Smart Destination and Convention

  Feb 2003 - Jan 2004

  Office Employee

  I was employed for almost a year during my studies. My position required casual computer maintenance, booking tickets, making hotel reservations and delivering required documents to the agency’s clients. I worked really hard to learn about travels and vacation destinations and I enjoyed having to interact with different people of different language and culture.Duties included:• Computer and system maintenance• Ticket booking• Hotel reservations• Daily contact with international recipients (hotels, travel agencies and airports) Show less

• 

  Hellenic Electrical Company

  Jun 2004 - Feb 2007

  Technical Assistant

  I was employed under 3-month contracts each year during my studies. I was responsible for indexing the daily missions assigned to technicians in the computer using a sophisticated database of Microsoft Access.

• 

  Kotsovolos

  May 2005 - Nov 2005

  Sales

  Kotsovolos (Κωτσόβολος) is one of the leading electrical retailers in Greece. Having started as a simple store in Athens in 1950, the chain today operates 103 stores all over Greece, employing over 2000 people. The company has also developed a rapidly growing franchise network, totaling at present 30 stores.Kotsovolos specializes in the sale of high technology electronic products, computers, home appliances, photographic equipment, telecommunication products, as well as in the provision of after sales support and maintenance services. Kotsovolos has also introduced and is investing in business to business services.I was briefly positioned in Sales Department of the Branch located near Athens International Airport. I was certified at selling Electronics as well as Computers, Cellphones, Gadgets and Video Game Consoles.Duties included:• Customer satisfaction• Inventory• Team training• New inventory and sale methods implementation Show less

• 

  Open24

  Feb 2007 - Sept 2010

  Service Desk Representative/Engineer and I.T. Infrastructure Specialist

  Open24 is a subsidiary of Eurobank EFG providing banking services and customer support 24 hours a day. I entered the organisation as a service desk representative in the I.T. department. During my time at Open24, on my own initiative I helped evolve my department by undertaking projects and guiding my team through procedures and problem solutions. Through my dedication, I soon was promoted to Infrastructure specialist where I was responsible for maintaining computer hardware and computer network infrastructure. Show less

• 

  Hosting Juice

  Sept 2010 - Dec 2012

  Representative/Support Engineer

  HostingJuice is a company that entered the internet services department in a dynamic way. Some of the provided services are shared web hosting, Virtual Private and Dedicated Servers, web page development and voip systems design and integration. My responsibilities are focused mainly on customer support, technical assistance and hardware maintenance. My priorities are customer satisfaction and good hardware maintenance.

• 

  E-shop.gr

  Feb 2013 - Aug 2014

  Sales

  e-shop.gr is a innovative startup sales company founded in 1998. After almost fifteen years of rapid development the first internet store in Greece continues it's upwards trend with more than 80.000 unique visitors per day. The company features complete computer systems with the Innovator logo along with everything else that a consumer may need ranging from hardware, software, peripherals, audio and video, mobile phones, books, toys, tools, heating and many other appliances for every need. While working at e-shop.gr, i was in charge of sales and 1st tier technical support. Show less

• 

  ERGO Greece

  Aug 2014 - Jun 2018

  System Administrator

  One of the largest reinsurance companies in the world, Munich Re is the majority shareholder of the ERGO group with a rate of 99.6 %. Addressing the major challenges of the future is the subject of Munich Re for almost 130 years . As a reinsurance company, acts at the international level by applying a range of disciplines in order to make all major and serious risks insurable.My key responsibilities are infrastructure maintenance, user support and system integration.

• 

  Inventio Consulting

  Jul 2018 - Nov 2018

  SharePoint Designer and Consultant

  I designed and created a user-friendly portal with lots of information to be exchanged between users and groups and many utilities to be used such as file libraries and project calendars. I designed a Subsite Template that the Administrator can use anytime to create multiple subsites according to individual projects undertaken which incorporates various share tools such as Project Contacts, Project Calendar and Project Files. I improved overall platform security by designing from scratch user groups and permissions and by tweaking Office 365 Administrator Settings to disallow sharing of explicit file types. Show less

• 

  SYNTAX IT Inc.

  Nov 2018 - Jun 2021

  Information Security Consultant

  Expert:- Symantec Encryption Management- Symantec Endpoint Protection- Symantec Messaging Gateway- Symantec Security Cloud- Veritas Netbackup- Veritas Enterprise Vault- Veritas Backup SaaS for Cloud- Fortinet firewalls- Fortinet Access Points- FortiOS Administration

• 

  Info Quest Technologies

  Jun 2021 - Dec 2023

  Cloud Architect

  Securing both on-prem and Cloud Infrastructures against the ever changing landscape of digital threats, is an exciting and challenging business.Certified:Microsoft Security Operations Analyst AssociateMicrosoft Identity and Access Administrator AssociateMicrosoft Azure Solutions ArchitectMicrosoft Azure Administrator AssociateMicrosoft 365 Certified Security Administrator Associate

• 

  AXA Group Operations

  Jul 2021 - Nov 2023

  Information Security Project Manager / Specialist

  With CIS benchmarks and MTSB 2.0 Controls at hand, my target was to improve the country's local office overall security posture, which was achieved way before any deadline. Tools used included PingCastle (Active Directory VA), DeTack (Password Robustness), Tenable (Network and Device VA, Group Policy Assessment), RDP MFA, Cybereason (EDR), AIP (At-Rest Encryption), Network Hardening, Server Hardening.The Log4j vulnerability sure made things more interesting in the process :-)

• 

  Netcompany-Intrasoft

  Jan 2024 - now

  Senior Cyber Security Engineer