Georgios Papakostas
Larisa
Summary
Senior Java Software Engineer with 10+ years of experience delivering enterprise platforms for banking and European institutional clients. Strong in Java SE/EE, Spring Boot/MVC, REST APIs, microservices, and database-driven systems (PostgreSQL, SQL Server, DB2). Comfortable across the
SDLC from design and development to CI/CD and containerized deployments (Jenkins, Docker,Kubernetes).
Security-minded engineer with OSCP certification and hands-on penetration-testing labs.
Overview
11
11
years of professional experience
1
1
Certification
Work History
Senior Software Engineer
NetCompany– Intrasoft S.A.
08.2023 - 03.2025
- JAVA Developer for European Institution’s projects. Stack: Spring MVC, Spring Boot. PostGresSql, Microservices, Jenkins, Junits 5, Kubernetes, Docker Desktop
Java Web Developer
Ground Zero Labs Company
07.2017 - 08.2023
- JAVA Developer for Loan Sytem of Eurobank Bank of Greece. We deal with Intellij, Java SE/EE (6,7,8 and 9), Handlebars, SQL Server Database and Maven based programs and JBOSS Server. Purpose of working:
- Maintain and developing an ERP writtenin Java EE (and other)that is used for the Loan Origination Department of the Bank.
Java Web Developer
EXUS Company
02.2015 - 06.2017
- Worked as JAVA Developer for the project of Piraeus Bank of Greece. We deal with Eclipse, Rad9, Java (6, 7, and 8), Jasper Reports, Spring Framework, ZK Studio, DB2 Database and Maven based programs. Websphere 8.5, WebSphere Liberty 8.5. Purpose of working:
- Maintain and developing an ERP written in Java, jsp (and other) that is used for the Accounting Department of the Bank
- Creation of new programs using Spring Framework and Java EE 7,8 and ZK Studio or Primefaces
- Creation of a new program that is responsible of the insertion of the expenses of the employees of the bank and the send to the logistics center.
PHP/Web Developer
Seventron Limited
07.2014 - 08.2014
- Creation of new website for the activities of football academies
- Creation of new website for banning spamming emails
- Both written with PHP, Yii Framework, HTML5/CSS3, MySql, phpMyAdmin, Hosted and tested onUbuntu Server
Web Designer/Developer
Disrupt Startup ScaleUP
09.2013 - 11.2013
- Worked as web designer for the event Disrupt Startup ScaleUP. Organized by Industry Disruptors -Game Changers (ID- GC) on November 23-24 2013 at Megaron International Conference Centre in the context of the Global Entrepreneurship Week Greece 2013. I worked from 23 September to 24 November 2013.
Education
MSc - Secure Computing Systems (and Networks)
University of Hertfordshire
01-2014
BSc - Computer Science
University of Hertfordshire
01-2012
Skills
Expertise
- JAVA (SE/EE) 6, 7, 8, JSP and Web Services(SOAP, wsdl, Rest, xml) in JAVA
- Systems DB2 Database, Data Studio, Squirrel, MySQL Database, MySQL Workbench 6, Hibernate,JPA
- HTML5, CSS3 Administrating and setup Apache Server, Apache Tomcat Server, MySql Server, Webshere Server, Webshere Liberty, JBoss Server Server, FTP Server, Glassfish Server using Linux or Windows
- Spring Framework (MVC, Spring Boot, Security)
- ZK Studio(JAVA)
- HTML5, CSS3,JSF(Primefaces, RichFaces), jsp
- Ubuntu Linux Server
- JavaScript, jquery, ajax jquery
- WordPress
- Xml (SOAP, JPA connection, Web Services,etc)
- Usage of Git ( GitBlit Server),Tortoise(SVN,CVS)
- Jasper Reports, iReport 6,Handlebars Mustache
- PHP, Yii Framework
- Knowledge
- Offensive Security Certified Professional (OSCP) Pen Testing Labs - OSCP certified
- Web and Networks Penetration Testing, Vulnerability Assessment, Exploitation, Stack Overflow Exploitation
- Hack The Box Penetration Testing labs, Vulnerable By Design machines
- Linux and Windows (terminal, cmd, bash script)
- Windows Server 2012,Linux Server
- AutoIt, Python, Ruby, bash scripts on Linux and Windows OS
- C,C,C#
- Netlogo, Matlab
- Joomla Administrator-Diploma
- Drupal
- ECDL/Core Degree
Certification
Offensive Security Certified Professional (OSCP)
Diploma Joomla Administrator
ECDL Core
Lower English Degree
ANNEXES
- 1) Bachelor Degree in Computer Science
- 2) Master in Secure Computing Systems
- 3) Offensive Security Certified Professional (OSCP)
- 4) Lower Degree in English Language
- 5) Joomla Administrator-Diploma
- 6) ECDL/Core
- 7) Letters of recommendation Available
Languages
English
Professional Working
Timeline
Senior Software Engineer
NetCompany– Intrasoft S.A.
08.2023 - 03.2025
Java Web Developer
Ground Zero Labs Company
07.2017 - 08.2023
Java Web Developer
EXUS Company
02.2015 - 06.2017
PHP/Web Developer
Seventron Limited
07.2014 - 08.2014
Web Designer/Developer
Disrupt Startup ScaleUP
09.2013 - 11.2013
BSc - Computer Science
University of Hertfordshire
MSc - Secure Computing Systems (and Networks)
University of Hertfordshire