Vasilis Konstantinou
Backend Security Engineer at Futurae Technologies AG
Athens, Attica, Greece
Summary
👤
Senior🎓
Top SchoolVasilis Konstantinou is a backend security engineer with 8 years of hands-on experience building and hardening payment and infrastructure systems across fintech and enterprise environments. He combines a Computer Science background and an MSc in Information Systems and Security from AUEB with practical Java backend expertise gained at Payzy/Cosmote Payments and MPASS, focusing on secure APIs, CI/CD hardening, and automated testing. Currently at Futurae Technologies, he brings applied security-first thinking to backend services and authentication flows. His profile is distinguished by practical operational experience—running a university CS lab and serving as a special forces combat medic—which informs a disciplined, risk-aware approach to system reliability. Colleagues know him for pragmatic refactors that improve test coverage and for bridging DevOps and development to reduce security gaps in production.
8 years of coding experience
6 years of employment as a software developer
Master's degree Informational System Implementation and Security, Master's degree Informational System Implementation and Security at Athens University of Economics and Business
Greek, English, German
Stackoverflow
123reputation
9kreached
3answers
2questions
Github Skills (64)
spring-rest10
rsql9
msc-project9
noaa9
weather-data9
api8
spring-boot8
decentralized-identifiers8
weather8
meteorology8
json8
admin8
weather-api7
java7
verifiable-credentials7
Programming languages (6)
Github contributions (5)
billk97/Indoor-Tracking-App
Apr 2020 - Oct 2020
This is an android app that using signal strength from nearby WiFi access points triangulates and find the position of the device
Contributions:11 commits, 2 PRs, 32 pushes in 6 months
positionsignalandroidstrengthandroid-app
billk97/personal-page
Jan 2021 - Feb 2025
This repository hosts the source code of my personal website!
Contributions:64 PRs, 121 pushes, 12 branches in 4 years 1 month
cssjavascripthosts
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