Alexander Leidinger
Security Technician at Fujitsu Luxembourg
Saarland, Germany
Summary
👤
Senior🎓
Top SchoolAlexander Leidinger is a seasoned IT professional with 24 years of hands-on experience in Unix/Linux systems, cloud environments and IT security, currently serving as a Security Technician at Fujitsu Luxembourg. His career spans large financial and enterprise environments—Nordea and multiple consultancy roles—where he progressed from system administration to senior Unix engineering and security-focused operations. Comfortable across private, public and hybrid clouds (not limited to VMware), he blends low-level Unix expertise with practical security controls and operational hardening. Based in Saarland, Germany, he brings a steady track record of reliable infrastructure delivery and incident-resilient design, often applying lessons learned from long-term, mission-critical deployments. An engineer by training (Diplom-Ingenieur, Universität des Saarlandes), he pairs deep technical roots with a pragmatic, security-first mindset that favors durable solutions over flashy experiments.
24 years of coding experience
17 years of employment as a software developer
Diplom-Ingenieur, Diplom-Ingenieur at Universität des Saarlandes
German, English, French
Github Skills (200)
dashboard10
postgresql10
statsd10
vulnerability-scanners10
spyware10
bots10
referrer-spam10
grafana10
ssh-keys10
cffi10
openbsd10
malware10
pypy10
influxdb10
monitoring10
Programming languages (16)
Github contributions (5)
netchild/nginx-ultimate-bad-bot-blocker
Feb 2020 - Mar 2020
Nginx Block Bad Bots, Spam Referrer Blocker, Vulnerability Scanners, User-Agents, Malware, Adware, Ransomware, Malicious Sites, with anti-DDOS, Wordpress Theme Detector Blocking and Fail2Ban Jail for Repeat Offenders
Contributions:33 pushes, 16 branches in 26 days
nginxreferrerantiransomwarevulnerability-scanners
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