Hello, I’m Kyriakos

Senior Infrastructure Engineer with over 20 years of experience in infrastructure, security, and network integration. Based in Leiden, Netherlands. Building things on the internet since 2002, networks since 2004.

Currently dedicating time to self-improvement and building enterprise-grade infrastructure in my homelab, including a multi-site Kubernetes cluster spanning four European countries with BGP anycast routing.

Professional Background

My career spans financial services, humanitarian organizations, and technology companies:

  • Adyen - SWIFT Engineer maintaining critical banking infrastructure for clients like Facebook, Uber, and Spotify
  • Doctors Without Borders (MSF) - Senior IT Infrastructure Lead supporting humanitarian operations worldwide
  • SWIFT - Network Engineer and Technical Support Engineer for global financial messaging systems
  • European Space Agency (ESTEC) - Systems Administrator for mission-critical applications

What I Do

I specialize in:

  • Kubernetes & Cloud Native - Multi-cluster deployments, Cilium CNI, service mesh, GitOps
  • Network Engineering - BGP, IPsec, VPN, Cisco networking, high availability
  • Infrastructure as Code - OpenTofu/Terraform, Atlantis, ArgoCD
  • Security - SWIFT/HSM, mTLS, network policies, secrets management
  • Observability - Prometheus, Grafana, Loki, centralized logging

Certifications

  • Certified Kubernetes Administrator (CKA) - In preparation (expected 2025)
  • Network Automation Engineering Fundamentals - Cisco, November 2025
  • Microsoft Certified Professional - Windows Server, Network Infrastructure
  • TSIA Certified Support Professional

Training & Courses

  • Interconnecting Cisco Network Devices (ICND)
  • SWIFT Alliance Access Advanced
  • SWIFT Managing Alliance Access and Entry

Current Focus

Building Nuclear Lighters - an enterprise-grade homelab spanning Netherlands, Greece, Switzerland, and Norway. This project combines BGP anycast routing with personal ASN, multi-site Kubernetes clusters, and comprehensive GitOps workflows.

View my projects →

Get in Touch