Hello, I’m Kyriakos

Senior Infrastructure Engineer with over twenty-two years of experience in infrastructure, security, and network integration. Based in Leiden, Netherlands. Building things on the internet since 1999 , networks since 2004 .

Currently building open-source products (CubeOS , MeshSat ), operating multi-site infrastructure using AI-augmented operations, and learning Kubernetes and BGP hands-on through a homelab that spans multiple countries.

The Journey

My career path started where many of us from the early 2000s Greek tech scene began: internet cafés, helpdesk, and fixing things that weren’t supposed to break. From there, I progressed through technical support, systems administration (both Microsoft and Unix/Linux), network engineering, and eventually specialized roles in critical financial infrastructure.

During the last two decades, I’ve held positions ranging from maintaining navigation systems for 800 taxis, to implementing COMSEC for classified military communications, to engineering the SWIFT banking platform that processes transactions for companies like Facebook, Uber, and Spotify. Security was a primary duty in most of those roles — it tends to follow you once you’ve had a clearance.

My career has mostly been within structured, conservative organizations. When things got too comfortable, I moved on — always looking for the place where I’d learn the most.

Notable Roles

  • Adyen — SWIFT Engineer on the banking infrastructure that processes payments for companies like Facebook, Uber, and Spotify. Compliance, HA, security — working closely with treasury and infrastructure teams
  • Doctors Without Borders (MSF) — Senior IT Infrastructure Lead supporting humanitarian operations in conflict zones and disaster areas worldwide
  • SWIFT — Network Engineer for the backbone of global financial messaging, processing trillions in daily transactions
  • European Space Agency (ESTEC) — Systems Administrator for mission-critical applications, adhering to ESACERT (ESA’s Computer Emergency Response Team) security guidelines
  • 476th Electronic Warfare Battalion — COMSEC/INFOSEC implementation for classified communications (Hellenic Army, compulsory service that turned into actual security work)

Current Focus

After twenty years of managing other people’s infrastructure, I’m building my own — and doing it with AI.

I use Claude Code as my primary implementation tool. I make the architecture decisions, run QA, own the product direction, and approve all operational changes. The code is AI-assisted. The vision, the trade-offs, and the accountability are mine.

The result is three products and an operations platform:

CubeOS — An open-source self-hosting platform for Raspberry Pi and ARM64 devices. What Synology DSM is for NAS, but for any hardware. Docker Swarm orchestration, a hardware abstraction layer that makes device location irrelevant across a cluster, and an offline-first design for field deployments. 26+ releases, Apache 2.0, no paywall.

MeshSat — An open-source multi-transport gateway that bridges LoRa mesh networks to Iridium satellite, cellular, APRS, and 6 other transports. Cost-aware routing, AES-256 encryption, and field kits I built and tested with real satellite and mesh hardware. 49 GitHub stars.

Agentic ChatOps — A 3-tier AI operations platform managing 310 infrastructure objects across 6 sites. I started by managing everything manually, then progressively automated myself out of the operations loop. AI handles monitoring, triage, and incident investigation. I approve changes via interactive polls in Matrix. 21/21 agentic design patterns, 98 eval scenarios, 7-layer safety guardrails.

Alongside the products, I run a multi-site homelab as a learning environment — Kubernetes (7-node cluster with Cilium), BGP routing (AS214304 ), and infrastructure-as-code. It’s overkill for a homelab, but it’s where I learn by building, not just studying. The kind of setup where I own the full stack, not just the layers someone else lets me touch.

View my products → · View my projects →

Start Here

If you only look at three things:

  1. Agentic ChatOps — Three AI subsystems managing 310 infrastructure objects. Human always in the loop. Self-improving prompts, 7-layer safety, 98 eval scenarios across 3 test sets.
  2. CubeOS — Open-source self-hosting platform with Docker Swarm orchestration and a hardware abstraction layer. 26+ releases. The product I’m most proud of designing.
  3. System Status — Live infrastructure health. This is the homelab running in production — the learning environment that the agentic platform manages.

Get in Touch