I'm Javier Guzman. I build software that scales.

I started my career deep in hardware — in the world of embedded systems. Along the way, I worked in automotive, telecoms and civil aerospace, where I co-authored a paper on automated avionics testing using formal SPARK Ada contracts.

In 2020 I made the jump to web apps and founded Kindoi, a travel itinerary app I ran for three years. That taught me more about backend architecture, cloud infrastructure, and what it actually takes to ship software than any previous job had. Including marketing, sales and pitching. Because I couldn't get money, I returned to the job market and did a small stop at Dygma Labs before spending two years as DevOps lead at Cipherscale (OpenVPN and through an agency), building their entire AWS/EKS infrastructure from scratch and leading all the baseline infrastructure.

I'm a Kubestronaut until 2027 and I'm a homelab user. I prefer doing over talking and I continue creating projects in my free time, just to have fun and learn new things.

The last project I've built is Little Tribe, a mobile phone social network for families, running on Kubernetes with K3s, Cilium, and ArgoCD. I also run a technical blog and share what I learn as I go.