I’m a traditional systems administrator and engineer with over 15 years of experience designing, building, and maintaining robust Unix and Linux infrastructures. My work blends classic Unix craftsmanship with modern DevOps practices - delivering secure, reliable, and maintainable systems for organisations that value stability, transparency, and technical excellence.

What I do

• Systems Administration & Engineering
Deep expertise in Linux (RHEL, Debian, Arch), OpenBSD, FreeBSD, and OmniOS/Solaris, with hands-on experience in Proxmox, VMware ESXi, and SPARC systems.

Skilled in server hardening, virtualization, ZFS storage, and enterprise networking.
• Programming & Automation
Practical software engineering with C, Perl, Shell (Bash/Korn/awk), and Python, focused on automating deployment, monitoring, and performance tuning.

I write clean, portable code rooted in the Unix philosophy — small, auditable, and efficient.
• Solutions Architecture
Design of secure infrastructures and service stacks integrating Docker, Kubernetes, Ansible, and Keycloak SSO.

Past projects include private cloud deployments, VPN infrastructures, and full-stack F/OSS environments for small enterprises and non-profits.
• Database & Middleware Administration
Experienced with PostgreSQL, Oracle Database, PL/SQL, and JBoss/WildFly, combining classic DBA rigor with a modern DevOps mindset.

Recent Work

• Built a secure virtualization platform on OpenBSD and Oracle SPARC using LDOM and onion networking for a private intelligence client.
• Deployed a VMware vSphere / OpenShift cluster supporting European operations at a data centre in Amsterdam.
• Engineered a PostgreSQL-based digital currency backend with ACID compliance and replication for financial applications.
• As Technical Director at GreenCore Tech, designed educational and infrastructure templates promoting F/OSS adoption.

Approach

I prioritise clarity, maintainability, and security. Every system I build is documented, reproducible, and designed to last - using open standards and avoiding vendor lock-in.

Available for consulting, freelance systems engineering, and traditional Unix/Linux administration.