About Me
Welcome! I’m someone who thrives on curiosity and continuous learning — a quality that’s shaped both my technical and coaching journeys. From time to time, I share thoughts and insights here in either English or Dutch.
Areas of Expertise
Technical & Systems Administration
I bring decades of hands-on experience in IT infrastructure, system administration, and network solutions, particularly in Linux/Unix environments. Since 1989, I’ve been immersed in the world of computing — scripting, configuring, optimizing, and troubleshooting at nearly every level of the stack.
Key competencies include:
- Linux/Unix System Administration: Redhat, Fedora, Debian, Ubuntu
- Virtualization & Containerization: Proxmox, OpenVZ, VMWARE, Docker (Portainer)
- DNS & Web Services: Bind9, PowerDNS, Knot DNS, NGINX reverse proxy, Cloudflare
- Monitoring & Automation: Nagios (custom plugin development), shell scripting, Bash
- AI/LLM Server Management: Administration of CPU and GPU-based inference servers
- Networking & Routing: BGP with BIRD2, Routinator RPKI, DNSdist, IP planning
- Web & SEO: WordPress (including custom plugin development), PHP, Python, SEO
Coaching & Instruction
My passion for personal growth and development extends to others. I’m a certified:
- PADI Open Water Scuba Instructor
- Emergency First Response Instructor (EHBO / Streetmedic)
- Personal Coach (with experience in both physical and mental resilience)
Freelance Experience
Between 1994 and now, I freelanced and operated various businesses providing tailored tech and solutions to businesses:
- Maduro Internet Solutions (2008–2016): Online Life coaching, remote Linux system administration, and remote server performance monitoring.
- Freelance Project (2006–2016): Custom hosting solutions for a diverse clientele, including legal professionals and SMBs.
- Freelance Project (2004): Designed and managed the technical infrastructure of Rainbownet a former small dialup ISP in Aruba.
- Maduro Solutions (2001–2007): Early venture into IT services and consulting.
- Freelance (1994–present): IT services and consulting.
Professional Background
- Stichting Lucifer (2013–present): Board Member
- Stichting Humanity4all (2012–present): Board Member
- COPE IPS BV / Dimensional Insight Netherlands BV (2009–2010): Linux sysadmin, managing 100+ virtual machines
- BBeyond BV (2008): Business Support
- XS4ALL Internet BV (2001–2008): 2nd line support engineer, trainer/coach, and back-office specialist
Volunteer Work
I support and actively volunteer for several causes I deeply care about. Learn more here.
Get in Touch
Whether you’re interested in collaboration, have a technical challenge, or just want to connect — feel free to contact me.