Curriculum Vitae

Senior Linux Engineer – Global Infrastructure — i3D.net

Rotterdam, South Holland, Netherlands · 2026-01 – Present

Platform Engineer — Logius

The Randstad, Netherlands · 2024-04 – 2025-12

Elasticsearch and ECE, boring in the best way. Coaching, codified patterns, change reviews. Good practice over quick fixes.

• Own platform health across multiple Elasticsearch/ELK environments supporting critical national services; drive consistency in operations.
• Codify cluster deployment & operations patterns in Ansible playbooks used by other teams (reproducible + sane by default).
• Agree reliability targets with product teams and review alerts against those targets.
• Prepare environments for Cross-Cluster Replication (CCR) & multi-tenancy to broaden platform reach.
• Serve as technical conscience / design sparring partner across infra initiatives; influence decisions toward long-term reliability.
• Reduced toil & alert fatigue by strengthening automation and observability signals.
• Unblock teammates & sister teams when needed; keep delivery flow smooth.

Sr. Linux Specialist — Ministerie van Binnenlandse Zaken en Koninkrijksrelaties

The Randstad, Netherlands · 2019-04 – 2024-03

Made complex infra predictable and boring; central Elastic Cloud Enterprise, Flask insight tooling, modular Ansible; codified patterns and ran reviews.

• Acting Tech Lead for 6 months: coordinated delivery, represented the team in SAFe ceremonies (ART Syncs, SI syncs, PI Planning), coached engineers; returned to IC to maximise impact as the model became process-heavy, documented recommendations, and handed over cleanly.
• Designed, deployed  & operated a central Elastic Cloud Enterprise platform that now serves 10+ teams of varying scale, streamlining Elasticsearch adoption and giving a single point of control and accountability.
• Built a Flask-based infra insight tool (MongoDB, Pandas, Pydantic, Celery + RabbitMQ) aggregating CMDB (TOPdesk), Ansible facts & Grafana data; used by capacity, procurement & platform teams for usage, storage & ECE reporting.
• Re-architected monolithic Ansible repository into modular Galaxy structure; accelerated reuse and lowered maintenance burden.
• Authored & maintained broad Ansible role library to automate deployments and reduce manual ops.
• Championed infra best practices via reviews & mentoring; raised automation maturity.
• Managed and improved production Elasticsearch environments (stability, uptime, predictability).

Sr. Linux Specialist — Nationaal Cyber Security Centrum (NCSC-NL)

The Hague Area, Netherlands · 2018-03 – 2019-03

Kept infrastructure dependable and future-proof by managing SINA systems and rolling out their next generation.

• Operated and refreshed secure SINA infrastructure (incl. PKI) underpinning NCSC operations; delivered next-gen rollout to replace ageing environment with minimal disruption.
• Managed mixed physical & virtual infrastructure footprint in high-trust environment.

DevOps Engineer — Hoppinger

Rotterdam Area, Netherlands · 2014-10 – 2018-03

Puppet 2.7 to modular Puppet 5 with r10k/Hiera; GitLab CI/CD standards; Docker hosting on OpenStack and bare metal; ZFS-backed foundations; coached CLI fluency.

• Transformed Puppet 2.7 legacy into modular Puppet 5 (r10k/Hiera); enabled multi-dev workflows and cleaner environments.
• Established Git Flow & GitLab CI/CD to standardise change across infra repos; enforced quality gates.
• Developed scalable update strategy tied to both server count & team growth.
• Designed Docker-based hosting platform deployable on OpenStack or bare metal; abstracted infra differences.
• Built ZFS-backed Ubuntu building blocks (KVM, Docker, central backup) to lower hosting TCO.
• Modernised network stack with MikroTik CCR/CRS + VLAN segmentation & CAPsMAN Wi-Fi.

Senior Linux Engineer at Stichting Deltares — Snow B.V.

2009-12 – 2012-01

Helped keep the national flood forecast running, replaced fire-fighting with scheduled maintenance, and designed FreeBSD storage that could scale with the tide.

• Maintained mission-critical forecasting clusters (~120 servers) supporting national water infrastructure
• Redesigned server environments for improved robustness, scalability, and maintainability
• Deployed custom-developed forecasting software (Delft-FEWS) into production environments
• Introduced regular maintenance windows to stabilise long-running services
• Designed and planned rollout of a scalable FreeBSD + ZFS-based storage platform (starting at 20TB raw)

Founder — Loeniks

Capelle aan den IJssel, South Holland, Netherlands · 2009-07 – 2014-06

Kept a shoestring VPS platform humming: XenServer to carve up the metal, Bacula to sleep at night, and enough automation to keep click‑ops at bay. Looked after users, comms, and capacity so side‑projects could just run.

• Virtualisation & backups: XenServer + Bacula, with sensible defaults.
• Provisioning automation and base images to keep instances consistent.
• Community support, PR, and incident handling.

Senior UNIX & Linux Engineer at KPN Mobile — Snow B.V.

2007-12 – 2009-10

Kept the Sun boxes purring, brought Linux into the fold, and modernised Nagios before it was cool again.

• Planned and implemented improvements across a 1500+ server Unix/Linux landscape
• Designed and implemented high-availability(ish) environments using Solaris 10 and Red Hat Enterprise Linux
• Upgraded legacy monitoring systems (Nagios 1 → 3) and integrated with Groundwork
• Managed Solaris Zones on Sun SPARC Enterprise M5000 systems
• Performed periodic tooling upgrades on Sun Fire 6900 to support Ericsson OSS operations
• Provided backline support for all Unix infrastructure across multiple data centres

Senior Unix/Linux Consultant (Selected Engagements) — Snow BV

Geldermalsen · 2007-10 – 2014-09

Short, high‑impact automation and platform work for enterprise clients:

• Mirabeau (Jan 2013 - Jul 2014): Automated ov-chipkaart.nl infrastructure with Puppet
• Deltares (Nov 2012 - Dec 2012): Created CentOS 6 VMware baseline
• ASML (Apr 2012 - Oct 2012): Extended Perl tooling to consume the RHEV API

Senior UNIX & Linux systems administrator — ProServe B.V.

Alblasserdam, South Holland, Netherlands · 2006-04 – 2007-09

Helped scale and modernise a growing ISP by migrating legacy platforms, automating ops, and keeping 600+ servers happy.

• Designed and implemented high-availability server environments for clients with 99.9% SLA commitments
• Led a zero-downtime platform migration from FreeBSD 4.11 to CentOS/RHEL alongside a colleague
• Developed internal tooling (Perl/Bash) to automate updates, manage backups, and visualise backup health
• Acted as third-line support and escalation point for complex technical issues
• Maintained and grew a 600+ server landscape in a rapidly scaling ISP environment
• Served as the department’s go-to engineer for deep-dive problems and technical guidance

Linux systems administrator — Netnation Europe

Rotterdam, South Holland, Netherlands · 2004-04 – 2006-03

Built mail and DNS clusters that stayed up, stayed redundant, and stayed out of the pager.

• Designed, implemented, and documented a geographically redundant mail cluster with spam and virus filtering, serving over 60,000 domains
• Built a redundant DNS cluster to provide authoritative name service for the same domain base
• Standardised automation for backups & quotas
• Managed a rapidly growing fleet of ~900 servers (primarily CentOS, with some FreeBSD and Windows)
• Developed internal tools (Perl/Bash) to automate updates, backups, and quota management
• Maintained spam and virus filtering on all mail frontends
• Acted as third-line support for escalated infrastructure issues

Technological mastermind — Digital Storm Technologies

Greater Vancouver Metropolitan Area · 2003-05 – 2008-03

FreeBSD/Linux hosting admin. Automated backups and updates (Bash/Perl), standardised web/DNS/mail configs, and hardened internet‑facing services.

Support Engineer — Sitecom

Rotterdam, South Holland, Netherlands · 2003-04 – 2004-03

Technical support.

Junior systems administrator — Wirehub! Internet B.V.

Rotterdam, South Holland, Netherlands · 2000-12 – 2002-08

Juggled Apache configs, shell scripts, and the occasional Windows NT box.

• Created and managed virtual hosts on FreeBSD, Linux, and Windows NT web servers
• Maintained and supported client-dedicated servers across multiple platforms
• Developed internal tools and utilities using PHP, Perl, and Bash
• Handled day-to-day web server and database management tasks
• Maintained and updated content on the company’s public-facing website

Skilled frontdesk operative — Wirehub! Internet B.V.

Rotterdam, South Holland, Netherlands · 2000-07 – 2000-12

Wirehub! Internet B.V. was an ISP targeted on the business-to-business market. Wirehub! was sold to Easynet in 2002. My tasks included:

• Support by phone
• Support by email

Homelab Engineer — Home.arpa Enterprises

Barendrecht, South Holland, Netherlands ·

Built a homelab that runs smoother than some prod environments, just to keep my CLI chops sharp and my data safe with ZFS.

• Architect and run an Arch Linux KVM host with OpenBSD guest (DNS for private zones) plus rotating FreeBSD/OpenBSD guests for continuous OS expertise
• Manage container services via Portainer. Services include Nextcloud, Vaultwarden, Ghost CMS, and several static sites
• Operate an OpenBSD and Debian-based Raspberry Pi fleet providing internal services, including LDAP, NTP, privacy-filtered DNS, and CalDAV
• Deploy an off-site OpenBSD guest with WireGuard VPN to expose public projects while isolating the homelab
• Segment networks into Private, Generic Services, IoT, and DMZ VLANs to enforce granular security controls
• Design and maintain off-site, incremental backups with ZFS and Restic, protecting ~35 TB of data
• Serve as a sandbox for patterns I later apply in production; lessons here fed straight into the Logius ELK stack and the ECE platforms at Logius and MinBZK.