Network engineering
Designing and deploying segmented, secure network architectures — and being able to explain what every packet is doing and why.
Cisco IOS · VLAN · Routing · IPv4/IPv6 · IPsec · DNS/DHCP
02 / Capabilities
What I actually do
Four areas, each backed by the tools and protocols behind it rather than a self-assessed percentage bar.
Security
Building infrastructure that assumes it will be attacked: segmentation, least privilege, and identity as the perimeter.
Firewalling · VPN · Network segmentation · Access control · Hardening
Home automation
Complex automations and dashboards in Home Assistant that stay understandable to the people who live with them.
Home Assistant · Zigbee · MQTT · Z-Wave · Node-RED
Development
Web applications and internal tooling, plus the Python that glues sensors, models and automations together.
Next.js · TypeScript · Python · React
03 / Background
Background
Studying network and security engineering while running two businesses that put it into practice — after eight months inside a Google data centre.
Experience
2024 — now
Co-owner
pyxels
Secure high-speed networks with 10GbE and Wi-Fi 7, and complete smart-home installations covering lighting, climate control and security.
2023 — now
ICT services, freelance
Riemersma ICT
Helping private clients with computer trouble at home, and businesses with solutions shaped around the way they work.
2021 — 2022
Data Center Technician, internship
Google — Eemshaven
Eight months inside one of Europe’s largest data centres, troubleshooting network faults and server hardware at production scale.
2020 — 2023
Student IT
Studentaanhuis
On-site software and network troubleshooting for private clients in and around Groningen.
2022 — 2023
Telesales Agent
Conduent
Remote sales and customer service.
Education
2022 — now
BSc ICT — Network & Security Engineering
Hanze University of Applied Sciences, Groningen
Specialising in secure infrastructure, network architecture and applied research projects.
2019 — 2022
Network and System Administration
Noorderpoort
Vocational training in network and system administration, including the multi-site Teradruk BV infrastructure project.
Certifications
Cisco CCNA first, then the rest in full.
Cisco · Nov 2023
CCNA: Enterprise Networking, Security, and Automation
Cisco · Oct 2023
CCNA: Switching, Routing, and Wireless Essentials
- Introduction to Internet of ThingsCisco · Feb 2026
- Routing IPv4 and IPv6Pluralsight · Mar 2022
- Azure Active Directory: BasicsLinkedIn · Oct 2023
- Learning Network TroubleshootingLinkedIn · Oct 2023
- Cisco CCNA (200-301) Cert Prep: Network Fundamentals and AccessLinkedIn · Oct 2023
- Leveraging ChatGPT for Smarter CybersecurityLinkedIn · Oct 2023
- Crash Course on PythonCoursera · Mar 2022
- Effective communication in ICTHanze · Jan 2023
- Introduction to Parametric Feature-Based CADOnshape by PTC · Nov 2025
04 / Contact
Got a network or a house that needs thinking about?
Available for freelance work and smart-home projects across Friesland and the north of the Netherlands.
peter@riemersmaict.nl