Networking & Wireless
Design, segmentation and migration across Cisco (Catalyst/Nexus/ISE), Aruba, Meraki, FortiGate, Unifi and pfSense — including L2/L3 factory networks and Wi-Fi surveys.
- Cisco ISE
- Meraki
- Unifi
- FortiGate
Freelance IT Consultant · West-Vlaanderen
Complex IT, made clear, secure and future-proof.
JIT-C is Jitser Sevenant — part auditor, part problem-solver, 100% curious. I design, secure and actually document networks, infrastructure and Microsoft 365 for organisations that can't afford guesswork.
ISO 27001NIS2CyFunCIS v8Cisco CCNA10+ yrs
What I do
End-to-end across the stack — from the cabinet to the cloud, with security as the through-line.
Security & Compliance
Audits and frameworks against ISO 27001, NIS2, CyFun and CIS v8, plus XDR/VDR, secure DNS and endpoint protection — turning risk into a prioritised, actionable roadmap.
- ISO 27001
- NIS2
- CyFun
- CIS v8
Identity & Access (IAM/PAM)
IAM and privileged-access frameworks with Entra ID, Devolutions and OneIdentity — the right people with the right access, and a trail you can prove.
- Entra ID
- IAM
- PAM
- PIM
Cloud & Microsoft 365
Azure and Microsoft 365 infrastructure: Entra ID, Exchange, Teams, SharePoint, Intune and Defender — secured, governed and integrated with your on-prem world.
- Azure
- M365
- Intune
- Defender
Infrastructure & Virtualization
Server, storage and backup design on HPe/Dell, VMware, Hyper-V, Proxmox, Veeam and Rubrik — resilient platforms with documentation that survives the handover.
- VMware
- Proxmox
- Veeam
- HCI
OT / IT Convergence
Bridging factory and office worlds — SCADA, PLC, OPC, MQTT and Profinet — with segmentation and security that keeps production running safely.
- SCADA
- OT/IT
- Profinet
- MQTT
The IT Revisor method
I don't stop at the audit report.
I research, connect the dots, and turn findings into clear, actionable insight — then make sure it actually lands.
- 01
Discovery
Understand the business, the IT landscape and the real pain points.
- 02
Deep Dive
Audit the areas that matter — security, infrastructure, compliance.
- 03
Connect the Dots
Research and link findings into a holistic picture, not isolated tickets.
- 04
Actionable Plan
Present findings and a prioritised roadmap you can actually execute.
- 05
Follow-Up
Check implementation and adjust — continuous improvement, not a binder on a shelf.
Selected work
Recent freelance missions across industry, manufacturing and care.
Sumitomo Bakelite Europe
Freelance Infra Manager
Temporary takeover of IT/OT infrastructure and a 100-page audit with risk assessment (ISO 27001, NIS2, CyFun, CIS v8, IEC). Designed baseline IAM, infrastructure and security frameworks.
- Audit
- IT/OT
- NIS2
BekaertDeslee
Freelance Infra Manager
Global infrastructure redesign: Cisco→Meraki migration, Cisco ISE & NAC, IAM framework, secure DNS/XDR/VDR, HCI rollout and new IT environments for Australia & India. Trained 15 first-liners worldwide.
- Cisco ISE
- IAM
- Global rollout
Wit-Gele Kruis WVL
Freelance IT Consultant
Stand-in for a missing IT role, with process-flow charting and analysis as an external observer to keep operations running and surface improvements.
- Continuity
- Process
- Healthcare
Why work with a freelancer like me
Flexibility
I adapt to your pace and needs — no fixed-contract overhead, ready when you are.
Tailored expertise
A knowledge ambassador who keeps learning, across government, education, industry and care.
Efficiency
One clear invoice per period. No HR administration, no complex payroll.
Commitment
I work as if I am part of your team — same drive, ownership and responsibility.
Notebook
Latest from the notebook
Could open-source IAM replace Active Directory and Entra ID?
Where midPoint plus Authentik can replace the Microsoft identity stack in a hybrid Windows/Linux shop — and where it can't. A thought experiment, not a build.
- Identity
- Architecture
- Security
When your gateway hijacks DNS
An internal site that wouldn't load, a resolver that was never asked, and the dead-IP query that proved a 'helpful' gateway was answering DNS behind my back.
- DNS
- Security
- Networking
- Homelab
Why we're keeping venv, for now
I measured uv against our pin-everything dependency policy. It fits — and we're still staying on stdlib venv. The why is more interesting than the verdict.
- Python
- Tooling
- AI Agents
Let's talk about your IT.
Audit, project or a missing pair of hands — tell me what's on your plate and I'll tell you, honestly, how I can help. No obligation.