Trusted by government agencies, financial institutions and enterprise organisations. Specialised in Citrix, NetScaler and Azure Virtual Desktop. Based in Rotterdam, working internationally.
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I'm Ufuk Koçak, founder of Horizon IT Consulting. With 22 years of hands-on IT experience, I have delivered projects for government agencies, financial institutions and enterprise organisations across the Netherlands and internationally.
My specialism: Citrix, NetScaler, Azure Virtual Desktop and Microsoft 365. I work independently, move quickly and translate complex infrastructure challenges into workable solutions.
Clear communication, a results-driven approach and the flexibility of a solo consultant with the depth of a senior specialist.
22+ years of specialised experience across enterprise platforms and complex IT environments.
Design, implementation and lifecycle management of Citrix Virtual Apps & Desktops and NetScaler (ADC) environments. Including OTP/MFA, security hardening and firmware upgrades.
Azure Virtual Desktop rollouts, cloud migrations and Nerdio deployments. Certified Azure Administrator and AVD Specialty, with extensive experience in hybrid and cloud-first environments.
Microsoft 365, Teams, SharePoint and endpoint management. Delivered modern workplace transformations for ministries and large organisations, remote and hybrid.
Server and network infrastructure, on-premises to cloud migrations and lifecycle management. 22 years of experience with enterprise environments, from design to operations.
A selection of recent assignments across government, finance and enterprise.
Recurring Citrix and NetScaler assignments at this Dutch water authority. Workspace modernisation, NetScaler upgrades and XenServer management across multiple engagements.
Citrix lifecycle management, modernisation, NetScaler and XenServer. Ongoing partnership with De Connectie, digital service provider for the municipality.
Workspace modernisation and AVD deployments for multiple Dutch ministries. From Citrix infrastructure to Microsoft 365 and Azure Virtual Desktop rollouts.
Management and optimisation of enterprise Citrix ADC (NetScaler) infrastructure at the central bank. Via Centric.
Looking for flexible IT support? Choose from a subscription, hour pack or ad-hoc engagement. No long-term commitment required.
Choose the support model that fits your organisation: monthly subscription, hour pack or ad-hoc engagement.
A fixed monthly amount of IT support at an attractive flat rate. Includes monitoring, updates and a dedicated point of contact.
View plansReliable on-demand IT support without a monthly commitment. Purchase a bundle of hours at a discount. Valid for 12 months.
View hour packsImmediate assistance without obligations. Ideal for one-off assignments, urgent questions or a first introduction to our services.
Get in touchOn-premises to cloud, hybrid environments and Azure Virtual Desktop setup.
Microsoft 365, Teams, SharePoint and AVD configured to your organisation.
Periodic cybersecurity audits, awareness training and incident response plans.
Proactive system monitoring, monthly health checks and optimisation advice.
Certainty, clarity and no surprises. Choose the plan that fits your organisation.
For small organisations needing affordable, light-touch IT support.
💡 Ideal for small offices and freelancers
For businesses that want to proactively manage and optimise their IT.
💡 Ideal for growing SMEs
Maximum availability, security and complete peace of mind.
💡 Ideal for critical processes & multiple locations
Additional hours: €120/hr excl. VAT · You always receive advance notice when approaching your limit
On-demand IT support with no monthly commitment. Buy hours upfront at a discount and use them whenever you need.
Take the free IT Scan and find out which support model best fits your organisation.
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| Feature | Ad-hoc | Hour Pack | Subscription |
|---|---|---|---|
| Hourly rate | €120 | from €102 | from €98 |
| Response time | 3 business days | 2 business days | Up to 4 hours |
| Incident priority | — | ✓ | ✓ |
| Guaranteed availability | — | ✓ | ✓ |
| Monitoring & reporting | — | — | ✓ |
| On-site visits | On request | From ½ day | Included (Pro/Premium) |
| Billing method | Invoice afterwards | Single upfront invoice | Direct debit |
| Commitment | None | None | Monthly cancellable |
| 24/7 incident response | — | — | Premium only |
With years of experience in infrastructure management and cloud migrations, we guide your organisation step by step to a modern, secure IT environment.
Cybersecurity is no longer an afterthought. With periodic audits, awareness training and a solid incident response plan, we ensure your organisation stays protected and can recover quickly.
Identifying and addressing vulnerabilities before they become problems (Pro & Premium).
A recovery plan so your business is back operational quickly after an incident.
Your employees are the first line of defence. We help them stay vigilant.
With comprehensive monitoring and monthly reports, you always have full visibility into the status of your systems, backups and network infrastructure. No need to check yourself.
Take the free IT Scan, completely without obligation. In a few minutes you get a clear picture of your IT needs and a personal recommendation for the right support model.
✅ Takes only a few minutes
✅ No obligation whatsoever
The Basic plan includes 6 hours of remote IT support per month, proactive monitoring of critical components, updates & maintenance of workstations and servers, a monthly health check with a brief report and short advice on recurring IT issues.
No, that's not required. You can also choose an hour pack or the ad-hoc rate of €120 (excl. VAT). Ideal for temporary projects, urgent questions or a first introduction.
Standard response within one business day. With Pro or Premium we agree on shorter response times. The Premium plan includes 24/7 incident response.
Standard fully remote. On-site visits are possible and can be included in Pro (1×/quarter) and Premium (1×/month), or booked separately via an hour pack (from half a day). Travel costs outside the Rotterdam region are discussed in advance.
Yes, all subscriptions are adjustable monthly. Notify us at least 10 days before the new month and it will be arranged immediately.
With Basic and Pro, unused hours expire at the end of the month. With Premium you can roll over unused hours for 1 month. Hour pack hours are valid for 12 months.
Infrastructure management, cloud migrations (particularly on-premises to cloud), Microsoft 365, Azure Virtual Desktop, Citrix and NetScaler environments. With a broad IT background, onboarding to new systems is always swift.
I typically respond within one business day. A no-obligation introduction is always possible.
