IT Infrastructure
Built to Move Fast.

Dublin-Based  ·  Est. 2000  ·  01 873 3588

We design, secure, and manage your entire IT environment — so your team stays focused on the work that grows your business, not the technology behind it.

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25+
Years Active
300
Users Supported
99%
Client Retention
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What We Do

Everything Your Business IT Needs.

One partner. Every layer — from structured cabling to cloud platforms, communications, and cybersecurity.

Technology Partners
Trusted Alliances. Proven Platforms.
We partner with the world's leading technology vendors to deliver best-in-class solutions for your business.
Certified Partner Network
Microsoft
Ubiquiti
HP
Dell
Lenovo
Trend Micro
Poly
Kingston
Zebra
Cloudflare
Synology
Managed IT Services

Your IT team, without the overhead.

Running a business shouldn't mean running an IT department on the side. We become your outsourced tech team — proactively monitoring, maintaining, and optimising everything so problems get resolved before you notice them.

  • Proactive monitoring & automated patching
  • Remote & on-site support, same business day
  • Hardware & software procurement
  • IT strategy & annual roadmap planning
  • Full asset management & documentation
  • Dedicated account manager
Talk to Our Team  →
castle-it · infrastructure monitor
Office LAN — Ubiquiti● 47 devices
Perimeter Firewall● Blocking 12/hr
Microsoft 365 Tenant↑ Syncing…
Cloud Backup● Last: 4 min ago
Endpoints — 3 devices⚠ Patch pending
Remote Workers● 8 active
99.8%
Uptime
↑ 30 day avg
14ms
Avg Latency
↓ vs last week
0
Threats Today
✓ All clear
Remote Support

Instant help.
Wherever you are.

Our engineers connect to your machine securely in seconds — seeing exactly what you see, fixing exactly what's broken. No on-site visit needed.

You remain in full control throughout the session. Share your screen, watch us work, or take back control at any time.

castle-it · remote diagnostic
Remote Support Portal
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I'm a Technician

Enter your name and the support key provided by your Castle Computers engineer to start your session.

No key? fastsupport.gotoassist.com

Castle Computers team members: launch GoTo Assist to start or manage a remote support session.

app.gotoassist.com

First time using remote support?

Call us on 01 873 3588 and we'll walk you through the process.

Ready to simplify your IT?

Get in touch for a no-obligation review of your current setup. We'll show you exactly what we'd do — and what it'll cost.

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