IT Systems Technician
Malte Barner builds resilient collaboration systems and supports digital transformation.
sip.log
[09:41:12.220] INVITE sip:collab@lab.local SIP/2.0
[09:41:12.221] Via: SIP/2.0/UDP 10.10.10.5:5060;branch=z9hG4bK-1
[09:41:12.221] From: \"Malte\" <sip:malte@lab.local>;tag=2b5f
[09:41:12.221] To: <sip:collab@lab.local>
[09:41:12.224] 100 Trying
[09:41:12.410] 180 Ringing
[09:41:12.912] 200 OK (SDP: opus/48k)
[09:41:13.006] ACK
About
Systems-first mindset
I focus on clean architectures, availability, and operational clarity.
Collaboration expertise
Deep experience in various stacks, from design and rollout to upgrades and maintenance.
IoT & home automation
LoRaWAN-based deployments on the job, Home Assistant and ZigBee at home.
Certifications
Current
-
CISCO CCNP Collaboration
- ├─ CCS Collaboration Core
- └─ CCS Collaboration Cloud & Edge Implementation
Past
-
AVAYA IP Office Platform
- ├─ Implement Certified
- ├─ Support Certified
- └─ Midsize Solutions Sales Proficient
- MITEL MiVoice 400 Technical Certification
- ESTOS Expert Partner 2024
- SOPHOS Firewall Engineer v20
Skills
General IT focus
Voice & Video Infrastructure
Network Infrastructure
Virtualization
IoT & Automation
Vendors & Platforms
Cisco Advanced Collaboration
Avaya IP Office Platform
Mitel MiVoice Office 400
VMware ESXi
Proxmox
Docker
Contact
Questions or just a quick hello — feel free to reach out.