Telecom Lab Systems Administrator

Demant Polska; Denmark; Hybrid; DKK 520,000 - 640,000; Full time

Job summary

EPOS Group A/S is seeking a System Administrator to own and evolve the Telecommunication Lab infrastructure, including lab sites, desk phones, VoIP, and monitoring tools.

You will support R&D, Support, and external partners with testing and development needs, working across Linux, Windows, and VMware environments.

This hands-on role requires strong networking, security, and communication in English, with opportunities to shape future lab capabilities.

Qualifications

• Solid knowledge of IP networking and network security.
• Experience with VoIP, SIP, unified communications, and telephony systems.
• Familiarity with provisioning of desk phones and softphone platforms.

Responsibilities

• Maintain and administer the Telecommunication Lab, including softphones, desk phones, backend systems, and remote lab sites.
• Keep all equipment updated with the latest secure firmware and software versions.
• Manage firewall, VPN, VLAN, DNS, DHCP, and network configurations (pfSense).
• Oversee Linux servers (Debian), VMware ESXi, Proxmox test environments, and Synology backups.
• Monitor health systems (e.g., Zabbix) and ensure security.
• Configure and manage VoIP systems, SIP profiles, PBX integrations, and softphone clients.
• Handle firmware updates and SIP provisioning for IP desk phones.
• Assist Support and R&D with Lab infrastructure requests.
• Provide user support for lab equipment and access.
• Coordinate with vendors and internal experts on specialized tasks.
• Maintain documentation of systems, networks, configurations, diagrams, and procedures.
• Ensure remote lab locations are secure and aligned with central configuration.

Skills

IP networking

Network security

VoIP

SIP

Unified communications

Telephony systems

Windows admin

Linux admin

macOS admin

English communication

Collaboration

Problem solving

Education

CCNA or similar

Tools

pfSense

Zabbix

VMware ESXi

Proxmox

Synology

Job description

EPOS Group A/S is seeking a System Administrator to own and evolve the Telecommunication Lab infrastructure, including lab sites, desk phones, VoIP, and monitoring tools.

You will support R&D, Support, and external partners with testing and development needs, working across Linux, Windows, and VMware environments.

This hands-on role requires strong networking, security, and communication in English, with opportunities to shape future lab capabilities.