System Engineer (Infrastructure & Network)

Quick Facts

• Role: System Engineer (Infrastructure & Network)

• Focus: Infrastructure operations, network engineering, and network-adjacent security

Description

You operate and evolve LAN/WLAN/WAN and VPN infrastructures, administer switching/routing, VLANs and subnetting, and support DNS/DHCP services. You maintain firewall-based site connectivity, analyze and resolve complex network and infrastructure incidents, and develop network segmentation, monitoring, and IT security. You plan and implement network changes, migrations, and infrastructure projects, while collaborating on adjacent areas such as Windows Server/Active Directory, Entra ID, backup, storage, and virtualization.

Responsibilities

• Operate and further develop LAN, WLAN, WAN, and VPN infrastructures

• Administer switching, routing, VLANs, subnets, DNS, and DHCP

• Support firewalls, site interconnections, and secure communication relationships

• Analyze and resolve complex network and infrastructure incidents

• Develop network segmentation, monitoring, and IT security

• Plan and implement network changes, migrations, and infrastructure projects

• Contribute to adjacent topics (Windows Server, Active Directory, Entra ID, backup, storage, virtualization)

• Create technical documentation and coordinate with providers and external service providers

• Standardize and automate recurring operational tasks

• Work according to defined ITSM, Change, Incident, and operational processes

Requirements

• Proven experience as a System Engineer with a professional focus on networking, site networking, infrastructure operations, and network-adjacent security topics

• Knowledge of TCP/IP, routing and switching, VLANs and subnetting

• Experience with LAN, WLAN, WAN, VPN, DNS, and DHCP

• Experience with firewalls, network monitoring, and troubleshooting

• Ability to work on network segmentation and secure network architectures

• Openness and interest in adjacent topics including Security, Identity & Access Management, backup, storage, virtualization, and Microsoft infrastructures

• Ideally experience or strong interest in Windows Server and Active Directory, Microsoft 365, Entra ID and Azure, Identity & Access Management, backup/recovery, storage, virtualization, monitoring/logging, and PowerShell or automation

• Structured, analytical, and solution-oriented approach; ability to resolve technical problems sustainably

• Ability to take ownership of systems, changes, and tasks and document them comprehensibly

• Security-conscious working style and ability to assess risk, effort, and operational safety pragmatically

• Professional collaboration with internal stakeholders and external providers

• Willingness to adhere to and actively help shape standards and processes; calm and reliable conduct during incidents

Benefits

• Work-life journey support

• Health management

• Development opportunities

• Additional benefits