Senior IT System Administrator – Linux & Automation

Avular; Eindhoven; Hybrid; EUR 50,000 - 65,000; Full time

Benefits offered by this job

Salary based on experience

Non-contributory pension

Travel cost reimbursement

Participation plan

Game nights & team events

30 paid vacation days

Coffee, snacks and refreshments

Job summary

Avular is seeking a hands-on IT System Administrator to strengthen our IT team and sustain a Linux-driven, containerised environment. You will support Windows and Linux/macOS devices, manage Microsoft 365/Entra ID, and handle the Atlassian stack, virtualization, and Fortinet networking from our Strijp-T office in Eindhoven.

You’ll contribute to monitoring, service desk, asset management, and security/compliance efforts, while documenting and automating recurring tasks to keep knowledge in the

Qualifications

• Degree (MBO+/HBO) in IT or comparable field, or equivalent experience.
• At least 3 years of professional experience as a system administrator or in a similar role.
• Strong Linux administration (Ubuntu) foundation.
• Solid networking fundamentals (TCP/IP, DNS, DHCP, VPN, VLANs).
• Experience with Microsoft 365 and Entra ID.
• Scripting skills (Bash, PowerShell or Python).
• Independent, solution-oriented mindset with a focus on security.
• Good proficiency in Dutch and English (team is international).
• Bonus: Fortinet networking equipment experience.
• Bonus: Proxmox or other virtualization platforms.
• Bonus: Intune/endpoint management and Docker.
• Bonus: familiarity with compliance or security frameworks (NIS2, CRA, ISO 27001).

Responsibilities

• Manage Windows devices (50+) via Microsoft Intune, including Autopilot onboarding, updates and security baselines.
• Manage Linux/Ubuntu (~30) and macOS (~10) devices, via Intune and Apple Business Manager.
• Administer Microsoft 365 and Entra ID: users, devices, access and security, including onboarding/offboarding.
• User and access management across Jira & Confluence (Atlassian stack).
• Manage virtualization and backup infra: Proxmox cluster, Proxmox Backup Server, ZFS, Synology NAS.
• Maintain building-wide network on Fortinet stack (FortiGate, FortiSwitch, FortiAP).
• Monitor and log health using Zabbix and Grafana; act on alerts.
• Run service desk and asset management (GLPI, Snipe-IT) with proper ticket flow; provide first/second-line support.
• Handle facilities IT: printers, door access, cabling, and office projects.
• Assist with procurement and asset lifecycle; contribute to security/compliance (NIS2, EU Cyber Resilience Act).
• Document and automate recurring work to retain knowledge in the team.

Job description

Avular is seeking a hands-on IT System Administrator to strengthen our IT team and sustain a Linux-driven, containerised environment. You will support Windows and Linux/macOS devices, manage Microsoft 365/Entra ID, and handle the Atlassian stack, virtualization, and Fortinet networking from our Strijp-T office in Eindhoven.

You’ll contribute to monitoring, service desk, asset management, and security/compliance efforts, while documenting and automating recurring tasks to keep knowledge in the