Senior Linux Engineer

Job Title : Senior Linux Engineer

Location : Brussels - next to public transport

Contract : Freelance / long-term mission (+2 years)

About the Role

We are looking for a System Engineer to join a Sysadmins team responsible for ensuring that tailor-made infrastructure solutions for clients in the railway and mobility sector operate smoothly. You’ll work across a variety of technologies — on-premise, hybrid, and cloud — all requiring high levels of availability, continuity, and security.

Key Responsibilities

• Maintain, install, and configure both hardware and software components.
• Participate in migration projects, testing, debugging, and deploying updates or patches.
• Ensure infrastructure and data security, while maintaining system stability.
• Monitor and resolve incidents, failures, and changes to keep environments operational.
• Provide second-line support, including participation in an on-call rotation.
• Research and implement new technologies and tools to improve operational efficiency.
• Contribute to testing, documentation, and implementation processes.
• Perform on-site interventions at customer locations (31 sites across Belgium).

What We’re Looking For

Professional & Personal Skills:

• Structured, precise, and detail-oriented working style.
• Strong documentation mindset (writing and maintaining documentation is second nature).
• Excellent team player with strong communication skills.
• Knows when to work independently and when to seek support.
• Able to perform under pressure.
• Customer-focused, discrete, and professional in interactions with clients.
• Willing to support go-live and hypercare phases (occasionally during nights or weekends).
• Flexible regarding working hours and travel within Belgium.

Required Technical Skills

• Strong knowledge of Linux (Red Hat) systems and scripting (bash or similar).
• Solid experience with VMware, including vSphere, vCenter, and vMotion.
• Basic understanding of network administration (routers, switches, VPN, firewalls).
• Fluency in Dutch and French (spoken and written).
• Experience in high-availability production environments.

Nice-to-Have Skills

• Experience with Veeam (setup, configuration, administration).
• Puppet (Open Source) administration.
• Monitoring tools: Nagios, Zabbix.
• Openshift and Elastic Stack (including Kibana).
• Database knowledge: MySQL, PostgreSQL.
• Atlassian Suite (Jira, Confluence, Git).
• GIT version control.
• Familiarity with Stratus and Fujitsu hardware.

If you’re passionate about IT operations, value teamwork, and want to contribute to reliable and secure infrastructure environments, we’d love to hear from you.