Linux System Administrator | On-Call & Preventive Support

We are looking for an experienced Linux System Administrator to join a team responsible for the operation, maintenance, and continuous improvement of critical infrastructure environments. The successful candidate will play a key role in ensuring system availability, stability, and performance while participating in preventive maintenance activities and an on-call support rotation.

Key Responsibilities

• Administer, maintain, and support Linux-based production environments.
• Monitor system performance, availability, and capacity, proactively identifying potential issues.
• Investigate and resolve incidents, service requests, and infrastructure-related problems.
• Participate in preventive maintenance activities to ensure service reliability and operational excellence.
• Take part in an on-call rotation and provide support outside business hours when required.
• Manage and support database environments, preferably SQL-based.
• Develop and maintain scripts to automate operational and administrative tasks.
• Collaborate with infrastructure, application, and support teams to deliver stable and scalable solutions.
• Follow IT Service Management processes and best practices aligned with ITIL.
• Contribute to cloud, automation, and infrastructure optimization initiatives.

• 5+ years of experience in System Administration or Infrastructure Operations.
• Strong hands-on experience with Linux system administration.
• Solid knowledge of infrastructure operations and system support.
• Experience working with SQL databases.
• Understanding of ITIL processes and service management best practices.
• Knowledge of scripting for automation and task optimization, technologies such as Shell/Bash and Python.
• English proficiency at C1 level (written and spoken).
• Availability to participate in on-call and preventive support rotations.
• Strong communication and interpersonal skills.

Nice to Have

• Experience with Dynatrace.
• Knowledge of DevOps practices and methodologies.
• Experience with Ansible.
• Experience working with Cloud platforms (AWS, Azure, or Google Cloud).
• Familiarity with Infrastructure as Code (IaC) concepts and automation frameworks.

Soft Skills

• Strong problem-solving and analytical skills.
• Proactive attitude and ownership mindset.
• Ability to work independently and as part of a team.
• Excellent organizational and prioritization skills.
• Customer-oriented approach.
• Strong communication and stakeholder management abilities.
• Adaptability and willingness to learn new technologies.

Location / Work Model

• Lisbon, Portugal - Hybrid work model
• This position includes participation in an on-call support rotation and preventive maintenance activities.
• The role offers the opportunity to work in a challenging and dynamic environment, supporting critical systems and contributing to automation and cloud transformation initiatives.