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Linux System Administrator | On-Call & Preventive Support
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Full-time
Posted 5d ago
~40 hrs/week
Responsibilities
The Linux System Administrator will manage, maintain, and monitor critical Linux-based production environments to ensure high availability and performance. They will also participate in on-call rotations, perform preventive maintenance, and develop automation scripts to optimize infrastructure operations.
Requirements
Candidates must have at least 5 years of experience in system administration, with strong proficiency in Linux and SQL databases. A solid understanding of ITIL processes, scripting languages like Python or Bash, and excellent communication skills are required.
Full job description
Company Description
Inetum is a European leader in digital services, supporting organizations as they navigate continuous technological change. The company helps clients accelerate their digital transformation through a broad portfolio that includes consulting, application services, digital engineering, cloud, cybersecurity, platforms, and infrastructure services
Job Description
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.
Qualifications
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.
Additional Information
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.
Inetum is a European leader in digital services. Inetum’s team of 26,000 consultants and specialists strive every day to make a digital impact for businesses, public sector entities and society. Inetum’s solutions aim at contributing to its clients’ performance and innovation as well as the common good.
Present in 19 countries with a dense network of sites, Inetum partners with major software publishers to meet the challenges of digital transformation with proximity and flexibility.
Driven by its ambition for growth and scale, Inetum generated sales of 2.2 billion euros in 2025.
🏅 Top Employer in 9 countries
Offices: 5, Rue Touzet Gaillard, St.-Ouen, Île-de-France 93400, FR · Calle de Serrano Galvache, 56, Edificio Encina, Planta 7, Madrid, Communauté de Madrid 28033, ES · Avenida Dom João II, N° 44C, Piso 4,, Parque das Nações, Lisbonne 1990, PT · 1100 Boulevard Al Qods,, Casa NearShore 2B, 3°étage, Casablanca, MA · A. Vaucampslaan 42, Industriezone Zenneveld,, Huizingen, Région flamande 1654, BE
How many Engineering jobs are open in Lisbon, Portugal right now?
There are currently 1,112 open engineering positions in Lisbon, Portugal listed on Clera. New openings are added daily as companies post roles.
Which companies are hiring for Engineering roles in Lisbon, Portugal?
Companies currently hiring include Capgemini, Inetum, Claranet Portugal, Devoteam, VOIS, among others. Browse the listings above to see every active employer.
Are there remote or hybrid Engineering jobs in Lisbon, Portugal?
Yes — 756 of the 1112 open engineering positions offer remote or hybrid work (135 remote, 621 hybrid).
How do I apply for Engineering jobs in Lisbon, Portugal?
Each listing links directly to the employer's application page. Apply early — fresh listings get the most recruiter attention in the first two weeks.