We are continuously growing and we are looking for a Senior Linux System Engineer to join our UniQue CIET team, part of our Professional Services Department.
This role requires a proactive individual who can troubleshoot and resolve issues, automate routine tasks, and implement security best practices. You will collaborate with other IT professionals, developers, and stakeholders to deliver reliable and scalable solutions. Key duties include monitoring system performance, applying patches and updates, managing user accounts and permissions, and maintaining backup and disaster recovery procedures.
Our UniQue people come from a variety of different backgrounds and industries, with different skillsets and approaches, but they have one thing in common: passion for technology and innovation!
The ideal candidate will have a strong understanding of networking concepts, scripting languages, and cloud environments. You should be comfortable working in a fast-paced innovative environment and be able to prioritize tasks effectively. Excellent communication skills and a commitment to continuous learning are essential.
Knowledge of containerization technologies such as Docker and Kubernetes or tools like Ansible, Puppet is a plus.
For the Senior Linux System Engineer role we expect you to:
- Install, configure, and maintain Linux servers in a virtualized or bare metal environment.
 - Perform system monitoring, performance tuning, verifying the integrity and availability of systems, and troubleshoot issues.
 - Review system and application logs, and verifying completion of scheduled jobs such as backups.
 - Apply OS and security patches and upgrades on a regular basis.
 - Automate routine tasks using scripting languages and configure/add new services as necessary
 - Manage user accounts, permissions, and access controls
 - Document system configurations and procedures
 - Ensure system security and compliance with policies through the implementation of best-practice policies and procedures.
 - Implement and maintain backup and disaster recovery solutions
 - Collaborate with IT and development teams on projects
 
Requirements
Your experience, skillset and qualifications are going to help you succeed in this position, moving forward.
- A University/College Degree in Computer Science, Information Technology, or a related field
 - 5+ years of proven hands-on experience as a Linux System Administrator
 - Strong knowledge of Linux operating systems (e.g., Red Hat , Ubuntu, AlmaLinux)
 - Knowledge of scripting languages such as Bash or Python in order to create and manage scripts to perform system tasks
 - Experience with virtualization platforms (Experience on Cloud platforms is a plus)
 - Ability to troubleshoot and resolve technical issues
 - Experience with automation software (e.g. Ansible) is a plus
 - Familiarity with containerization and orchestration tools (e.g., Docker, Kubernetes) is a plus.
 - Solid understanding of networking protocols and services (TCP/IP, DNS, DHCP, LDAP, etc.).
 - Strong communication and documentation skills
 - Effective problem solving skills
 - Collaborative attitude with both internal and external business stakeholders
 - Certifications in Red Hat Certified System Administrator (RHCSA) or Red Hat Certified Engineer (RHCE) are desirable
 
Benefits
What are we offering to our UniQue IT People?
- People-first approach and open environment to express your ideas
 - Work-life balance and a hybrid work model
 - Continuous training and development
 - Opportunities to join innovation initiatives
 - Ticket restaurant – meal vouchers
 - Corporate laptop and equipment
 - Corporate mobile phone subscription
 - Health and insurance plan for you and your family members
 - Employee consulting and guidance support
 - Discounts on the services and products of our Group’s companies
 - Gift vouchers for major life milestones
 - Special work schedule on summer Fridays and birthdays
 
Our UniQue IT people are the most valuable part of Uni Systems; their knowledge and experience have made us the leading and reliable systems integrator of today and have contributed to our steady financial growth. We have created and are maintaining a stable working environment for our employees, with countless opportunities to innovate and thrive. Our work culture recognizes our UniQue IT people and supports the free sharing of ideas and the flow of information via open communication while appreciating and effectively utilizing the talents, skills, and perspectives of each employee.
At Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at our Diversity, Equality & Inclusion Policy for more information.
Top Skills
What We Do
                                    Uni Systems, a member of Quest Group, has been a reliable ICT partner to companies and organizations in the European market for over 60 years. We are the first IT company founded in Greece, in 1964, and we have been supporting our clients ever since. Trusting customers, extensive solutions offering, strong partnerships and experienced people, those are the main grounds for Uni Systems’ rapid expansion of operations across geographies and industries.
With more than 1450 specialized ICT professionals, established presence in more than 20 countries, and branches and subsidiaries in the heart of the European Union (Athens, Barcelona, Brussels, Bucharest, Luxembourg and Milan), we are effectively addressing the needs of European and International organizations and institutions and delivering value-added integrated solutions to our customers. 
Through our strong industrial vertical expertise, supported by the range of our horizontal solutions, we hold a substantial and successful track record in the delivery and implementation of large-scale, mission-critical projects in the sectors of Banking & Finance, Enterprise & Utilities, Government, and Telecommunications, as well as in EU Institutions and Agencies. 
Participations in real commercial implementations of best practices (i.e. ITIL, RUP, PRINCE2, PMI), has provided our people with significant experience, unique know-how and proven capability in designing, implementing and successfully supporting complex ICT projects, through a range of solutions and business areas.
At Uni Systems, we support innovation, and we have been investing in the European and National research ecosystem. Our Research and Innovation (RDI) department has been successfully bidding and winning a series of research programs in promising technological areas, such as 5G, AI in Health, and Blockchain in Governance.
Enabling our clients' digital transformation journey is our passion and we remain strongly committed to it.
                                







