Infrastructure Engineer/ Administrator (Red Hat Enterprise Linux/ RHEL)

Arηs is a fully independent group of companies specialized in managing complex IT projects and systems for large organisations, focusing on state-of-the-art software development, business intelligence and infrastructure services.

We are composed of 13 entities across 6 countries that are unified by the Arηs Group, with more than 1750 consultants.

This corporate structure enables us to respond quickly to market changes and customer requests, and to communicate and make decisions without layers of bureaucracy.

Our success can be attributed to the synergy among our nine complementary entities, combined with our methodologies, which are based on the Rational Unified Process (RUP) and the Scrum agile software development framework.

Established in 2016, the Greek entity Arηs Developments Hellas aims to extend Arηs Group activities dedicated to the European market providing high-quality services in Software Development, covering the entire application development lifecycle: starting with user requirements, business process redesign and specifications, to continue with development, testing and application maintenance.

• Release Management: Deploy ICT solutions in both non-production and production virtualized environments, following provided Infrastructure Designs and the organization's processes and procedures. This includes performing infrastructure and middleware maintenance.
•  Security Compliance: Ensure that all deployed ICT solutions comply with security policies and best practices. Monitor and address vulnerabilities, implementing necessary patches and security upgrades.
• Collaboration with Stakeholders: Liaise with other teams, such as deployment team, security, and service management, to ensure alignment on technical requirements and deliverables.
• Continuous improvements: Design, document and implement automation for recurring tasks, optimize existing processes and update installation, technical, support, and maintenance documentation.
• Change Management: Participate in change management processes, including reviewing, planning, and executing changes while ensuring minimal disruption to services.
• Capacity Planning and Performance Monitoring: Conduct regular assessments of system performance, identify potential bottlenecks, and provide recommendations for scalability and future growth.
• Disaster Recovery and Backup Management: Design and implement disaster recovery strategies, including regular backups and restoration tests, to ensure business continuity.
• Incident Reporting and Root Cause Analysis: Document incidents, perform root cause analysis, and recommend long-term solutions to prevent recurring issues and support other teams with.
•  Training and Knowledge Transfer: Provide technical training or knowledge transfer to internal teams, ensuring smooth handovers and self-sufficiency in routine tasks.
• Assigned ticket handling: Promptly address incident and change tickets assigned through the ITSM tool, ensuring they are handled immediately upon assignment. This includes following up, prioritizing tasks, and resolving them within the established timeframes and according to SLAs.

Mandatory:

• Bachelor's plus 9 years of relevant experience.
• Advanced communication skills experience demonstrated through the ability to consistently collaborate effectively with team members, stakeholders, and clients. This includes the experience with clearly explaining complex technical concepts to both technical and non-technical audiences, delivering regular and comprehensive status updates, and thoroughly documenting processes and issues
• 5 years of experience in ICT Infrastructure operations responsible for the life cycle of RHEL vms and Kubernetes clusters
• 2 years of experience with deployment, maintenance and troubleshooting of Kubernetes containers
• 5 years of experience with automation solutions deployments and scripting technologies
• Knowledge of Linux Server Environments
• Knowledge of VMWare virtualization environments
• Knowledge how to design, document and implement automation for recurring tasks, optimize existing processes and update installation, technical, support, and maintenance documentation.
• Good knowdledge of English equal to B2 level according to CERF.

Desirable:

• Experience in Microsoft
• Active Directory (AD) and Federation Services (ADFS) at enterprise level
• Knowledge of LDAP concepts
• Knowledge of Microsoft Server 2019 and/or Microsoft Server 2022 OS
• Knowledge of SQL server, MariaDB and/or PostgreSQL