Senior Linux Systems Administrator

💼 Senior Linux Systems Administrator - Cyprus or Greece

The Role:
As our new Senior Linux Systems Administrator, you'll join a team of talented engineers responsible for delivering mission-critical ultra-low latency services to millions of clients worldwide. You'll participate in automating, securing, ensuring the highest availability of the infrastructure, and assisting the team in improving operational efficiency.

Main Responsibilities:

• Oversee and manage our entire Linux-based platform infrastructure, leading the planning, design, implementation, and automated maintenance of system-level software and infrastructure.
• Design and develop complex, scalable, and highly available system architectures.
• Perform continuous health monitoring, improve the stability/performance of Linux Systems, and troubleshoot issues that may arise.
• Stay at the forefront of industry trends and emerging technologies, providing strategic insights to optimize our infrastructure and operations.
• Produce and maintain high-quality technical documentation related to system architectures, processes, and incident reports.
• Liaise with cross-functional teams, including Application Support (SRE), Development, Security, and vendors to deliver optimum and secure solutions.
• Provide technical leadership and mentorship to a team of engineers, promoting best practices in Linux system administration, architecture, and security.
• Participate in teams on-call rotation.

Main Requirements:

• BSc/MSc in Computer Science, Information Technology, or a related field; or equivalent work experience.
• 3+ years of Linux Systems administration; deep knowledge and experience with RedHat-based Operating Systems.
• Expertise with shell command line usage, scripting, and automation.
• Deep understanding of Linux kernel, system internals, tuning, performance optimization, and debugging.
• Strong knowledge of network protocols and principles, including multicast, TCP/IP, DHCP, NTP, and DNS.
• Hands-on experience in administering, provisioning, configuring, tuning, and monitoring application web servers (Apache/Nginx), databases (SQL and NoSQL), logging (ELK), and HA systems (HAProxy).
• Experience with best practices of virtualized and/or containerized environments (VMware/VirtualBox/Docker).
• Experience with technologies and methodologies of CI/CD processes (GitLab/Jenkins).
• Self-driven, with the ability to take ownership of issues and follow them through to complete resolution.
• Ability to use your initiative, prioritize tasks, and work independently and/or within a team.
• Strong technical documentation abilities.
• Excellent verbal and written English communication skills.
• Excellent problem-solving skills and strategic thinking with a focus on innovation and process improvement.

Advantages:

• RHEL/LPI Certification.
• Experience with Content Delivery Networks (AWS CloudFront/Akamai Ion).
• AWS Certification.
• Terraform/Ansible experience.
• Expertise with container technologies like Docker and orchestration platforms like Kubernetes.

Benefits:

• Attractive remuneration package plus performance-related rewards.
• Private health insurance.
• Corporate pension fund.
• Intellectually stimulating work environment.
• Continuous personal development and international training opportunities.

All applications will be treated with strict confidentiality!