Mid-Senior Systems Engineer (Linux, K8s/OpenShift & AWS)

Job description

🏢 About Actionline

Actionline is a Greek company specializing in innovative Human Resources and Recruitment solutions since 2011. On behalf of our client, a leading company in the Energy sector, we are seeking an experienced Mid-Senior Systems Engineer to join a dynamic and highly skilled team.

📌 Location: Athens 🏢 Industry: Energy 💼 Employment Type: Full-time 📍 Work Model: On-site

🔹 Position Overview

We are seeking a highly skilled Mid-Senior Systems Engineer  with strong cloud and container expertise. In this role, you will be a key contributor to managing, automating, and scaling our enterprise Linux environments, hosted primarily on Amazon Web Services (AWS)  and orchestrated via OpenShift or Kubernetes .

The ideal candidate bridges the gap between modern cloud architecture and robust system administration. If you have deep Linux expertise , hands-on AWS experience , and a passion for managing containerized workloads at scale, we want you on our team.

🔎 Key Responsibilities -   Cloud Architecture & Support:  Design, deploy, and maintain scalable, highly available infrastructure utilizing core AWS services  (EC2, EKS, IAM, S3). - Container Orchestration:  Manage, scale, and optimize production Red Hat OpenShift or Kubernetes  clusters (including AWS-managed solutions like EKS). - Linux Platform Management:  Administer, configure, and fine-tune enterprise Linux operating systems  (RedHat/Oracle Linux, Ubuntu) for optimal cloud performance. - Infrastructure as Code (IaC):  Drive automation by provisioning and managing AWS resources using Terraform  or Ansible. - Monitoring & Cost Optimization:  Implement robust cloud monitoring, logging, and alerting systems while proactively optimizing AWS resource usage and costs. - Security & Compliance:  Enforce cloud security best practices, handling OS hardening, AWS IAM policies, and network security groups. - Cross-Functional Collaboration:  Partner with Dev and DevOps teams to ensure smooth application deployment pipelines and infrastructure resilience.

✅ Qualifications & Experience - Experience:   5 years of experience  in Systems Engineering or Cloud Operations role. - AWS Expertise:  Proven track record of configuring and managing production workloads in AWS environments . - Linux Proficiency:  Advanced administration skills, deep understanding of networking (TCP/IP, DNS, routing), and strong scripting abilities (Bash, Python). - Containerization:  Hands-on experience orchestrating containers with OpenShift  or Kubernetes  in enterprise settings. - Automation Tools:  Practical experience with infrastructure automation tools, specifically Terraform  and Ansible . - Problem-Solving:  Analytical mindset with a strong track record of troubleshooting complex cloud and container infrastructure issues.

✅ Preferred Attributes - Certifications:  AWS Certified SysOps Administrator / Solutions Architect, Certified Kubernetes Administrator (CKA), or Red Hat certifications (RHCE). - CI/CD Tools:  Familiarity with modern deployment pipelines (GitLab CI, Jenkins, ArgoCD). - Cloud Networking:  Advanced knowledge of AWS networking components, Transit Gateways, and hybrid cloud connectivity.

🎯 Personal Skills - Strong troubleshooting and problem-solving skills - Self-motivation and proactive mindset - Ability to prioritize and manage multiple tasks simultaneously - Strong collaboration and teamwork skills - Excellent communication abilities - Flexibility and adaptability in a fast-paced environment - Continuous improvement and quality-oriented mindset

🚀 Ready to take the next step in your Cyber Security career?

📩 For more information, contact us at 4u@actionline.gr or 📞 210 3637822

Benefits