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

Internetwork Expert; Kentucky; On-site; USD 100,000 - 150,000; Full time

Job summary

Actionline, on behalf of our client in the Energy sector, is seeking a Mid-Senior Systems Engineer to join a dynamic team. The role focuses on managing, automating, and scaling enterprise Linux environments hosted on AWS and orchestrated with OpenShift or Kubernetes.

You will bridge cloud architecture with robust system administration, leveraging Terraform and Ansible. Strong Linux, AWS, and container experience are essential for success in this enterprise environment.

Qualifications

• 5+ years of experience in Systems Engineering or Cloud Operations.
• Proven track record configuring and managing production workloads in AWS.
• Advanced Linux administration with networking knowledge and scripting skills.
• Hands-on experience orchestrating containers with OpenShift or Kubernetes.
• Practical experience with infrastructure automation tools Terraform and Ansible.

Responsibilities

• Design, deploy, and maintain scalable, highly available AWS-based infrastructure.
• Manage production OpenShift or Kubernetes clusters in enterprise settings.
• Administer enterprise Linux operating systems for cloud performance.
• Drive IaC through provisioning and managing AWS resources with Terraform/Ansible.
• Monitor, log, and optimize cloud costs and security in partnership with teams.

Skills

AWS

Linux

OpenShift

Kubernetes

Terraform

Ansible

Bash

Python

Cloud Architecture

Automation

Tools

Terraform

Ansible

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 Engineerwith 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 Kubernetesclusters (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 Terraformor 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 experiencein 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 OpenShiftor Kubernetesin enterprise settings.
• Automation Tools:Practical experience with infrastructure automation tools, specifically Terraformand 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