09/07/2026 updated
DK
100 % available
Senior DevOps / Platform Engineer | GitLab CI/CD, Kubernetes, GitOps | CKA CKAD CKS | DE EN GR
Athens, Greece
Worldwide
Industrial Informatics Engineering, Piraeus University of Applied SciencesAbout me
Twelve years in infrastructure, five of them Kubernetes-native. I own delivery platforms end to end and I can explain them to people who do not speak engineer. Three languages fluently, means I am the one sent in when the vendor call goes sideways. Based in Greece, happy to relocate.
Kubernetes SecurityConfiguration ManagementLinuxLinux AdministrationNagiosAnsibleCloud Platform SystemIstioBackendGitLabGitGitlab-ciGit FlowKubernetesDeployment Automation
CI/CD & GitLab
Expertise in GitLab CI/CD with self-managed pipelines and reusable templates, GitLab Runner with Kubernetes executor, as well as Bamboo and Jenkins. Design and ownership of reusable CI pipelines that reduced deployment cycle times from weeks to under one hour.
Kubernetes & GitOps Orchestration
Deep hands-on experience with Kubernetes, Helm, Flux CD, Kustomize, and Istio. Sole ownership of network-function deployment automation across large-scale European Kubernetes clusters, including GitOps blueprint design for 5G core workload delivery.
Containers & Security
Proficiency in Docker, container image scanning, container registries, JFrog Artifactory, RBAC, network policies, secret management, and OSCP-level penetration testing. Introduction of container vulnerability scanning as a blocking security gate in shared build pipelines.
Configuration Management
Practical experience with Ansible and shell-based automation for managing large server estates and infrastructure configuration at scale.
Infrastructure & Linux Administration
Production-grade Linux systems administration across environments with 300+ servers, VMware ESXi clusters, MySQL, and Nagios/NRPE monitoring. Management of physical and virtual infrastructure in enterprise environments.
Terraform & Infrastructure as Code
Automated GitLab configuration auditing via Terraform, implementing scheduled checks that flag live settings drifting from approved baselines, covering branch protection, access rights, and credential expiry.
Monitoring & Automation
Authoring and maintenance of hundreds of automated monitoring jobs using Nagios/NRPE in bash, Ruby, and Python across enterprise environments.
Full-Stack Mobile App Development
Conception, design, and solo development of a full-stack mobile application covering product design, Bluetooth proximity detection, cloud backend, and App Store release.
Experience
Professional experience10+ years
Freelancer since2026
Languages
GermanFluentEnglishFluentGreekNative speaker
Project history
Sole owner of network-function deployment automation across DTs European Kubernetes clusters, designing the GitOps blueprint for 5G core workload delivery. Designed reusable GitLab CI pipelines, introduced container vulnerability scanning, built GitOps deploy loops, automated GitLab configuration auditing via Terraform, and authored formal vendor delivery specifications. Selected for the company Level Up leadership program.
Entrusted by the Berlin CEO/CTO to establish and manage the company's Greek engineering department. Administered 500+ Linux/Windows servers and complex production infrastructure. Built self-managed CI/CD tooling with Docker images for Bamboo build agents and maintained hundreds of automated monitoring jobs using Nagios/NRPE.
Linux systems administration for one of Greece's largest online travel platforms, managing a 300+ server estate with SaltStack configuration management and nginx.