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Stefanos Stathatos · DevOps Engineer

Automate_
Deploy_
Observe_

DevOps Engineer with 8 years of experience specializing in automation, cloud services, and CI/CD pipelines. Proficient in Docker, Kubernetes, AWS, and Jenkins, with a proven track record of improving operational efficiency and collaboration. Experienced in managing production environments and enhancing deployment processes.

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Experience

  1. DevOps Engineer · Nespresso via Amaris

    Nov 2024 – Present · Remote
    • Deployed and maintained Jenkins on Kubernetes, leveraging dynamic pod-based agents to provide scalable CI/CD infrastructure capable of supporting dozens of pipelines running concurrently across multiple engineering teams.
    • Designed and implemented Jenkins pipelines to automate complex database operations and operational workflows, standardizing CI/CD processes to improve efficiency and reduce human error across production activities.
    • Deployed and maintained Grafana monitoring stacks on Kubernetes (OCI), integrating Prometheus and database exporters to provide centralized observability, production dashboards, alerting, and metrics visualization.
    • Developed and maintained Ansible playbooks for the database squad and contributed Infrastructure as Code (IaC) automation to the organization’s central Ansible Automation Platform (AAP) code repository.

  2. DevOps Engineer · Earth Science Analytics

    Nov 2019 – Nov 2024 · Athens
    • Designed and automated deployment processes using CI/CD pipelines with Jenkins, supporting an internal team of developers and significantly boosting productivity.
    • Orchestrated deployment and management of a SaaS web application designed for the oil and gas industry with Kubernetes in test, QA and production environments.
    • Deployed and managed a Django application with a MySQL database, supporting machine learning computations, in both Azure Kubernetes Service (AKS) and Amazon Elastic Kubernetes Service (EKS), ensuring high availability and scalability.
    • Developed Python-based automation leveraging AWS, Azure, and GCP APIs to provision and manage cloud infrastructure for machine learning workflows and deployments.
    • Provisioned infrastructure deployment in both AWS and Azure environments using Terraform, improving efficiency and consistency.
    • Reduced infrastructure costs by 30% using Infracost for cost analysis and optimization.
    • Implemented cloud security best practices by incorporating private subnets, bastion hosts, and security groups.
    • Used ArgoCD to implement GitOps by synchronizing Git repositories with Kubernetes clusters, ensuring declarative and version-controlled deployments.
    • Monitored and maintained web SaaS application performance using Kubernetes-native tools and Prometheus/Grafana for observability.

  3. Backend Developer · Earth Science Analytics

    Nov 2018 – Nov 2019 · Athens
    • Designed and implemented containerization strategy using Docker.
    • Developed unit tests to validate individual components and functions within RESTful API and database.

Education

Technical University of Crete

BSc-MSc, Electrical and Computer Engineering

Skills

Orchestrators
Kubernetes
Cloud
AWSAzureGCP
CI/CD
JenkinsArgoCDGitHub Actions
Containerization
Docker
IaC
TerraformAnsible
Monitoring
GrafanaPrometheusELK
Languages
PythonBash
Databases
MySQLPostgreSQL
OS & VCS
LinuxGit

Certifications

Languages

English (Fluent) · German (Basic)

Projects

elcourtside

live

A fan-made Euroleague statistics site: standings, boxscores and PIR leaderboards, plus play-by-play-derived indexes for clutch performance, scoring runs and blown leads. A FastAPI backend and ingest ETL behind an Astro/React frontend, running on the cluster below and deployed by the same ArgoCD app-of-apps.

FastAPIAstroReactKubernetesHelmArgoCD

This platform

live

The site you are reading runs on infrastructure built from scratch: two Hetzner servers imported into Terraform, a 2-node k3s cluster joined over a private network, ingress-nginx with Let’s Encrypt TLS, and every workload deployed declaratively through ArgoCD from a single Git repository.

Terraformk3sArgoCDHelmGitHub ActionsCloudflare

Live infrastructure dashboard

live

A public, read-only Grafana dashboard of this very cluster — request rate, latency, per-node CPU and memory, pod restarts. Watch it live below.

GrafanaPrometheuskube-prometheus-stack

Live Infrastructure

Real metrics from the cluster serving this page — scraped by Prometheus, rendered by Grafana, deployed by ArgoCD. Open the full dashboard.