09/30/2026 updated
100 % available
Senior DevOps & Infrastructure Engineer
Katowice, Poland
Only remote
B.S. Computer Science, Universidade UNG (2012)About me
Senior DevOps & Infrastructure Engineer with 17+ years’ experience in enterprise Linux, automation, hybrid cloud, and high-availability platforms. RHCE/RHCSA certified, with expertise in RHEL, Ansible, Kubernetes, Docker, Azure, GCP, NGINX, and enterprise middleware.
JythonPython (Programming Language)Red Hat Certified EngineerAnsible
Infrastructure as Code & Automation
Development of idempotent Red Hat Ansible (AAP) workflows, Terraform provisioning, and GitOps strategies to automate enterprise-wide infrastructure, including YAML workflows and reusable Ansible roles.
Cloud & Container Technologies
Design and implementation of secure hybrid cloud environments across Microsoft Azure, GCP, and private cloud architectures (Proxmox VE/ESXi), as well as containerization of monolithic workloads using Docker and Kubernetes.
Linux System Administration & SELinux
Administration and hardening of RHEL, AIX, Ubuntu, and SLES environments, including SELinux policy analysis, context restoration, and security hardening for business-critical banking applications.
NGINX Reverse Proxy & Load Balancing
Configuration of NGINX reverse proxies and NGINX load balancers for highly available banking services, SSL/TLS lifecycle management, and zero-downtime releases for .NET and Java applications.
Middleware Administration
Administration and operation of WebSphere, JBoss, Tomcat, IIS, and IBM HTTP Server (IHS) for global enterprise applications, including high-availability clustering and load balancing.
Databases & PL/SQL Optimization
Optimization of DB2/Oracle processing performance through PL/SQL tuning, as well as design of REST/SOAP API integrations to streamline global asset management.
CI/CD & DevOps Toolchain
Use of Ansible, CI/CD pipelines (GitHub Actions, Jenkins), and GitOps practices to automate software releases and infrastructure deployments.
Virtualization
Administration and management of Proxmox VE and VMware ESXi for private cloud infrastructures and highly available storage environments using TrueNAS and ZFS.
Scripting & Programming
Development of automation solutions using Python, Java (J2EE), PL/SQL, Bash, PowerShell, and Jython for infrastructure and middleware operations.
Experience
Professional experience0 - 5 years
Freelancer since2026
Languages
EnglishFluentPortugueseNative speaker
Project history
Entwicklung idempotenter Red Hat Ansible (AAP) Workflows und Terraform-Provisioning. Konzeption sicherer Hybrid-Cloud-Umgebungen auf Microsoft Azure, GCP und Proxmox VE/ESXi. Containerisierung monolithischer Workloads mit Docker und Kubernetes. Management hochverfuegbarer Applikations-Routings und Reverse Proxies (NGINX, WebSphere, IIS, JBoss, Tomcat) sowie zentralisiertes SSL/TLS-Lifecycle-Management.
Architektur unternehmensweiter Automatisierung mit Red Hat Ansible (AAP) und idempotenten YAML-Workflows. Etablierung einer GitOps-Strategie durch Migration von Infrastrukturkonfigurationen zu Git mit automatisierter Synchronisation via ServiceNow CMDB. Absicherung von RHEL-Umgebungen fuer Hybrid-Cloud-Deployments auf Azure und GCP. Orchestrierung von Zero-Downtime-Releases fuer .NET- und Java-Applikationen durch NGINX/IIS Reverse Proxy und SSL/TLS-Management. SELinux-Administration und Troubleshooting.
Beschleunigung der Software-Release-Velocity um 60% durch Containerisierung von Legacy-Middleware (WebSphere/WebLogic) mit Docker Multi-Stage Builds. Aufrechterhaltung von 99.9% Uptime fuer globale Enterprise-Services (RHEL, AIX, Windows) durch automatisiertes Performance-Tuning. Aufbau hochverfuegbarer Cluster ueber WebSphere, Tomcat und JBoss. Optimierung von DB2/Oracle-Verarbeitungsgeschwindigkeiten um 90% via PL/SQL-Tuning. SELinux-Administration und Konfiguration von NGINX+ Reverse Proxy und NGINX Load Balancer fuer Banking-Services.