Linux Admin | Automation Engineer | Hobby Game Dev

Robert Mašír

I'm a dedicated Linux Engineer with expertise in automation, DevOps practices, and a passion for game development. Currently optimizing infrastructure at Commerzbank AG, I leverage technologies like Ansible, Python, and cloud solutions to build efficient, scalable systems.

Get in Touch Explore My Skills

Technical Skills

Linux Administration

Expert-level Linux systems management with focus on performance optimization and security.

  • System Deployment & Configuration
  • Server Optimization
  • LAMP Stack Management
  • Security Hardening
  • Networking & Troubleshooting

Automation & DevOps

Building efficient workflows and infrastructure-as-code solutions.

  • Ansible & SaltStack
  • Python & Bash Scripting
  • CI/CD Pipelines
  • Cloud Infrastructure (AWS)
  • Monitoring (Zabbix, Icinga2, Grafana)

Containerization & Virtualization

Creating scalable and portable application environments.

  • Docker & Container Orchestration
  • KVM Virtualization
  • LXC Containers
  • Kubernetes
  • Resource Optimization

Game Development

Hobby projects focused on creating unique gaming experiences.

  • Game Engines
  • Game
  • Game Mechanics
  • Level Design
  • Audio Implementation

Cloud Technologies

Designing and implementing scalable cloud solutions.

  • Multi-Cloud Architectures
  • Hybrid Cloud Models
  • Cloud Migration
  • AWS Services
  • Infrastructure Optimization

Security & Networking

Implementing robust security practices and network configurations.

  • Network Security
  • Firewall Configuration
  • SSL/TLS Implementation
  • Security Auditing
  • Advanced Linux Networking

Certifications & Courses

Kubernetes

DataScript s.r.o. | Prague, 2025

Comprehensive training on Kubernetes deployment, management, and orchestration.

Advanced Networking in Linux

akademie.nic.cz | Prague, 2018

In-depth course covering complex Linux networking concepts, configuration, and optimization.

Professional Experience

Linux Automation Engineer

Commerzbank AG | February 2025 - Present

Delivering Operating System as a Service (OSaaS) at scale for internal customers on a hybrid cloud model via Ansible on a multi-datacenter setup around the globe.

Linux Engineer

ACTIVE 24, s.r.o. | July 2022 - January 2025

Automated IT processes using SaltStack and Ansible, managed systems with Zabbix and Icinga2, and developed infrastructure through Python and Bash scripts. Worked with KVM virtualization, LXC, Docker, and LAMP servers.

Automation Engineer

COEX CZ s.r.o. | November 2023 - June 2024

Specialized in IT process automation and infrastructure optimization.

Coach

Czechitas | July 2023 - January 2024

Provided mentoring and technical guidance in IT education.

Linux System Administrator

Webglobe | October 2018 - June 2022

Managed complete Linux server infrastructure including datacenter operations.

Technical Specialist

Tieto | January 2016 - September 2018

Worked in a unit focused on e-Invoicing and system integrations with focus on application maintenance and support including on-call duty. Experienced with aXway products like Integrator, Sentinel, Gateway and API Gateway, and custom Tieto solutions. Familiar with HP-UX/Unix systems covering configuration, scripting and networking.

Operations Specialist

Telia Danmark (as Tieto employee) | September 2016 - January 2018

Technical specialist for Telia Denmark responsible for server maintenance, managing deployments and providing support for developers.

System Administrator & Security Analyst

webvalley.cz | July 2015 - August 2016

Managed Linux and Windows servers for project deployments. Tested projects for security vulnerabilities before client delivery. Responsibilities included system deployment and upgrades, developer support, server setup, security hardening, updates management, and working with Amazon Web Services.