Marek Sadlowski

I am a DevOps engineer with extensive experience designing, automating, and operating infrastructure across cloud and on-premises environments. I have worked on orchestration, CI/CD, and systems administration at companies including Kellton and Nokia, and I run strong automation practices using tools such as Ansible, Terraform, and Docker.

My background includes Windows and Linux administration, scripting in Bash and Python, and managing monitoring and logging stacks like Zabbix and ELK/OpenSearch. I have delivered infrastructure-as-code solutions and pipeline automation using GitHub Actions, Jenkins, and Terraform to accelerate deployments and improve reliability.

Earlier in my career I ran my own IT services business providing hardware advice, network design, and system administration, which sharpened my customer-facing and problem-solving skills. I also have experience with virtualization (Xen, Hyper-V), backups (Bacula, custom solutions), and directory and network services (AD, LDAP, DNS, DHCP).

I value practical, observable improvements: stable CI/CD pipelines, repeatable infrastructure, and measurable monitoring that reduces outages. I bring a pragmatic, hands-on approach and fluency in Polish and English to cross-functional teams aiming to scale reliable systems.