Michal Jirka

IT Consultant & DevOps Specialist with over 20 years of experience – from Linux administration through WebOps and DevOps to leading infrastructure and security teams.

I spent five years as Head of ICT & Security at Phonexia. Since 2022 I've worked as an independent consultant under the InfraCore brand.

I help companies design and implement robust infrastructure, automate processes, migrate to the cloud, and build effective DevOps teams.

Services

Complete Infrastructure Management
Complete management of company infrastructure – servers, networks, and endpoints. Virtualization (Proxmox, VMware, Apache CloudStack, KVM), Active Directory, Azure AD, monitoring (Checkmk, Grafana). I can also help individuals set up their home devices.
Cloud & DevOps
Infrastructure as Code (Terraform, Ansible, Packer), Kubernetes, Docker, CI/CD pipelines (GitLab, GitHub). AWS, Azure, Exoscale, and DigitalOcean cloud platforms.
Databases & Storage
Database cluster management – MariaDB/Galera, MongoDB, PostgreSQL. Storage solutions: SUSE Enterprise Storage (CEPH).
Security & IT Team Leadership
SIEM implementation (Wazuh), firewall configuration, security audits. Experience as Head of ICT & Security.
Partner & Supplier Network
I work with a network of trusted suppliers – server hosting, security auditing, applications hosted in the CZ/EU, and infrastructure design and management. I can connect you with partners who help your business grow further.

Experience

2022 — present

Infrastructure & DevOps Consultant | InfraCore (freelance)

Infrastructure design and automation, CI/CD, Terraform, Kubernetes, and cloud migration for business clients.

2017 — 2022

Head of ICT & Security | Phonexia

Led the infrastructure and security team. On-premise and cloud infrastructure (Azure, AWS, Exoscale), CloudStack virtualization, CEPH storage, Kubernetes, Microsoft 365, and Active Directory.

2015 — 2017

DevOps Engineer | SnapShot GmbH

Infrastructure on Azure and AWS, provisioning with Chef, MariaDB/Galera and PostgreSQL clusters, ELK stack, Zabbix, and Docker/Kubernetes.

2012 — 2015

Web Operations Engineer | SolarWinds

Deployment and server-provisioning automation, HA solutions, and monitoring of web services.

2010 — 2011

Application Servers Administrator | Home Credit International

RedHat Linux, Oracle WebLogic and Service Bus, F5 BIG-IP, HP Serviceguard.

2007 — 2010

Linux System Administrator | Master Internet

Managed Linux servers (RHEL, CentOS, Debian), web and mail services, HP blade cluster with EVA storage, and virtualization.

Skills

>Linux / Server Administration

Servers

Linux and Windows server administration, networks, and endpoints

years of experience

>Kubernetes

Orchestration

Docker, Helm, containerization, cluster orchestration

years of experience

>Terraform / Ansible

IaC

Infrastructure as Code, Packer, automation, CI/CD (GitLab, GitHub)

years of experience

>AWS / Azure

Cloud

AWS, Azure, Exoscale, DigitalOcean – migration and management

years of experience

>Proxmox / VMware

Virtualization

Proxmox, VMware, Apache CloudStack, KVM

years of experience

>Wazuh / SIEM

Security

SIEM, firewall, security audits, monitoring

years of experience

>PostgreSQL / MariaDB

Databases

Database clusters, Galera, MongoDB, CEPH

years of experience

Contact

Email michal@infracore.cz
Phone +420 608 556 186
GitHub github.com/jirkami
LinkedIn linkedin.com/in/jirkami
Na volné noze navolnenoze.cz/prezentace/michal-jirka