Antonín Ečer, DiS. Senior Infrastructure Specialist

Senior Infrastructure Specialist - OSSS / Network Security

• Ensuring secure and stable banking operations in compliance with strict governance and audit standards.
• Integrating and monitoring 720+ critical wireless components into the central monitoring system.
• Setting up efficient processes for managing and developing monitoring infrastructures.

• Designing and implementing high-availability monitoring (Zabbix HA) built on Rocky Linux.
• Automating deployment and management of monitoring agents and configurations using Ansible.
• Integrating and monitoring critical network components (720+ components) and managing alert rules.
• Creating audit-ready operational standards and preparing reporting deliverables.

Senior Linux / Infrastructure Engineer

• Co-responsible for operations, automation, and compliance of a fleet of 7,000+ Linux servers.
• Created the internal tool PatchMonitor for patch tracking, DR validation, and management reporting.
• Significantly shortened patch cycles and reduced operational risks by introducing automated orchestrations.

• Managing and patching 7,000+ Linux servers (RHEL, Oracle Linux, CentOS, Ubuntu, Debian).
• Orchestrating patch compliance and repository lifecycles using Ansible, AWX, Foreman, and Katello.
• Creating and optimizing dynamic inventories in Ansible AWX for scalable task execution.
• Developing the PatchMonitor system (PHP, Python, SQL) - patch status visualization, DR check logging, management reporting.
• Hardening operating systems, preparing compliance audit materials, and implementing remediation steps.

Infrastructure Transformation Consultant

• Crisis management and infrastructure transformation for rapid stabilization of critical services.
• Virtualization consolidation and unification of IP address space across datacenters.
• Introducing standardized operational processes and centralized access control.

• Audit and redesign of virtualization clusters built on Proxmox VE.
• Implementing FreeIPA for centralized identity and access management (LDAP).
• Restructuring IP address space across multiple geographically separated datacenters.
• Replacing unmanaged and unstable legacy VPN architecture with secure, segmented connectivity.

IT Systems Specialist / Infrastructure Architect (Acting LISO & Deputy CISO)

• Design and management of IT infrastructure supporting safety-critical software development for VW Group.
• Responsible for information security as local LISO and Deputy CISO.
• Implementing access control standards, VLAN segmentation, and audit trail enforcement.

• Managing a heterogeneous environment of Linux (RHEL, CentOS) and Windows Server.
• Virtualization on VMware ESXi and Microsoft Hyper-V platforms.
• Configuring Cisco and FortiGate network devices, VLAN segmentation, LACP, and trunking.
• Backup and disaster recovery using Veeam Backup & Replication.
• Managing and integrating developer tools (GitLab, Jira, Confluence) and AD/DNS directory services.
• Implementing security audit controls and system hardening according to VW Group standards.

IT Manager / Regional IT Manager / IT Specialist

• Managing IT infrastructure for headquarters and 20+ hotel locations in the Czech Republic.
• Leading the internal helpdesk and coordinating regional IT administrators.
• Vendor management, SLA negotiations, and efficient IT budget control.

• Full management of servers and networks for 20+ geographically separated hotel locations.
• Virtualization and consolidation of physical hardware on the VMware ESXi platform.
• Integration and maintenance of property management systems (Epitome / Opera PMS) and interfaces.
• Implementing backup and disaster recovery standards across branches.
• Managing and executing hotel system migrations and deployments in the CEE region.

IT Specialist / Network Administrator / Systems Technician

• Gaining a broad foundation in IT support, network administration, and database maintenance.
• Technical support for national GSM network rollouts and monitoring logistics systems.
• Positions at Ericsson s.r.o., AAA Auto a.s., and Czech Post.

• Network administration on Novell NetWare and early Windows Server platforms.
• Supporting the GSM 1800 network rollout in the Czech Republic for Ericsson.
• Maintenance of automated mail-sorting technologies and SQL databases at Czech Post.
• Developing internal utilities and scripts (Pascal, PHP, Bash) to automate recurring tasks.