Architect & Consultant & IT Security Consultant & Linux Administrator & Network Administrator

Zkušený IT profesionál s odbornými znalostmi v oblasti systémů Unix/Linux, řešení OpenSource a síťových/bezpečnostních technologií. V současné době provozuje samostatnou firmu a řídí projekty jako Intrabook a Document Management System. Zkušenosti s technologiemi jako Apache, Postfix, Dovecot, OwnCloud/NextCloud, OnlyOffice, Collabora Online, SeedDMS, BitWarden, FreeRadius, Zabbix a další. Má titul z Fakulty elektrotechniky a informatiky. Znalost angličtiny, středně pokročilá znalost němčiny a ruštiny. Rozsáhlé předchozí zkušenosti zahrnují role pokrývající oblasti, jako je řízení projektů, vývoj produktů, IT řešení a síťová bezpečnost.

2015 - Present Freelance Business Owner

• Currently involved in minimal projects, allowing engagement in additional endeavors.

Current Projects:

Intrabook: Information and Communication Center

• Operations and development of a customized solution based on WordPress/PHP.
• Integration and customization of multiple plugin modules, utilizing Bash and PHP scripts.
• Cloud-based system running on Debian Linux server with technologies such as Apache, Postfix, Dovecot, PHP, MySQL.

Document Management System and Private Cloud

• Maintenance and operation of Debian Linux server with open-source applications (SeedDMS, NextCloud, OnlyOffice, Collabora Online).
• Private infrastructure deployment for customer collaboration.

Cloud Infrastructure and Security Solutions

• Platform for testing, development, and demonstration purposes.
• Utilization of technologies like OPNSense firewall, SoftEther VPN, NextCloud, Bitwarden password manager, and Zabbix monitoring.
• Implementation of secure communication using SoftEther and OpenVPN.

Professional Expertise:

• Proficient in Unix/Linux systems (Debian, Ubuntu, OpenWrt, FreeBSD) - installation, configuration, administration, troubleshooting, maintenance.
• Integration and administration of open-source solutions: Apache, Postfix, Dovecot, OwnCloud/NextCloud, OnlyOffice, Collabora Online, SeedDMS, BitWarden, FreeRadius, Zabbix, etc.
• Networking, firewalling, VPN, and IT/Cybersecurity solutions, with a preference for open-source technologies like OpenVPN, SoftEther VPN, OPNSense firewall.
• Internal and external security testing of IT infrastructure and web applications, including penetration testing using Kali Linux tools (Metasploit, Nmap, Wireshark, etc.).
• WordPress development, plugin integration, customization of PHP, HTML, CSS, and JavaScript code, with a focus on web security.
• Past experience with networking/security technologies from Cisco, Motorola, Symantec, and others.

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Previous Work Experience

2014-2015: Bratislava

• Internal project management for "Customer Lifecycle."
• Innovation and development of products for the residential segment.

1995-2014: Bratislava

• IT solutions, LAN and WAN networking, network security.
• Experience with various technologies: Windows, Novell, Linux, X.25, Frame Relay, ADSL, Cisco, Motorola, Symantec, Memotec, Juniper.
• Co-led the company, focusing on technical aspects.
• Technical realization of solutions, development, testing, project management, customer care, and product management