CTO, Co-Owner - Foresight Cyber, s.r.o. (Foresight Cyber)
Duration: 2018 — 2023
Summary:- Foresight Cyber, s
- r
- o
- is a company based in Ostrava, Czech Republic, focused on cybersecurity solutions and services
- The company aims to provide advanced cyber defense and security management for its clients
Responsibilities:- Leading the company’s technology strategy and development.
- Overseeing cybersecurity projects and operations.
- Driving innovation and implementation of security solutions.
- Managing technical teams and coordinating with stakeholders.
Board of advisors, Developer - Lethean Foundation (Lethean Foundation)
Duration: 2018 — 2020
Summary: Lethean Foundation is an organization focused on privacy and security technologies, including the development of LetheanVPN, a privacy-focused VPN service based on blockchain technology.
Responsibilities:- Advising on project development and strategic direction.
- Contributing to software development, particularly in privacy and security tools.
- Supporting open-source initiatives related to LetheanVPN.
Technologies: Blockchain, VPN, Python, C
Head Of Operations, Co-Owner - Jirasek Security Operations, s.r.o. (Jirasek Security Operations)
Duration: 2017 — 2018
Summary:- Jirasek Security Operations, s
- r
- o
- is a security operations company based in Kavina, Czech Republic, providing cybersecurity services and network security management
Responsibilities:- Managing daily security operations and company activities.
- Overseeing network security design and implementation.
- Leading operational teams and coordinating security projects.
Technologies: Network security, Cisco, Juniper, PaloAlto, FortiNet
Point of Presence administrator - CESNET (CESNET PoP Administration)
Duration: 2000 — 2016
Summary:- CESNET is the Czech national research and education network operator
- The Point of Presence (PoP) administration project involved managing network access points to ensure reliable and secure connectivity for research and education institutions
Responsibilities:- Administering and maintaining network Points of Presence.
- Ensuring network security and availability.
- Implementing network management and monitoring solutions.
Technologies: Linux, FreeBSD, Cisco, Juniper, pfSense, openWRT
Researcher - CESNET (CESNET Research Projects)
Duration: 2000 — 2016
Summary: Conducted research in network management, security, and automation within CESNET, contributing to advancements in national research and education network technologies.
Responsibilities:- Researching network design and security methodologies.
- Developing automation tools for network management.
- Collaborating on open-source projects related to network security.
Technologies: Perl, Python, C, XML, JSON, YAML, REST, MySQL, PostgreSQL, ElasticSearch
Organization committee - Silesian University (Silesian University Events)
Duration: 2011 — 2022
Summary: Participated in organizing academic and technical events at Silesian University in Karvina, supporting knowledge sharing and community building.
Responsibilities:- Planning and coordinating university events and conferences.
- Managing logistics and participant communications.
Network administrator - Silesian University in Opava (Silesian University Network Administration)
Duration: 1998 — 2018
Summary: Managed and maintained the university’s network infrastructure to ensure reliable and secure connectivity for academic and administrative purposes.
Responsibilities:- Administering network hardware and software.
- Implementing network security measures.
- Supporting users and troubleshooting network issues.
Technologies: Linux, Windows, Cisco, pfSense, openWRT
Teacher - Silesian University in Opava (Teaching at Silesian University in Opava)
Duration: 1998 — 2018
Summary: Provided instruction and mentorship in network management, security, and IT-related subjects to university students.
Responsibilities:- Delivering lectures and practical labs.
- Developing course materials and curricula.
- Guiding student projects and research.
Upstaffer since June, 2026
