IT Systems & Security Administrator

Our requirements

• Proven experience in administering and maintaining enterprise network and systems infrastructure.
• Hands-on experience with the ELK Stack (Elasticsearch, Logstash, Kibana) for infrastructure monitoring, log analysis, and incident investigation.
• Strong practical knowledge of Palo Alto Networks firewalls, including HA clusters, security policy management, software upgrades, VPN administration, and multi-ISP environments.
• Experience administering Windows Server, Hyper-V, Active Directory, and Microsoft Exchange Server environments.
• Knowledge of integrating on-premises infrastructure with Microsoft Cloud services.
• Practical experience with SAML-based authentication and Microsoft Entra ID integrations.
• Ability to administer and perform basic configuration of network switches.
• Experience conducting vulnerability assessments and analyzing results using Nessus.
• Strong troubleshooting and diagnostic skills related to network communications, authentication, and hybrid environments.
• Ability to analyze system and network logs to identify, investigate, and resolve infrastructure and security issues.
• Experience collaborating with technical teams and supporting users in complex IT environments.
• Professional proficiency in English.

Optional

• Palo Alto Networks certifications (PCNSA, PCNSE).
• Microsoft certifications related to Windows Server, Azure, or Microsoft Entra ID.
• Experience working in hybrid on-premises and cloud environments.
• Knowledge of cybersecurity best practices and vulnerability management processes.
• Experience with enterprise security monitoring and incident response activities.

Your responsibilities

• Monitor network and system infrastructure using the ELK Stack (Elasticsearch, Logstash, Kibana).
• Maintain and develop security environments based on Palo Alto Networks firewalls.
• Manage VPN configurations and collaborate with identity management administrators supporting Microsoft Entra ID.
• Administer Windows Server environments, Hyper-V, Active Directory, and Microsoft Exchange Server.
• Oversee and support integrations between on-premises infrastructure and Microsoft Cloud services.
• Perform regular vulnerability assessments using Nessus and prepare security reports, findings, and remediation recommendations.
• Provide technical support to users and IT teams regarding access to services, network resources, and business applications.
• Investigate incidents, troubleshoot connectivity and communication issues, and recommend corrective actions.
• Collaborate with customer infrastructure teams during system changes, upgrades, and deployments.
• Support network equipment administration, including basic switch configuration and maintenance.
• Analyze system and network logs to identify performance, security, and operational issues.

About the project

What we offer

• Participation in interesting and demanding projects.
• Flexible working hours.
• A great, non-corporate atmosphere.
• Possibility to work remote or hybrid (2 days per week from the office).
• Opportunities for development and promotion.
• Attractive package of benefits.

Benefits

• sharing the costs of sports activities
• private medical care
• sharing the costs of foreign language classes
• sharing the costs of professional training & courses
• life insurance
• flexible working time
• fruits
• integration events
• no dress code
• extra social benefits

Transition Technologies MS S.A.