IT Systems Engineer - Network Infrastructure

ista Technologies Poland is hiring for a role focused on enterprise network infrastructure across on-premises and cloud-connected environments.

• Several years of hands-on experience in network engineering or network infrastructure administration.
• Strong knowledge of enterprise networking technologies, including routing, switching, wireless networks, VPNs, and DNS/DHCP services.
• Experience with leading network vendors and technologies such as Cisco, Aruba, Fortinet, Palo Alto, Juniper, or similar.
• Solid understanding of network security principles, segmentation, firewalls, NAC, and secure remote access solutions.
• Experience with network monitoring and troubleshooting tools.
• Familiarity with cloud networking concepts and hybrid infrastructure environments.
• Strong analytical and problem-solving skills with a proactive and solution-oriented mindset.
• Ability to work independently while collaborating effectively within international teams.
• Very good communication skills in English.

Nice to have:

• Relevant certifications (e.g., CCNP, Aruba Certified Professional, JNCIP, NSE, PCNSE).
• Experience with Software Defined Networking (SDN), automation, or Infrastructure as Code.
• German language skills.

• Design, implement, and maintain enterprise network infrastructure, including LAN, WAN, WLAN, VPN, and network security solutions.
• Lead network modernization and optimization initiatives to improve performance, availability, and scalability.
• Configure, administer, and troubleshoot network devices such as routers, switches, wireless controllers, firewalls, and load balancers.
• Implement and maintain network monitoring, capacity management, and performance analysis solutions.
• Collaborate with Security, Cloud, and Infrastructure teams to ensure secure and reliable connectivity across all platforms.
• Analyze and resolve complex network incidents, identify root causes, and implement preventive measures.
• Create and maintain network architecture documentation, operational standards, and best practices.
• Support infrastructure projects, technology upgrades, and the introduction of new networking solutions.