(Junior/Regular) Network and Firewall Administrator (f/m)

Phoenix Contact; Województwo wielkopolskie; On-site; PLN 120,000 - 180,000; Full time

Job summary

Phoenix Contact is seeking a networking specialist to join our international IT team. You will diagnose WAN/VPN incidents, design LAN/WLAN and routing patterns, administer firewalls and NAC, and perform incident and problem management. You will coordinate upgrades, run failover tests and document designs and handover packages.

The role requires clear English communication, independent problem solving, and willingness to travel where needed across international sites.

Qualifications

• Our requirements include relevant IT education or technical training; experience in networking, firewall administration, or similar infrastructure roles; strong TCP/IP, routing, switching, VLANs, WLAN, VPN, DNS and DHCP knowledge; practical experience with enterprise firewalls and NAC; familiarity with monitoring and incident, problem and change management; ability to craft technical designs and rollout/rollback plans; independent, methodical problem solving with good risk judgment; clear technical English communication across teams and international stakeholders.

Responsibilities

• WAN operations: Diagnose and resolve WAN / VPN links incidents; configure approved routing and WAN solutions; coordinate service provider troubleshooting
• LAN, WLAN and routing: Design and implement standard LAN, WLAN, switching, routing and redundancy solutions within approved patterns, while managing firmware, configuration baselines and production changes
• Firewall, network security and NAC: Administer firewall rules, VPNs and NAC policies; resolve authentication, segmentation and access-control issues; support vulnerability remediation and configuration hardening
• Incident and problem management: Resolve incidents, perform structured root-cause analysis and implement approved preventive actions
• Lifecycle, capacity and resilience: Maintain lifecycle, capacity and obsolescence information; coordinate upgrades, replacements, failover tests and resilience improvements; provide technical input to budget and renewal planning
• Projects, documentation and knowledge sharing: Deliver technical work packages, prepare designs, diagrams, implementation and handover documentation

Job description

• WAN operations: Diagnose and resolve WAN / VPN links incidents; configure approved routing and WAN solutions; coordinate service provider troubleshooting
• LAN, WLAN and routing: Design and implement standard LAN, WLAN, switching, routing and redundancy solutions within approved patterns, while managing firmware, configuration baselines and production changes
• Firewall, network security and NAC: Administer firewall rules, VPNs and NAC policies; resolve authentication, segmentation and access-control issues; support vulnerability remediation and configuration hardening
• Incident and problem management: Resolve incidents, perform structured root-cause analysis and implement approved preventive actions
• Lifecycle, capacity and resilience: Maintain lifecycle, capacity and obsolescence information; coordinate upgrades, replacements, failover tests and resilience improvements; provide technical input to budget and renewal planning
• Projects, documentation and knowledge sharing: Deliver technical work packages, prepare designs, diagrams, implementation and handover documentation

Your responsibilities

• WAN operations: Diagnose and resolve WAN / VPN links incidents; configure approved routing and WAN solutions; coordinate service provider troubleshooting
• LAN, WLAN and routing: Design and implement standard LAN, WLAN, switching, routing and redundancy solutions within approved patterns, while managing firmware, configuration baselines and production changes
• Firewall, network security and NAC: Administer firewall rules, VPNs and NAC policies; resolve authentication, segmentation and access-control issues; support vulnerability remediation and configuration hardening
• Incident and problem management: Resolve incidents, perform structured root-cause analysis and implement approved preventive actions
• Lifecycle, capacity and resilience: Maintain lifecycle, capacity and obsolescence information; coordinate upgrades, replacements, failover tests and resilience improvements; provide technical input to budget and renewal planning
• Projects, documentation and knowledge sharing: Deliver technical work packages, prepare designs, diagrams, implementation and handover documentation

Our requirements

• Relevant IT education, technical training or equivalent practical expertise
• Experience in networking, firewall administration or a related infrastructure role
• Good working knowledge of TCP/IP, routing, switching, VLANs, WLAN, VPN, DNS and DHCP
• Practical experience administering enterprise firewalls and network access control solutions
• Experience with monitoring and with incident, problem and change management processes
• Ability to create technical designs, implementation plans and rollback plans within established standards
• Independent, methodical problem-solving skills and sound judgement regarding escalation, risk and business impact
• Clear technical communication in English and the ability to work across teams, suppliers and international stakeholders

An additional advantage will be

• Vendor technologies: Experience with Fortinet, Aruba, Cisco or comparable enterprise network and security platforms
• Certifications: Associate- or professional-level network/security vendor certification, or ITIL certification
• Automation: Practical scripting or network automation skills
• Operational environment: Experience supporting international organisations or production locations, plus a driving licence and willingness to travel when required