Network Engineer

Uni Systems

Network Engineer at Uni Systems administering enterprise IP network infrastructure and providing 2nd line support while identifying network improvements. Hybrid role based in Warsaw, Poland.

Posted 7/14/2026full-timeWarsaw • 🇵🇱 PolandMid-LevelSeniorWebsite

Core Competencies

Role fit

Core Competencies

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Demonstrates expertise in administering and troubleshooting enterprise IP network infrastructure, with a strong focus on optimizing network performance and maintaining technical documentation. Proficient in managing network devices and providing second-line support in large enterprise environments.

Highest-signal resume keywords

Cisco CCNA CertificationTCP/IP KnowledgeHands-On Experience With Cisco Catalyst And Nexus SwitchesExperience With Palo Alto Networks FirewallsAdvanced English Communication Skills

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills

Network AdministrationIP RoutingEthernet SwitchingDNSDHCPNTPWi-Fi (802.1X/EAP)IPsec ConfigurationTroubleshootingNetwork Optimization

Soft Skills

Analytical SkillsTroubleshooting SkillsCommunication Skills

Tools & Technologies

Cisco Catalyst SwitchesCisco Nexus SwitchesPalo Alto Networks FirewallsInfoblox DDISecunet SINAbox

Certifications & Qualifications

Cisco CCNA Certification

Industry Keywords

Enterprise Network InfrastructureNetwork DevicesOperational ProceduresNetwork ChangesLarge Enterprise Environments

Tech Stack

Tools & technologies

DNSFirewallsLinuxSwitchingTCP/IP

About the role

Key responsibilities & impact

Administer, monitor, and troubleshoot enterprise IP network infrastructure.
Manage structured cabling and perform physical and logical network changes, including installation, removal, and configuration of network devices.
Provide 2nd line support for network and infrastructure services.
Maintain technical documentation and operational procedures.
Identify and recommend improvements, upgrades, and optimizations to the network infrastructure.

Requirements

What you’ll need

Bachelor's degree in IT or a related field and minimum 5 years of network professional experience.
Cisco CCNA certification or an internationally recognized equivalent.
Strong knowledge of TCP/IP, IP routing, Ethernet switching, DNS, DHCP, NTP, Wi-Fi (802.1X/EAP), SSL/TLS, PKI, and X.509 certificates.
Hands-on experience with Cisco Catalyst and Nexus switches.
Hands-on experience with Palo Alto Networks firewalls and Panorama.
Experience with Infoblox DDI administration.
Experience configuring and troubleshooting IPsec, IKE, and DMVPN.
Experience managing Secunet SINAbox encryptors.
Experience administering large enterprise network environments.
Good knowledge of Windows and Linux network configuration.
Experience with stateful and stateless traffic filtering.
Excellent analytical, troubleshooting, and communication skills.
Willingness to travel within Europe (up to 15 trips per year).
Valid Category B driving licence.
Advanced English (C1) communication skills (written and spoken).

Benefits

Comp & perks

At Uni Systems, we are providing equal employment opportunities and banning any form of discrimination on grounds of gender, religion, race, color, nationality, disability, social class, political beliefs, age, marital status, sexual orientation or any other characteristics. Take a look at our Diversity, Equality & Inclusion Policy for more information.