Network Administrator

Job Title: Network & Database Administrator

Location: Gdansk, Poland - Hybrid: 2-3 Days to Office Every Week

Duration: 6 Months - Extendable

Employment Type: Contract B2B

Roles & Responsibilities:

We are looking for an experienced Network & Database Administrator to support and manage enterprise production network environments and mission-critical applications. You will be responsible for day-to-day operations, escalated incident handling, infrastructure upgrades, and continuous service improvement.

Key Responsibilities

• Manage and support enterprise production network environments (100+ users)
• Operate and maintain data center and branch office networks
• Handle L3/L4 escalated incidents and critical outages
• Participate in major changes, risk assessments, and migrations
• Design, upgrade, and migrate network infrastructure
• Create performance, capacity, and availability reports
• Maintain technical documentation and support transition activities
• Work with business stakeholders and contribute to service improvement initiatives

Required Skills & Experience

• Strong experience with Cisco Data Center & Enterprise Networking
• Hands-on expertise with Cisco Nexus and ACI (design, configuration, troubleshooting)
• In-depth knowledge of routing & switching (VLANs, STP, OSPF, BGP, EIGRP, VRF)
• Experience with L2/L3, QoS, EtherChannel, First Hop Redundancy protocols
• Network services: DNS, DHCP, NAT, NTP
• Experience with wireless networks, controllers, and access points
• Ability to provide 3rd-level network support
• Familiarity with network optimization tools (Riverbed, Cisco WAAS)

Nice to Have

• Experience with SD-WAN (Viptela, CloudGenix, SilverPeak, VeloCloud)
• Exposure to NSX-T / SDN technologies
• Network security experience (Cisco ASA, Juniper Firewalls)
• Wireless network design and implementation