Network Engineer – Data Center Network, Cisco ACI, Nexus

This is a fully remote position, open to applicants in Poland.

📋 Description

• Manage and operate the Data Center Network product comprehensively on Cisco ACI and Cisco Nexus (9k, 7k), as well as on Huawei components starting from 2028.

• Facilitate the transition of new infrastructure into operational status, oversee changes and releases, and decommission outdated infrastructure.

• Configure, manage, and troubleshoot Cisco ACI, encompassing APIC, tenant policies, and L4-L7 service graphs.

• Configure and provide support for Cisco Nexus switching utilizing NX-OS, vPC, FEX, and M-FC.

• Execute ACI fabric upgrades and EPG modifications in collaboration with the Lead Network Engineer.

• Oversee the firmware lifecycle for Nexus and ACI, and manage licenses through Cisco Smart Licensing.

• Prepare for the anticipated Huawei CloudEngine rollout.

• Analyze and resolve fabric outages, packet loss, and multipath problems.

• Address 2nd- and 3rd-level incidents, supporting root cause analysis, known-error documentation, and workarounds.

• Assist the Lead Network Engineer and on-call lead during significant incidents, including bridge calls, data gathering, and emergency modifications.

• Optimize event monitoring in CheckMK and provide reports on service availability, uptime, MTBF, MTTR, and capacity.

• Investigate log anomalies identified in Splunk and uphold standard syslog configurations.

• Conduct vulnerability management, including the application of security patches, CVE tracking, and remediation, in accordance with ISMS requirements.

• Maintain the CMDB, covering IP addresses, VLANs, VRFs, and configuration items, while tracking licenses and asset lifecycle.

• Support internal and external audits, promoting continual service improvement and automation.

• Share insights with stand-ins and contribute to the development of runbooks, configuration standards, and SOPs.

⛳️ Requirements

• Multiple years of hands-on operational experience within data center settings.

• Strong understanding of Cisco ACI, including APIC, tenant concepts, and L4-L7 integration.

• Proficient knowledge of Cisco Nexus and NX-OS.

• Cisco CCNA or CCNP Data Center certification (or equivalent); CCNP Data Center is preferred for senior candidates.

• Some familiarity with Huawei data center / CloudEngine components, or a readiness to learn them swiftly.

• Experience managing major incidents in a regulated environment (preferably banking).

• Comprehensive understanding of ITIL processes in a regulated setting: Incident, Problem, Change, Release, Knowledge, Configuration, Event, Availability, and Capacity Management.

• Experience in maintaining operational documentation.

• Proficient in English, both spoken and written.

• An existing one-person company (działalność gospodarcza) registered in Poland.

• German language proficiency.

• Huawei HCIP or HCIE Datacom certification.

• ITIL certification.

• Network automation experience with Ansible and Python, along with familiarity with CheckMK.

🏝️ Benefits

• 100% remote work.

• Full-time schedule.

• B2B cooperation agreement with Optiveum through the end of 2026, with a planned extension through 2027.

• Opportunity to be involved in the planned Huawei CloudEngine transition starting from 2028.

• A stable, large, and highly regulated banking environment.

• Remote work from Poland.