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Offer summary
(Summary generated by AI based on the full job description)
The project covers data center network operations for a large banking group. Key stack includes Cisco ACI, Cisco Nexus (9k, 7k, NX‑OS) and planned Huawei CloudEngine from 2028. Responsibilities include end‑to‑end product operation: configuring and troubleshooting ACI (APIC, tenants, L4‑L7), managing Nexus (vPC, FEX), fabric and firmware upgrades, 2nd/3rd‑level incident handling and root cause analysis, monitoring with CheckMK, logs in Splunk, vulnerability management, CMDB maintenance, audit support and driving automation.
Network Engineer – Data Center Network / Cisco ACI & Nexus
Company: OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
from: 5 November 2026
to: 5 December 2026
160 - 200 złnet (+ VAT)/ hr.B2B contract (full-time)
Offer parameters
level:mid
working mode:remote
location:Warszawa, Masovian
Warszawa, Masovian
Requirements
Expected technologies
Cisco ACI
Cisco Nexus
APIC
NX-OS
vPC
FEX
M-FC
Cisco Smart Licensing
Huawei CloudEngine
Splunk
Optional technologies
Ansible
Python
CheckMK
Our requirements
- Several years of hands-on operations experience in data center environments
- Solid knowledge of Cisco ACI, including APIC, tenant concepts and L4-L7 integration
- Solid knowledge of Cisco Nexus and NX-OS
- Cisco CCNA or CCNP Data Center certification (or equivalent); CCNP Data Center preferred for senior candidates
- Some experience with Huawei data center / CloudEngine components, or willingness to learn them quickly
- Experience handling major incidents in a regulated (ideally banking) environment
- Solid understanding of ITIL processes in a regulated environment: Incident, Problem, Change, Release, Knowledge, Configuration, Event, Availability and Capacity Management
- Experience maintaining operational documentation
- Fluent English, spoken and written
- An existing 1-person company (działalność gospodarcza) registered in Poland
Optional
- German language skills
- Huawei HCIP or HCIE Datacom certification
- ITIL certification
- Network automation with Ansible and Python, and experience with CheckMK
Your responsibilities
- Run and operate the Data Center Network product end to end on Cisco ACI and Cisco Nexus (9k, 7k), and on Huawei components from 2028: from transitioning new infrastructure into operations, through changes and releases, to decommissioning
- Configure, administer and troubleshoot Cisco ACI, including APIC, tenant policies and L4-L7 service graphs
- Configure and support Cisco Nexus switching with NX-OS, vPC, FEX and M-FC
- Carry out ACI fabric upgrades and EPG changes in coordination with the Lead Network Engineer
- Manage the firmware lifecycle for Nexus and ACI and handle licences with Cisco Smart Licensing
- Prepare for the planned Huawei CloudEngine rollout
- Analyse and resolve fabric outages, packet loss and multipath issues
- Handle 2nd and 3rd-level incidents and support root cause analysis, known-error documentation and workarounds
- Support the Lead Network Engineer and on-call lead during major incidents (bridge calls, data collection, emergency changes)
- Tune event monitoring in CheckMK and report on service availability (uptime, MTBF, MTTR) and capacity
- Investigate log anomalies flagged in Splunk and maintain standard syslog configurations
- Run vulnerability management (security patches, CVE tracking, remediation) in line with ISMS requirements
- Maintain the CMDB (IP addresses, VLANs, VRFs, configuration items) and track licences and asset lifecycle
- Support internal and external audits and drive continual service improvement and automation
- Share knowledge with stand-ins and contribute to runbooks, configuration standards and SOPs
About the project
We are looking for an experienced Network Engineer – Data Center Network to join the network operations team of the central IT services provider of one of Germany's largest banking groups. The client runs the core banking infrastructure for hundreds of regional savings banks across Germany, so you will work in a large, stable and highly regulated environment. The data center network is planned to move to Huawei components from 2028, so you will also have the chance to get involved in that transition.
For this role, Optiveum is the recruitment and contracting party, which means you will sign the B2B cooperation agreement directly with us.
Key Details:
Rate: 160–200 PLN/h net (B2B), depending on experience
Contract: B2B with Optiveum, until the end of 2026 with a planned extension through 2027
Work Model: 100% remote, full-time (5 days per week)
Location: Remote from Poland
Start: ASAP
Languages: fluent English is required; German is a strong plus
Recruitment Process:
- Please apply with your CV in English
- We will share your CV with the client only after you have agreed to it
- Candidates who have already been presented for this client in the last 6 months, directly or through another agency, cannot be considered again
OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Optiveum is acting as a sourcing partner for this role. You will be signing a cooperation agreement directly with our partner—a renowned IT contracting company with nearly 20 years of presence on the market.
The end client operates in the international public, defense, or government administration sector, leading large-scale, multi-million euro digital transformation projects.
This is how we work
Network Engineer – Data Center Network / Cisco ACI & Nexus
160–200 zł / hr. (B2B)
I apply to:
OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Warszawa, Masovian
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