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Offer summary
(Summary generated by AI based on the full job description)
The project covers operation of core banking infrastructure for German savings banks. Key stack is F5 BIG-IP (LTM, DNS, AFM, iRules, TMOS), monitoring with CheckMK, Splunk, and work on certificates, TMOS upgrades and licensing. Responsibilities include end-to-end Load Balancer operations: configuration, administration, firmware lifecycle, SSL offloading, certificate lifecycle, 2nd/3rd level incident handling, CAB participation, CMDB maintenance, vulnerability management and audit support. Rate 160–200 PLN/h net (B2B), contract until end-2026 with planned extension, 100% remote, rotating 24/7 on-call.
Network Engineer – Load Balancing / F5 BIG-IP
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
F5 BIG-IP
LTM
DNS
AFM
iRules
TMOS
Optional technologies
Ansible
Python
CheckMK
Splunk
Our requirements
- Several years of hands-on experience with F5 BIG-IP (LTM, DNS, iRules, TMOS) in high-availability data center environments
- Working knowledge of F5 BIG-IP AFM
- F5 Certified BIG-IP Administrator (F5-CA) or equivalent certification
- Willingness to join a rotating 24/7 on-call schedule, including nights, weekends and public holidays
- 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
- Fluent English, spoken and written
- An existing 1-person company (działalność gospodarcza) registered in Poland
Optional
- German language skills
- F5 Certified Solution Expert (F5-CSE)
- ITIL certification
- Network automation with Ansible and Python, and experience with CheckMK and Splunk
Your responsibilities
- Run and operate the Load Balancing product end to end on F5 BIG-IP (LTM, DNS, AFM): from transitioning new infrastructure into operations, through changes and releases, to decommissioning
- Configure, administer and troubleshoot F5 BIG-IP LTM, DNS and AFM
- Manage virtual servers, pools, iRules and SSL offloading, and look after the certificate lifecycle
- Manage the firmware lifecycle, including TMOS upgrades, and F5 BIG-IP licensing
- Analyse and resolve application delivery issues, persistence, health monitors and HA-pair failover
- Carry out planned maintenance and changes in maintenance windows outside core hours and take part in the weekly Change Advisory Board (CAB)
- Handle 2nd and 3rd-level incidents and support root cause analysis, known-error documentation and workarounds
- Support the Lead Network Engineer 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 – Load Balancing (F5 BIG-IP) 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.
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)
On-call: rotating 24/7 on-call, plus planned changes in maintenance windows (usually nights and weekends)
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 – Load Balancing / F5 BIG-IP
160–200 zł / hr. (B2B)
I apply to:
OPTIVEUM SPÓŁKA Z OGRANICZONĄ ODPOWIEDZIALNOŚCIĄ
Warszawa, Masovian
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