Network Engineer – Load Balancing, F5 BIG-IP

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

📋 Description

• Oversee and manage the Load Balancing product comprehensively on F5 BIG-IP, from integrating new infrastructure into operations through updates, releases, and decommissioning.

• Configure, manage, and troubleshoot F5 BIG-IP LTM, DNS, and AFM.

• Administer virtual servers, pools, iRules, and SSL offloading, while maintaining the lifecycle of certificates.

• Oversee the firmware lifecycle, including TMOS upgrades and F5 BIG-IP licensing management.

• Analyze and resolve application delivery challenges, persistence issues, health monitors, and HA-pair failovers.

• Perform scheduled maintenance and modifications during out-of-hours maintenance periods and participate in the weekly Change Advisory Board.

• Address second- and third-level incidents and support root cause analysis, documentation of known errors, and workarounds.

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

• Adjust event monitoring in CheckMK and report on service availability, uptime, MTBF, MTTR, and capacity metrics.

• Examine log anomalies in Splunk and maintain standard syslog setups.

• Execute vulnerability management, including security patches, CVE tracking, and remediation, adhering to ISMS requirements.

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

• Support internal and external audits while driving continual service enhancement and automation.

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

⛳️ Requirements

• Multiple years of practical experience with F5 BIG-IP (LTM, DNS, iRules, TMOS) in high-availability data center settings.

• Proficient knowledge of F5 BIG-IP AFM.

• F5 Certified BIG-IP Administrator (F5-CA) or an equivalent credential.

• Willingness to participate in a rotating 24/7 on-call schedule, including nights, weekends, and public holidays.

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

• Strong grasp of ITIL processes within a regulated setting.

• Proficient in English, both spoken and written.

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

• Proficiency in German is an advantage.

• F5 Certified Solution Expert (F5-CSE) is a plus.

• ITIL certification is an added benefit.

• Skills in network automation with Ansible and Python, along with experience in CheckMK and Splunk are advantageous.

• CV in English required.

• Candidates submitted for this client within the last 6 months cannot be reconsidered.

🏝️ Benefits

• 100% remote work.

• Full-time schedule.

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

• Rotating 24/7 on-call compensation as stipulated by the contracted role.