Senior Network and Firewall Administrator

Location:  Budapest or Madrid

 

 

In case of internal application, please do not forget to inform your line manager about your willingness for the internal move. Please note that the future manager might ask for a reference about you from your current line manager. Please also bear in mind that your salary will not be adjusted automatically, but the new Line Manager can request it via the off-cycle process. In case you are not selected for the position, the Recruitment Team will let you know via email. Please ensure that you have completed a minimum of 12 months in your current role before submitting your application. 

 

At BT International, our purpose is to keep the world connected. As part of BT, we build on almost 180 years of innovation and expertise to deliver secure connectivity and digital services to some of the world’s leading multinational businesses and organisations. Our customers trust us to safeguard their data, drive their digital transformation and keep their businesses running.

 

With colleagues on the ground across the world and supporting customers wherever they need to operate, BT International offers a truly global experience. Whether it’s about providing cloud connectivity, helping organisations collaborate, or enabling innovation in cybersecurity and digital services, you’ll be part of a team that shapes how businesses succeed in a world that is being transformed by AI.

 

If you have the drive and ambition to make an impact on a global stage, BT International is where it happens.

 

Why this job matters

 

We build, maintain, develop and improve centralised security management, monitoring and reporting platforms for BT Security SOCs (Security Operations Centres) and SIEMs (Security Information and Event Management) located globally. The platforms which we manage help our SOC Analysts, Specialists, Implementation Engineers and Designers to deliver the best possible Managed Security Services to our customers.

 

What I’ll be doing – your accountabilities

 

• Participate in an on-call rotation.

• Monitor platform 24x7x365 and resolve any issues reported by monitoring application.

• Maintain the availability, integrity and confidentiality of the security platforms.

• Upgrade, remediate and patch underlying Operating Systems (Windows, Linux, ESXi, firewalls) to maintain the overall platform health.

• Write and update knowledgebase articles.

• Review design documentation to ensure they are accurate, unambiguous and verifiable.

• Conduct vulnerability scans and propose steps for remediation.

• User and groups administration.

• Work across teams to deliver and support of BT Security services features.

• Audit and maintain firewall configurations and policies.

• Support the management of relationships with specific teams, suppliers and stakeholders.

• Design, build and deliver custom applications and resilient systems for the security platform.

• Identify and implement platform improvement work – continuously improving platform and BT Security performance.

• Develop and implement observability tooling for the security platform.

• Renew license and support contracts with vendors as/when required by BT Security Product Line and specific platforms.

 

Skills required for the job

 

Mandatory:

• On-call rotation.

• Excellent written and verbal communications, including documentations skills.

• General IT problem solving and debugging.

• IT troubleshooting. Network troubleshooting. Firewall troubleshooting.

• Familiarity with ticketing and change management process and procedures.

• Ability to learn new technologies without supervision. Self driven learning.

 • Open Source technologies.

 

Preferred: at least 50%+ of:

• CISSP, CompTia Network+, Security+, CSA+ and/or CEH or equivalent

 

Linux Systems Administration, including:

• Install, configure, manage, maintain, and troubleshoot RHEL systems.

• In-depth knowledge of SSH client and server configuration.

• Unix/Linux shell scripting and common tools