Job Description

Network & Firewall Specialist

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Job Req ID: 49172
Posting Date: 16 Jul 2025
Function: Engineering
Unit: Networks
Location:
One Braham (4140), London, United Kingdom
Salary: competitive with great benefits

Recruiter: Luke Byrne

Career Grade: D

Internal Closing Date: 5/8/25

Location: London or Ipswich

Why this job matters

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As the Network & Firewall Specialist, you will be responsible for the end to end design, operation and support of the Network and Firewall estate for the Media Cloud infrastructure. You will have autonomy for assisting in road maps and the technical direction of the platform, including new partners or technologies used. This platform supports our EE TV product as well as our Media & Broadcast customers (BBC, ITV, The Premier League, Freeview and many more). It's critical to our business, so needs to be supported with high levels of availability and minimal outages. You will work closely with internal squads, all of which work in an agile fashion. An ideal candidate will also be willing to support the teams on-call commitments.

What you'll be doing

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Maintaining and administering Cisco networks, Check Point Firewalls & Management Troubleshooting, diagnosing, and resolving hardware, software, and other network defects Maintain integration with required monitoring tools to ensure operational observability Perform network changes to the firewall estate in support of Agile Delivery programs and Delivery teams Plan, Coordinate and implement Network security measures, enhancements and upgrades To be able to design new or changes to our network and firewall estate Maintain a strong security posture of our environments, keeping up to date with the latest security vulnerabilities To be able to work in an agile way (SCRUM/Kanban) Being an escalation point for 2nd/3rd line support tickets Raise changes for maintenance work in SNOW and Remedy and coordinate changes and approval process. Document new and existing processes to help share knowledge throughout the wider Core squad using wiki. Work in an agile manner using JIRA of a DevOps mindset across the engineering teams Works on continuous improvement opportunities to improve the team processes Perform capacity management Keeping up to date with the latest technologies and industry trends Build good working relationships with our customers and suppliers, communication is key

Skill and Experience

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Cisco Networking Check Point Firewalls, including VSX and Maestro/Scalable Platforms VMware NSX ITIL framework knowledge and experience Knowledge of agile ways of working (SCRUM/Kanban) Experience in an operations environment Technology Strategy Automation experience Cloud Computing Growth Mindset Fantastic communication skills


Experience you'd be expected to have



Mandatory Experience

Designing, upgrading, operating and supporting Cisco networks Designing, upgrading, operating and supporting Check Point Firewalls Designing, upgrading, operating and supporting VMware NSX networking/SDN To be able to demonstrate a good level of security experience, and best practices Experience in agile ways of working Experience of working with technical and non-technical internal stakeholders, to understand requirements and implications of new technologies. Collaborating with internal teams and external suppliers to understand, evaluate and validate new technologies / patterns.

Preferred Experience

Membership of professional body/ standards organisations Experience of working in an Operational role Current Cisco certifications Current Check Point certifications Working on-call and occasional overnight change windows

Benefits

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10% on target bonus BT Pension scheme, minimum 5% Employee contribution, BT contribution 10% From January 2025, equal family leave: receive 18 weeks at full pay, 8 weeks at half pay and 26 weeks at the statutory rate. It's for all parents, no matter how your family is made up. Enhanced women's health support: including help with menopause symptoms, cancer screenings, period care and more. 25 days annual leave (not including bank holidays), increasing with service 24/7 private virtual GP appointments for UK colleagues 2 weeks carer's leave World-class training and development opportunities Option to join BT Shares Saving schemes

About us

BT Group was the world's first telco and our heritage in the sector is unrivalled. As home to several of the UK's most recognised and cherished brands - BT, EE, Openreach and Plusnet, we have always played a critical role in creating the future, and we have reached an inflection point in the transformation of our business.



Over the next two years, we will complete the UK's largest and most successful digital infrastructure project - connecting more than 25 million premises to full fibre broadband. Together with our heavy investment in 5G, we play a central role in revolutionising how people connect with each other.



While we are through the most capital-intensive phase of our fibre investment, meaning we can reward our shareholders for their commitment and patience, we are absolutely focused on how we organise ourselves in the best way to serve our customers in the years to come. This includes radical simplification of systems, structures, and processes on a huge scale. Together with our application of AI and technology, we are on a path to creating the UK's best telco, reimagining the customer experience and relationship with one of this country's biggest infrastructure companies.



Change on the scale we will all experience in the coming years is unprecedented. BT Group is committed to being the driving force behind improving connectivity for millions and there has never been a more exciting time to join a company and leadership team with the skills, experience, creativity, and passion to take this company into a new era.

A FEW POINTS TO NOTE:

Although these roles are listed as full-time, if you're a job share partnership, work reduced hours, or any other way of working flexibly, please still get in touch.


We will also offer reasonable adjustments for the selection process if required, so please do not hesitate to inform us.

DON'T MEET EVERY SINGLE REQUIREMENT?

Studies have shown that women and people who are disabled, LGBTQ+, neurodiverse or from ethnic minority backgrounds are less likely to apply for jobs unless they meet every single qualification and criteria. We're committed to building a diverse, inclusive, and authentic workplace where everyone can be their best, so if you're excited about this role but your past experience doesn't align perfectly with every requirement on the , please apply anyway - you may just be the right candidate for this or other roles in our wider team.