BT Group
2nd Line Firewall Engineers
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Job Title: 2nd Line Firewall Engineers
Req ID: 58909
Job Function: Cyber Security
Posting Start Date: 10/08/2026
Posting End Date: 19/08/2026
Division: UK Business
Job Location: GBR Belfast - Riverside Tower, GBR Hatfield - 3 Trident Place, GBR Sheffield Endeavour, GBR-London-BTHQ One Braham, GBR-Manchester-New Bailey
Advertised Salary: Competitive + Benefits
Recruiter: Jayson Coley-Wynters
Career Grade: Internal E / Competitive + Benefits
Closing Date: 19th August 2026
Locations: Sheffield, London, Hatfield, Belfast and Manchester
PLEASE NOTE BEFORE APPLYING: Role requires SC (Security Clearance) Minimum 5 years UK working history
About The Role
Our purpose is to use the power of communication to make a better world. For each other, for our customers, for society and our communities.
This role exists to provide specialist technical support on complex network security and cyber security deployments for any and all of our UK contracts. Building intimate working relationships and trust through effective communication and meeting expectation and deadlines is key. Liaising with customer representatives or vendors and directing other support staff where appropriate will form part of the role.
What You’ll Be Doing
One key thing that all of our engineers have in common is a desire to develop/deliver brilliant, industry redefining platforms as well as their own skills.
- Be a cyber incident decision maker, responsible for ensuring that mitigation controls and incident response are appropriate
- Provide security advice and remediation to Lines of Business within BT and external customers
- Complete and own integration testing on new products and services, producing all relevant supporting documentation
- Positively support team leader and line manager
- Ensure full awareness of the need to safeguard sensitive customer information at all times, so that customers perceive BT to be a trustworthy organisation
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Essential Skills / Experience
You’re a hands-on engineer with expertise in at least one platform or programme below - if your experience doesn't match our stack exactly then don't worry, we hire based on engineering talent, not vendor or language-specific skillset. Interested in us? We're interested in you!
- Comptia Network + & Security +
- Fortinet
- Cisco ASA & FirePower
- Palo Alto
- Azure / AWS
- Python, Go, Bash
- Native Cloud Security
- Linux/Unix OS
- Windows OS
Knowledge and understanding of TCP/IP & OSI seven-layer model and how data networks are structured and operate.
Knowledge of the best engineering practices and continuous delivery
Maintain appropriate levels of clearance at all times (MPS, NPPV3 & SC clearances at time of writing)
Our Package
At BT, we entertain, educate, and empower millions of people every single day. We’re a brand built on connecting people – whether that’s friends, family, businesses, or communities. Working here, you’ll receive an attractive salary and a range of competitive benefits, but – more than that – you’ll be joining an ambitious organisation with a culture of togetherness, collaboration, and inclusivity, that takes a genuine and proactive interest in your progress and development.
- Competitive salary
- 10% on target bonus
- BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%
- On-call allowance
- 25 days annual leave (not including bank holidays), increasing with service
- Huge range of flexible benefits including cycle to work, healthcare, season ticket loan
- World-class training and development opportunities
- Option to join BT Shares Saving schemes
- Discounted broadband, mobile and TV packages
- Access to 100’s of retail discounts including the BT shop
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Flexible Working
This role offers a 3 together, 2 wherever working model. This means you are required to be at your contractual location 3 days a week with 2 flexible days per week.
With over 180 years of heritage, BT Business has brought together our best people and capabilities into a B2B powerhouse serving 1.2 million business customers in the UK
We’re a leader for secure connectivity and collaboration platforms for businesses of all shapes and sizes, from big household names and government departments, right through to sole traders and new start-ups. But it’s not just the technology that matters, it’s what it can do to help them build stronger, smarter, more secure businesses.
We are Customer-First Challengers, who are Committed, Clear and Connected. We value diversity and inclusion and believe in making a positive impact. We connect for good by championing digital inclusion and equipping people, businesses, and communities with digital skills to thrive.
As a member of our team, you will be part of an organisation that celebrates difference, fosters innovation and provides you with opportunities to be your best. With millions of businesses relying on us daily, joining BT means you can be part of a diverse and multi-skilled team that makes a significant impact to society.
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