Network Security Specialist - #187436

Network Security Specialist

Req ID: 57126

Posting Start Date: 14/05/2026

Job Function: Cyber Security

Division: UK Business

Job Location: GBR Hatfield - 5 Trident Place

Advertised Salary: Competitive salary with benefits

Job Req ID: 57126

Function: Service

Location: Sheffield, Hatfield, Belfast

Salary: Competitive (Internal Band D) + Benefits

Why this job matters

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 all of our UK contracts. Building intermate 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.

Additionally, the support of new products and services is an important part of keeping pace with the industry and customer requirements and allows BT to maintain market position as key supplier of services. The role holder will therefore be expected to provide support in this area, working with confidence and initiative and applying excellent self-management to promote successful outcomes.

What You’ll Be Doing

• Develop and deliver brilliant, industry redefining platforms as well as their own skills.
• We need you to be a cyber incident decision maker, responsible for ensuring that mitigation controls and incident response are appropriate.
• Providing 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.
• Support team leader and line manager.
• Ensure full awareness of the need to always safeguard sensitive customer information.
  
  

The Experience You Will Need

You’re a hands-on engineer with expertise in at least one platform or programmes 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.
• Always maintain appropriate levels of clearance (MPS, NPPV3 & SC clearances).
  
  

Benefits

• 10% on target bonus
• BT Pension scheme, minimum 5% Employee contribution, BT contribution 10%
• 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
  
  

With over 175 years of heritage, BT is now the flagship business brand of BT Group. We’ve brought together our best people and capabilities into a B2B powerhouse serving 1.2 million business customers internationally.

We’re a global 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 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.

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 Job Description, please apply anyway - you may just be the right candidate for this or other roles in our wider team.