Network & System Security Specialist

Recruiter: Djoice Bastos Silva

Hiring Manager: Rob Roovers

Closing Date: 09/02/2026

This role can be based in Birmingham or Ipswich

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.

About this role – Network & System Security Specialist

Systems, Security & Tooling Team was formed as a progressive operational support team towards the convergence of multiple Global domains across BT. We pride ourselves on providing expert third line support to an extensive range of services; ensuring the required levels of availability are maintained. The team is widely recognised for getting things done in a flexible manner, while making transformational (or tactical) improvements along the way. We do this by ensuring we have the right people to achieve our high ambitions.

We are seeking a passionate network & System Security Specialist, to join the unit in the role of Security Specialist. This role will require a mix of hands-on technical development and consultancy, whereby the successful candidate will be implementing technical requirements as well as focussing on policy, governance and management. The ideal candidate would assertively implement change and be comfortable mandating this to achieve success.

You will need to bring security awareness and strong security culture into the wider environment.

What you’ll be doing

• Project Management
• Knowledge sharing and train staff on security awareness
• Work within defined team framework & security boundaries
• Analyse Orgs & Roles to create access policies
• Understand Technologies to assess vulnerabilities
• Documenting internal/external processes for achieving optimal performance of computer systems through Wiki and maintaining Jira stories for prioritization of the workload

• Technical Acumen: Apply your understanding of network principles to troubleshoot to assess security incidents and look at how you can optimize performance and enhance security across our infrastructure.
• Incident Management and Resolution: Be prepared to support a 365x24/7 callout, providing third line technical resolution covering an extensive range of technologies.
• Customer Focus: Be a technical expert who understands the end-to-end journey of our customers.
• Growth and Development: As a technically talented expert you should enhance the brand of the team and support those around you to be accountable and perform at their best.

You'll have the following skills & experience

You must have

• Technical Proficiency :
  • Networking principles (IP, tcp/udp/icmp, bgp,ospf,isis)
  • Firewalls and connectivity
  • Network services (dns, ntp, tacacs, radius,ldap)
  • Security Tools
  • Linux
• Growth Mindset
  • Security culture/mindset
  • Say ‘no’ (and offer alternative solutions if possible)
  • Ability to support/lead audits (SOC2, ISO27001)
• Programming Proficiency : Proficiency in at least one programming language, such as Bash, Python and/or Ansible.
• Team Player

Desired

• Experience in an ISP Environment : experience in a fast-paced ISP setting, managing and troubleshooting internal networks.
• Continuous Application Deployments : Experience deploying new developments to live networks across a variety of infrastructure, including Virtual Machines, Routers, Switches, and Servers.

Benefits

• Competitive salary

• 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

• On call allowances and overtime

Our leadership standards

Looking in:
Leading inclusively and Safely I inspire and build trust through self-awareness, honesty and integrity.
Owning outcomes
I take the right decisions that benefit the broader organisation.

Looking out:
Delivering for the customer I execute brilliantly on clear priorities that add value to our customers and the wider business.
Commercially savvy
I demonstrate strong commercial focus, bringing an external perspective to decision-making.

Looking to the future:
Growth mindset I experiment and identify opportunities for growth for both myself and the organisation.
Building for the future
I build diverse future-ready teams where all individuals can be at their best.

About BT

BT has a key role in British society, fostering change and leading technology innovation. From delivering the Olympics, to supporting the emergency services, to investing more into research than any other UK technology company, we take pride in everything we do - and in the people who work here.

We're now a global company operating at the forefront of the information age, employing 90,000 people in 180 countries. And we're on a mission. Guided by our core values of Personal, Simple and Brilliant our goal is to help customers, communities and businesses overcome barriers and release their potential.

So, if you're interested in the power of potential, why not join us today and release yours?

Our mission is to break down the barriers of today to release the potential of tomorrow. Join us today and release yours.

There are two things that we want to share with anyone considering joining us.

Firstly, we’ve got big ambitions for our colleagues and the future of the organisation. These include our vision that inclusion and accessibility drive every conversation we have and every decision we make. We want our workforce to fully represent the communities and customers we serve, because a diverse business is a better business. We value every colleague, their diversity and the contribution that they make. When we say you’re welcome at BT, we really mean it.

Secondly, the one thing the pandemic has taught us is that a lot of current and future colleagues, where and when possible, want to embrace hybrid working. Therefore, we are introducing Smart Working at BT. Smart Working means having the flexibility to choose, as a team, how and where you work depending on your team’s deliverables and needs; when you are at your shared core location to connect with others and when not. It may not be for every role, and, as part of the recruitment process, you’ll have the chance to discuss Smart Working and how it might work for the job you are applying for.

How to Apply

It's easy to apply online; you just need a copy of your up-to-date CV and to follow the step-by step process. Don't worry if you need to make changes - you'll have the opportunity to review and edit your work on the final page. We look forward to receiving your application!