Job Description* **Please wait...**Principal Security Authority - UKReq ID: 57712Posting Start Date: 21/04/2026Job Function: SecurityDivision: BT InternationalJob Location: GBR Ipswich - Orion BuildingAdvertised Salary: competitive**Recruiter: Djoice Bastos Silva****Hiring Manager: Dave Harcourt****Career Grade: C****Internal Closing Date: May 1st, 2026**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 The role:**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.The security of International’s products and platforms underpins our mission to be the market leader in secure multi-cloud connectivity for our customers. This role is at the heart of building security into International’s products and platforms, using modern, threat focussed security methodologies to ensure all security risks are idenfied and appropriately treated from design through to in-life operations. You’ll be embedded with the teams defining and building our platforms, building upon your security expertise in networks, software and cloud, and working closely with wider BT Security teams and our supplier community to embed secure by design and secure by default into everything we do.**What you will be doing*** **You will be the security authority** for a large proporation of International strategic products and platforms, responsible for establishing and maintaining threat models that are the heart of our threat led security approach.* **Implement and oversee interventions** in response to issues identified proactively from the threat modelling, or reactively from assurance activities such as penetration testing or assurance reporting. You’ll be driving activity across pan-BT teams, including through our supply chain in our drive for Secure by Default.* **Promote a strong security culture** across the engineering teams and suppliers you’ll work with, demonstrating modern security approaches aligned with agile implementation methodologies.* **Act as a security advocate** and be an authority for technical security approaches you lead for on behalf of the International Security team, including external stakeholders to demonstrate security thought leadership, innovative thinking, and adoption of latest industry best practice.* **Be a coach and guide** for the wider security community on threat led secure by design, adoption of modern security approaches such as zero trust, and growing future talent.**What you’ll need to succeed (Skills & Experience)*** **Network, IT, and data security expertise** Deep understanding of network security, IT infrastructure, and data protection—especially within Telco and SaaS/PaaS environments.* **Communications and influence** Ability to communicate effectively and ensure engagement of all members of the agile teams you’ll be embedded in, as well as influencing strategic direction at director level. This includes engagement with external partners and suppliers.* **Threat Modelling and Secure by Design** Proven capability to assess designs, clarifying for detail where needed, to identify security threats to the design and through collaborative working with the squad identify specific point controls to mitigate and monitor. You’ll also need to assess how in-life risks factor against the threat models to drive mitigations, and use automated testing methodologies to prove mitigations are established and effectively maintained.* **Commercially savvy** You examine many potential ideas and evaluate each one against business goals and strategy, balancing between technical and procedural approaches with a strong commercial business awareness .* **Curious mindset and self learner** You’ll maintain a deep expertise in aspects of security relevant to this role, and be a self-learner in growing expertise and sharing that knowledge across the wider community.* Extensive knowledge of security (both physical and cyber) for large scale networks* A commercial acumen to ensure the imperatives of BT International are delivered at minimum lifecycle cost.* Strong knowledge of the security methodologies, large scale network security engineering and operational security approaches.* A very strong knowledge of 3rd party solutions for security management.* Extensive technology vulnerability assessment and a working understanding of the tooling and AI techniques to manage security.* An ability to influence strategy of BT Group security Director level.* Owning and driving security improvements to optimise performance**BT Group ́s Behaviours**| | || --- | --- || **Customer First** | Prioritize customer needs in every decision and action. || **Challengers** | Challenge the status quo and bring innovative ideas to life. || **Committed** | Own outcomes and deliver with integrity. || **Clear** | Communicate openly and simply, ensuring alignment. || **Connected** | Collaborate across teams to achieve shared goals. |* **Please wait...**
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