Principal Security Authority - Hungary

Job Description

About the position

Recruiter: Marietta Petra Csiki

Hiring Manager: Dave Harcourt

Career Grade: C

Internal Closing Date: May 1st, 2026

About BT

BT Group is the UK’s leading communications group and the holding company behind some of the country’s most recognised brands – including BT, EE, Openreach and Plusnet. Our purpose is as simple as it is ambitious: we connect for good. Our customers include consumers, small, medium and large businesses, public sector organisations and other communications providers.

BT Group’s role is about setting direction, unlocking value and creating the conditions for our brands and businesses to thrive.

Having come through the most capital-intensive phase of our fibre investment, our focus now is on what comes next – simplifying how we operate, using technology and AI to work smarter, and organising ourselves to serve customers better and grow sustainably. Group teams shape strategy, policy, brand, capital allocation and transformation, helping the whole organisation perform at its best.

We have a singular culture that unites all our people: we are customer-first challengers, who are committed, clear and connected. These behaviours unite us as one team to deliver for our colleagues, our customers, our stakeholders and the country. Joining BT Group means working at the heart of a business that matters to the UK, with the opportunity to shape decisions, influence outcomes and help set the future course of one of the country’s most important companies.

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 (Role Accountabilities)

• 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 and 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

Our Package

Compensation and benefits:
• Attractive salary
• Company car / car allowance
• Cafeteria package - HUF 600,000/ year
• Performance-based bonus
• Comprehensive private health care package for all the employees, which can be extended to family members
• Nursery support for mothers returning from maternity
• Extended paternity leave: 10+10 day fully paid days
• Commuting allowance
• Home office allowance
• Employee discount opportunities
• Highly affordable mobile packages for the family as well

Work atmosphere and community:
• New high-class offices both in Budapest and Debrecen
• Wide-range of company and community programmes (including support for different sport activities)

Flexibility:
• Family-friendly culture
• Smart working approach (hybrid working model, 3 together, 2 wherever)

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.

In case of internal application

In case of internal application please do not forget to inform your line manager about your willingness for the internal move. Please note that the future manager might ask for reference about you from your current line manager. Please also bear in mind that your salary will not be adjusted automatically, but the new Line Manager can request it via off-cycle process.