Job Description
Infrastructure Engineering Specialist
Req ID:  57323
Posting Start Date:  10/04/2026
Job Function:  Security
Division:  UK Business
Job Location:  GBR Cheltenham - Project Offic, GBR Ipswich - Adastral Hub, GBR London - Monument TE
Advertised Salary:  Competitive

Recruiter: Lloyd Hughes

Career Grade: D

Internal Closing Date: 1st May 2026

Due to the sensitive nature of this role, you may be required to undergo DV (Developed Vetting) level Security Clearance (https://www.gov.uk/government/publications/united-kingdom-security-vetting-clearance-levels/national-security-vetting-clearance-levels). An allowance of £5k per annum may be payable monthly while you hold this DV and continue to work in a role that requires that level of security clearance. The terms of this allowance will be made available if you are successful in being recruited into this role.

Security isn’t always the first thing that comes to mind when you think of BT, but when it comes to keeping everyone safely connected, We Are The Protectors. We deal with thousands of cyber-attacks every day, so that millions of people can safely go about their daily lives and run their businesses.   We deliver vital work at scale, with real breadth and impact. We connect for good.
You'll be joining a specialist security team that is a trusted partner to governments worldwide, protecting critical national infrastructure and committed to the safety and security of our nation and global communities. Our mission focused work is innovative, inspiring and technologically challenging in a way that makes every day different and stimulating. We provide the opportunity to work on rare projects, with exciting tools and brilliant people. Everyone has access to unparalleled professional and personal development opportunities and your contribution is always valued.

About this role

  • We are looking for a security focused Infrastructure Engineer to support and develop critical, largescale onprem Cybersecurity platforms within our Cyber Processing & Data Science capability area. 
  • In this role, you’ll use your expertise to embed security controls into our architectures, processes and ways of working, ensuring alignment with industry best practice. You’ll work closely within a multidisciplined engineering team to meet the needs of both internal and external customers. You will demonstrate technical leadership through the quality of your work, whilst also supporting others through collaboration and knowledge sharing. 

This role requires 5 days a week onsite. Mon - Fri 37.5 hours per week. DV Security Clearance is required. Must have lived in the UK for 10+ years to obtain clearance.

What you'll be doing

  • Drive improvement in the Platform’s security posture, ensuring that security controls are embedded as early as possible
  • Take ownership of complex technical deliveries, being confident with ambiguous high-level problem statements  
  • Be a practitioner and advocate in the use of DevSecOps technologies, tools, and practices.
  • Support the maintenance of existing IT infrastructure
  • Identify and lead the improvement of inefficient or insecure ways of working 

What you'll need to succeed

  • Have a passion for technology, and creating solutions that make new things possible
  • Be self-driven, able to get to grips with innovative technologies and demonstrate independent research and learning
  • Demonstrate good problem-solving ability, able to work through issues in a logical manner, documenting solutions as required
  • Linux
  • CIS Benchmarks (or similar) 
  • Vulnerability Scanning (i.e, Trivy, Nessus
  • Security Information and Event Management 
  • Static Code Analysis 
  • Software Bill of Materials (SBOM) 
  • Patch Management 
  • Kubernetes Security Standards 

Our Package

Tailored benefits make a real difference. That’s why we offer a comprehensive range to support your growth, wellbeing, and everyday life. You can design the package to suit you and your lifestyle. Your core benefits include:

  • 10% on target annual bonus
  • Access to an online private GP 24/7 for you and your immediate family
  • Market-leading paid carers leave with up to 2 weeks off
  • Equalised maternity, paternity, and adoption leave – 18 weeks’ full pay and 8 weeks’ half pay
  • Discounted EE and BT products, including mobile and broadband
  • Market leading Pension scheme – 5% from you and 10% from us
  • Holiday purchase scheme
  • You can select additional benefits, including healthcare, dental, gym memberships and more when you’re ready.

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.