Senior Security Engineer

Salary: £55,000 - 55,000 per year

Requirements:

• Strong experience designing and implementing technical security systems and controls.
• Advanced knowledge of at least three security technologies, such as SIEM, Defender, Sentinel, EDR/XDR, Active Directory, Nessus, PAM, AWS IAM or Entra.
• Extensive knowledge of security controls across Windows, Linux, mainframe, AWS or Azure environments.
• Strong analytical and problem-solving skills, including threat analysis and security incident response.
• Ability to manage priorities, communicate technical risks clearly and demonstrate leadership through coaching or mentoring.
• Experience working across both cloud and on-premise environments.
• Knowledge of identity and access management, privileged access, cryptography or network security.
• Experience using automation, scripting or coding to improve operational security.
• Experience supporting customer-facing digital services within a large or complex organisation.
• Previous experience working within government, a regulated environment or another organisation operating critical services.
• For SC eligibility, you must have resided in the UK continuously for the last 5 years.

Responsibilities:

• Design, implement and improve technical security systems and controls across our infrastructure.
• Investigate and resolve complex security issues arising from incidents, operational activity and service development.
• Identify and manage technical security risks, vulnerabilities and appropriate mitigations.
• Develop and maintain security monitoring, vulnerability and threat-detection tooling.
• Provide technical guidance, assurance and mentoring to operational teams, projects and colleagues.

Technologies:

• AWS
• Active Directory
• Azure
• Cloud
• Cryptography
• IAM
• Support
• Linux
• Network
• Security
• Windows

More:

We are HM Land Registry (HMLR), protecting the critical infrastructure and digital services that support land and property ownership across England and Wales. This is a permanent Senior Infrastructure Engineer role in our Security Cluster, based within our IT Operations Practice and working across a varied technology estate that includes cloud, on-premise and legacy environments. We offer a salary of £48,400 to £59,300 based on interview assessment, a 29% employer pension contribution, full Civil Service benefits, flexible hybrid working from Croydon, Plymouth, Gloucester or Swansea, and a strong culture focused on inclusivity, continuous learning and development. We provide annual leave, progression pathways, training and accreditation support, flexi-time, condensed hours, a social and sports club, an employee assistance programme, season ticket loans and cycle to work scheme. You will help protect critical national infrastructure at significant scale, with broad exposure to modern and legacy security technologies and opportunities to develop your career within an experienced security function.

last updated 30 week of 2026