About the role

  • Build hx's security programme from the ground up, setting direction for security architecture, compliance, and incident response as we scale globally.
  • Design and implement security controls across AWS cloud infrastructure, Kubernetes workloads, and our multi-product platform, ensuring systems are secure by design.
  • Integrate security into engineering workflows by embedding automated security testing, vulnerability management, and threat detection into CI/CD pipelines without slowing teams down.
  • Lead or contribute to compliance initiatives (SOC2, ISO27001) by implementing technical controls and working cross-functionally with legal, engineering, and business teams to enable enterprise sales.
  • Build security automation and tooling by writing code and scripts that scale security practices, detect vulnerabilities, and enforce policies efficiently.
  • Partner with Engineering Managers, Principal Engineers, and Product Managers to embed security thinking early in design and architecture decisions.
  • Act as a trusted voice in critical moments: responding to incidents, unblocking teams on security questions, and keeping high-stakes initiatives secure and on track.
  • Assess and secure AI-powered systems across hx's platform, implementing controls that enable safe adoption of AI while mitigating risks like prompt injection, data leakage, and model vulnerabilities.

Requirements

  • Built or significantly contributed to security programmes from the ground up, establishing foundational security controls, compliance readiness, and incident response capabilities.
  • Designed and implemented security architecture for cloud-based distributed systems (AWS or equivalent), including multi-account strategies, identity and access management, network security, and data protection.
  • Driven technical security improvements by writing code, building tools, and implementing controls that scaled with company growth.
  • Integrated security into development workflows through DevSecOps practices including automated testing, secrets management, container security, and infrastructure-as-code security.
  • Led or supported compliance initiatives (SOC2, ISO27001, GDPR, or similar), mapping technical controls to compliance requirements and guiding teams through audit cycles.
  • Built trust with engineering teams by contributing technically and making security collaborative and frictionless.
  • Balanced security rigor with business goals, making risk-based trade-offs that enabled growth while protecting customers and the business.
  • Evaluated security implications of AI/ML systems, including understanding AI-specific risks and implementing controls to secure them.

Benefits

  • £5,000 training and conference budget for individual and group development.
  • 25 days of holiday plus 8 bank holidays (33 days total).
  • Company pension scheme via Penfold.
  • Mental health support and therapy via Spectrum.life.
  • Individual wellbeing allowance via Juno.
  • Private healthcare insurance through AXA.
  • Income protection and Life Insurance.
  • Cycle to Work Scheme

Job title

Staff Security Engineer

Job type

Experience level

Lead

Salary

Not specified

Degree requirement

No Education Requirement

Location requirements

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