Senior Cyber Security Engineer

rowdentech; West of England; On-site; GBP 70,000 - 110,000; Full time

Job summary

Rowden, based in Bristol, is seeking a Senior Cyber Security Engineer to design, implement and maintain secure systems within delivery teams.

The role combines strategic and hands-on work across secure network architecture, identity management and cloud security, with on-site presence at Bristol HQ at least 3 days per week and occasional travel.

Candidates must be eligible for SC clearance; due to sensitivity, applications are restricted to sole UK nationals.

Qualifications

• Experience with threat modelling and secure system design.
• Familiarity with compliance frameworks (NIST, ISO 27001, DefStan 05-139).
• Able to work with delivery teams to implement security controls.

Responsibilities

• Design, implement, and maintain secure systems and infrastructure.
• Assess risks and define security requirements for projects.
• Apply and validate security controls across networks, identities, and cloud.
• Collaborate with engineering teams to ensure resilience and compliance.

Skills

Threat modelling

Secure system design

Cloud security

Identity management

Tools

NIST framework

ISO 27001

DefStan 05-139

Job description

We’re building the UK's next generation engineering powerhouse, providing critical technology that strengthens national security and resilience.

We specialise in turning advances in sensing, AI, and communications into operational capability for the edge, where connectivity may be degraded or denied. Our work focuses on accelerating the deployment of technology, improving decision-making for frontline teams, and protecting people and critical assets in demanding environments.

Headquartered in Bristol, Rowden employs around 200 people and operates over 20,000 square feet of engineering and manufacturing facilities. We have a growing international footprint and are one of Europe’s fastest-growing engineering businesses.

About the role

As a Senior Cyber Security Engineer at Rowden, you’ll collaborate closely with the wider engineering team to design, implement, and maintain secure systems and infrastructure. You will be embedded within a delivery team(s) and work closely with the Technical Security Lead and external partners to assess risks, define security requirements, and ensure technical solutions are pragmatic, proportionate, and aligned with both business and customer needs.

Your focus will span both strategic and tactical aspects of security engineering. At a strategic level, you’ll contribute to high-level design and planning across areas such as secure network architecture, identity management, and cloud security. At a tactical level, you’ll be hands-on with implementation, working directly with systems, tools, and configurations to apply and validate security controls, troubleshoot issues, and support secure delivery. You’ll collaborate with the wider engineering community to ensure agreed controls are effectively embedded, and that all systems are resilient, compliant, and aligned with current security standards.

The ideal candidate will bring knowledge of threat modelling, secure system design, and compliance frameworks including NIST, ISO 27001, and DefStan 05-139. We understand that even experienced professionals may not have expertise across every aspect of the role. If you bring relevant experience, sound technical judgement, and a passion for delivering secure solutions, we encourage you to apply.

This role requires a minimum of 3 days per week on-site at our Bristol HQ with occasional travel to customer sites.

Candidates must be eligible for SC clearance. Due to the nature of this role and the sensitivity of the work involved, applications are restricted to sole UK nationals.

More information about security clearance is available here: https://www.gov.uk/government/publications/united-kingdom-security-vetting-clearance-levels