Senior Systems Engineer - Application Security

Reference: ynvat8wkr2sb5nlpcirn

We are seeking a Senior Systems Engineer – Application Security to strengthen the security, reliability, and performance of critical applications and supporting infrastructure. In this role, you will work closely with software engineering, platform, operations, and risk teams to embed security throughout the application lifecycle, from design and development through deployment and ongoing maintenance. You will provide technical leadership on secure architecture, systems hardening, vulnerability management, identity and access controls, and cloud security practices.

Your responsibilities will include reviewing application and infrastructure designs, identifying security risks, and recommending practical, scalable improvements. You will develop and maintain security standards, controls, and engineering patterns; support threat modelling and security assessments; and help integrate automated security testing into CI/CD pipelines. You will investigate vulnerabilities and security incidents, coordinate remediation activities, and contribute to root-cause analysis and preventative measures. The role will also involve monitoring security telemetry, improving detection and response capabilities, supporting compliance requirements, and producing clear technical documentation for engineering and leadership audiences.

To succeed, you will have substantial experience in systems engineering, application security, DevSecOps, or a related discipline, together with a strong understanding of secure software development and modern infrastructure technologies. You should be confident working with cloud platforms, containers, APIs, operating systems, networking, databases, and infrastructure-as-code tools. Practical knowledge of vulnerability scanning, source code analysis, penetration testing principles, security information and event management, and identity technologies is highly desirable. Strong scripting or programming skills, excellent problem-solving ability, and experience influencing technical teams without direct authority are essential. Relevant professional certifications in security, cloud, or systems engineering would be advantageous. You will be expected to communicate complex risks clearly, balance security with usability and delivery objectives, and promote a collaborative, security-conscious engineering culture.

COMPETITIVE SALARY
Added 24/09/2026
Reference: ynvat8wkr2sb5nlpcirn

Senior Systems Engineer - Application Security

London, England, United Kingdom Permanent Application Security

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