Security Design Engineer (App Sec)
We are seeking a Security Design Engineer (App Sec) to strengthen application security across the software development lifecycle. In this role, you will work closely with engineering, architecture, product, and operations teams to design secure, resilient applications and services. You will help embed security into development practices from initial concept through deployment and ongoing maintenance, while providing practical guidance that enables teams to deliver at pace without compromising protection.
Your responsibilities will include conducting threat modelling, security architecture reviews, and risk assessments for applications, APIs, cloud services, and supporting infrastructure. You will define security requirements and design patterns, review technical proposals, and recommend appropriate controls for identity, access management, data protection, secrets management, logging, monitoring, and secure communications. You will support secure coding initiatives, assist with vulnerability assessment and remediation, and contribute to the development of security standards, reusable guidance, and automated checks within CI/CD pipelines. You will also help investigate security issues, assess their impact, and collaborate with relevant teams to track corrective actions through to completion.
The successful candidate will have professional experience in application security, security engineering, software development, or a related discipline, with a strong understanding of secure software development principles and common application vulnerabilities. Experience with threat modelling methodologies, cloud security, APIs, containers, DevSecOps tooling, and modern authentication protocols is highly desirable. You should be comfortable interpreting technical and business risks, communicating clearly with both technical and non-technical audiences, and influencing teams through collaboration rather than authority. Familiarity with recognised security frameworks and standards, such as OWASP guidance, NIST, or ISO 27001, would be advantageous. A proactive, analytical approach and a commitment to continuous learning are essential.
Security Design Engineer (App Sec)
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