Security Architect - DevSecOps + Application Security

Colt provides network, voice and data centre services to thousands of businesses around the world, allowing them to focus on delivering their business goals instead of the underlying infrastructure. Why we need this role We are looking for a Security Architect specialising in Application Security and DevSecOps to join the Security and Resilience – Security Architecture team. This role will act as a subject matter expert for secure software development and DevSecOps practices, supporting the integration of security controls into Colt’s development pipelines and ensuring applications are secure by design and by default. The successful candidate will work closely with Engineering, DevOps, Cloud, SOC and Risk teams to embed security throughout the software development lifecycle, ensuring that Colt’s applications and services are designed, built and tested with security as a core requirement. The role combines: Application security architecture and design DevSecOps pipeline integration and tooling Security assurance and governance across internally developed applications You will play an important role in supporting: Secure software development practices across Colt Security integration into CI/CD pipelines (GitLab) Reduction of vulnerabilities through automated scanning and testing Assurance of internet-facing applications through structured penetration testing activities What you will do Provide security architecture expertise for application security and DevSecOps, supporting standards and best practices across the software development lifecycle Contribute to the target architecture for secure software development, aligned to Colt’s Secure by Design principles Support the integration of security controls into CI/CD pipelines (GitLab), including automated testing and policy enforcement Design and implement application security controls, including: Static Application Security Testing (SAST) Dynamic Application Security Testing (DAST) Software Composition Analysis (SCA) / dependency scanning Secrets and credentials scanning Work with engineering teams to ensure consistent adoption of DevSecOps practices and secure coding approaches Support security architecture reviews and assurance activities for internally developed applications and services Identify and help reduce risks related to application vulnerabilities, insecure coding practices and exposed credentials Support the coordination and execution of third-party penetration testing of Colt’s internet-facing applications Assist in defining test scope, tracking execution and ensuring remediation of findings is properly managed Provide guidance to engineering teams on remediation and prioritisation of vulnerabilities Contribute to the development and maintenance of secure coding standards and architectural patterns Ensure alignment with regulatory requirements such as TSA, DORA and ISO27001 in application design and…