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 ISO* in application design and deployment
Promote a security?first culture within development teams, including awareness and best practices
Maintain awareness of emerging risks and technologies, including basic AI/LLM?related application risks,



and support translation into practical controls where required
Produce and maintain architecture artefacts, standards and guidance documentation
Must Haves
What we're looking for
5+ years of experience in information security, with a strong focus on application security and DevSecOps
Strong understanding of secure software development practices and common application security risks (e.g. OWASP Top 10)
Hands?on experience working with or integrating DevSecOps tooling within CI/CD environments (e.g. GitLab pipelines)
Experience with application security testing tools and practices, including: SAST, DAST, SCA / dependency scanning and Secrets / credentials scanning.
Experience contributing to security design reviews for applications and APIs
Experience supporting or participating in penetration testing activities, including remediation tracking
Strong understanding of modern application architectures (e.g. APIs, microservices, cloud?native applications)
Knowledge of authentication and session management concepts within applications
Experience performing or supporting risk assessments aligned to recognised frameworks
Ability to translate technical vulnerabilities into business?aligned risk and remediation actions
Strong collaboration skills with engineering and development teams
Strong communication skills (technical and non?technical)
Might Haves
Experience with GitLab security tooling and pipeline integrations
Familiarity with cloud?native application security (Azure / GCP environments)
Exposure to API security controls and testing approaches
Basic understanding of AI/LLM application risks, such as prompt injection or data exposure
E

📌 Security Architect (Barcelona)
🏢 Colt Technology Services
📍 Barcelona