Senior Security Engineer - Cloud Infrastructure

Responsibilities

• About you:
• You understand cloud infrastructure security end-to-end, applying frameworks (CIS Benchmarks, NIST CSF, ISO 27001) within a regulated context.
• You think holistically about defence-in-depth, from network perimeter to workload protection.
• You effectively engage with platform, infrastructure, and engineering teams, clearly explaining the 'why' and impact of security controls.
• You advocate for security-as-code and automation, reducing manual processes and improving consistency.
• You promote a collaborative culture, share knowledge openly, and optimise your contributions for predictable delivery
• Experience and Qualifications
• Required
• 5+ years in security or infrastructure engineering with deep expertise in cloud security, ideally within FinTech, banking, or a similar regulated industry.
• Expert-level experience with AWS and/or GCP security services, including VPCs, security groups, IAM, and cloud-native security tools.
• Proven track record designing and implementing WAF solutions (AWS WAF, Cloud Armor, or similar) with custom detection rules.
• Strong experience designing network architectures with proper segmentation and isolation patterns.
• Extensive experience with Infrastructure as Code (Terraform preferred) and GitOps practices.
• Proficiency in scripting and automation (Python, Bash, or similar).
• Solid understanding of network security fundamentals: firewalls, routing, DNS, TLS, VPNs.
• Experience implementing or operating SIEM, logging,

Benefits

Additional Information

Ebury helps ambitious businesses unlock global growth, and we take the same approach with our people. We encourage innovation and movement, collaboration and problem-solving, and foster an environment where everyone can feel they belong, are valued, supported and empowered to succeed. If you're a collaborator who wants to help transform how businesses operate globally, get in touch - we'd love to discuss how Ebury can accelerate your career so you can shape the future. Senior Security Engineer - Cloud Infrastructure Hybrid (4 days in office) in Madrid Ebury is investing significantly in its cloud infrastructure security capabilities to ensure the trust and safety of our global financial services. As a Senior Security Engineer specialising in Cloud Infrastructure, you will own and evolve the security posture of our cloud environments across AWS and GCP, with a focus on network security, perimeter defence, and attack surface management. This hands-on role requires deep expertise in cloud-native security controls, network architecture, and defensive security operations. You will design, implement, and maintain security infrastructure that proactively detects and mitigates threats before they impact our business. You will work closely with platform, infrastructure, and security operations teams, embedding security best practices into our cloud foundations.

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