Cloud Security Engineer: AI-First Cloud Defense

intercom; Greater London; Hybrid; GBP 90,000 - 130,000; Full time

Job summary

Fin is transforming customer service through AI, helping businesses deliver fast, accurate, and reliable support at scale. The Cloud Security team protects Fin's platforms, partnering with engineering to secure AWS environments and respond to incidents.

We’re seeking a Cloud Security Engineer in London to design secure cloud architectures, build protective and detective controls, and advance our AI-first security initiatives while balancing speed and risk in a hybrid work model.

Qualifications

• Proven experience in cloud security, security engineering, detection engineering, or a closely related field.
• Strong experience securing and operating production AWS environments.
• Deep understanding of cloud security principles, modern attack techniques, and security best practices.
• Experience building or operating detection, monitoring, or threat detection capabilities.
• Hands-on experience investigating security incidents, leading technical investigations, and driving remediation efforts.
• Experience implementing security controls across cloud platforms and production environments.
• Strong programming skills and experience building automation, tooling, or operational workflows.
• Experience working with infrastructure-as-code practices and modern cloud-native technologies.
• Comfortable using modern AI-assisted development tools to improve productivity and engineering effectiveness.
• Ability to communicate security concepts clearly and collaborate effectively with engineering teams.
• A pragmatic approach to balancing security, customer impact, and engineering velocity.

Responsibilities

• Design and implement secure cloud architectures across our AWS environments.
• Build and maintain protective and detective controls that improve visibility into threats across our cloud environments.
• Develop detection engineering capabilities that identify attacker behaviour and reduce time to detection and response.
• Lead cloud security investigations and incident response activities in partnership with engineering teams.
• Participate in a shared on-call rotation and help coordinate containment, remediation, and recovery efforts during security incidents.
• Build automation that improves the scalability, reliability, and effectiveness of security controls.
• Partner with infrastructure teams to embed security into cloud platforms, infrastructure-as-code workflows, and engineering practices.
• Develop and improve cloud security standards, guidance, and best practices across Fin.
• Drive security initiatives from problem definition through design, implementation, and measurable outcomes.
• Assess emerging threats to cloud environments and help evolve our defensive capabilities.
• Help shape Fin's AI-first approach to security, including AI-assisted detection, automated investigations, continuous monitoring, and emerging defensive capabilities.
• Support the secure adoption of AI-assisted software development tools and engineering workflows.

Skills

Cloud security

AWS security

Detection engineering

Incident response

Automation

IaC

AI-assisted development

Security controls

Communication

Security architecture

Tools

AWS

Terraform

CI/CD

Job description

Fin is transforming customer service through AI, helping businesses deliver fast, accurate, and reliable support at scale. The Cloud Security team protects Fin's platforms, partnering with engineering to secure AWS environments and respond to incidents.

We’re seeking a Cloud Security Engineer in London to design secure cloud architectures, build protective and detective controls, and advance our AI-first security initiatives while balancing speed and risk in a hybrid work model.