security engineer in cloud security

Fin is an AI Customer Agent company that helps businesses provide customer experiences through AI-powered, always-on support. Its Fin product resolves complex customer issues across service, sales, and ecommerce channels, while integrating with the Intercom help desk. Founded in 2011, Fin serves nearly 30,000 global businesses.

• Design and implement secure cloud architectures across AWS environments;
• Build and maintain protective and detective controls for cloud threat visibility;
• Develop detection engineering capabilities to identify attacker behaviour and reduce detection and response times;
• Lead cloud security investigations and incident response with engineering teams;
• Participate in a shared on-call rotation and coordinate containment, remediation, and recovery during security incidents;
• Build automation to improve 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;
• Drive security initiatives from problem definition through implementation and measurable outcomes;
• Assess emerging cloud threats and evolve defensive capabilities;
• Shape Fin's AI-first security approach, 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.

• 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 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;
• Nice to have: experience building detection engineering, threat hunting, or security operations capabilities at scale; experience with cloud-native security platforms, CNAPP technologies, or large-scale cloud security monitoring; experience applying AI to detection, response, threat analysis, or security operations workflows; familiarity with AWS networking, identity, and cloud security patterns; experience working across large-scale SaaS environments and high-growth companies.

• Competitive salary and equity in a fast-growing start-up;
• Lunch provided every weekday, snacks, and a fully stocked kitchen;
• Regular compensation reviews;
• Unlimited access to Claude Code and best-in-class AI tools;
• Pension scheme with matching up to 4%;
• Life assurance and comprehensive health and dental insurance for employees and dependents;
• Flexible paid time off policy;
• Paid maternity leave and six weeks of paternity leave;
• Cycle-to-Work Scheme and secure bike storage;
• MacBooks are standard, with Windows available for certain roles;
• Employees are expected to work in the office at least three days per week.