Senior Cloud Security Engineer (AI Resilience & Security Enhancements (Contract))

Join Form3 as a Senior Cloud Security Engineer on a contract basis. You will be responsible for delivering a strategic program of security enhancements across our cloud-native payments platform. Your focus will be on improving cloud security, operational resilience, and governance. You will work closely with our Platform Engineering and Security teams to design and implement practical security improvements. This role requires extensive experience in cloud security architecture, identity and access management, workload protection, and infrastructure security.

• Assess the current cloud security posture across Form3 environments, identifying risks, control gaps and opportunities for improvement.
• Design and implement scalable cloud security controls that improve the resilience and security of our cloud-native platform.
• Enhance perimeter security controls across cloud infrastructure and strengthen CI/CD pipeline security through secure build processes.
• Experience working within highly regulated or business-critical production environments
• Knowledge of security monitoring, risk assessment and security governance
• Excellent stakeholder management and communication skills, with the ability to influence engineering teams
• Experience implementing least-privilege access models and RBAC
• Expertise in cloud security architecture, identity and access management, workload protection and infrastructure security
• Experience securing CI/CD pipelines and modern software delivery practices
• Strong hands-on experience securing public cloud platforms (AWS preferred)
• Strong technical documentation and design skills
• Extensive experience designing and implementing cloud security solutions within large-scale cloud-native environments
• Strong understanding of software supply chain security, including dependency management, artefact signing, provenance and vulnerability management
• Experience with Infrastructure as Code and policy-as-code tooling
• Knowledge of cryptographic controls and key management
• Familiarity with payment platforms or financial services environments
• Relevant cloud or security certifications (AWS Security Specialty, CISSP, CCSP or similar)
• Understanding of operational resilience frameworks and regulatory requirements affecting critical financial infrastructure
• Experience implementing security controls for AI or machine learning platforms
• All contractors start their first day in our office to collect the equipment needed to work remotely