Senior Cloud Security Engineer: Payments Platform Lead

Remote Worker LTD.; United States; Hybrid; USD 150,000 - 190,000; Full time

Job summary

Form3 is seeking an experienced Senior Cloud Security Engineer on a 12-month fixed-term contract to deliver strategic security enhancements across our cloud-native payments platform. You will work with Platform Engineering and Security teams to design and implement practical improvements that strengthen how we build, deploy and operate critical payment infrastructure.

The role focuses on cloud platform security, software supply chain security, IAM, AI governance, cryptographic controls and

Qualifications

• Extensive experience designing and implementing cloud security solutions within large-scale cloud-native environments.
• Strong hands-on experience securing public cloud platforms (AWS preferred).
• 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 understanding of software supply chain security, including dependency management, artefact signing, provenance and vulnerability management.
• Experience implementing least-privilege access models and RBAC.
• Knowledge of security monitoring, risk assessment and security governance.
• Experience working within highly regulated or business-critical production environments.
• Excellent stakeholder management and communication skills, with the ability to influence engineering teams.
• Strong technical documentation and design skills.

Responsibilities

• 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.
• Strengthen CI/CD pipeline security through secure build processes, automated security testing, deployment governance and artefact integrity.
• Improve production access security, including RBAC, least-privilege implementation, deployment tooling and operational processes.
• Enhance software supply chain security through dependency management, container image scanning, provenance, signing and vulnerability remediation.
• Contribute to the secure adoption and governance of AI-enabled engineering capabilities, including controls for data protection, auditability and operational resilience.
• Provide technical leadership and guidance on cloud security architecture and secure engineering practices.
• Produce high-quality technical documentation, including solution designs, implementation plans, operational procedures and security evidence.
• Collaborate closely with engineering, platform and security teams to deliver maintainable, production-ready security improvements.
• Ensure all deliverables align with operational resilience requirements, regulatory obligations and internal security standards.
• Deliver changes using structured, low-risk change management practices while maintaining service availability.

Skills

Cloud security design

AWS security

IAM

CI/CD security

Supply chain security

Least privilege

RBAC

Security governance

Regulatory compliance

Stakeholder management

Technical documentation

Tools

AWS

Kubernetes

Terraform

CI/CD tooling

Container security tooling

IAM

Software Supply Chain Security

Security monitoring platforms

AI governance controls

Job description

Form3 is seeking an experienced Senior Cloud Security Engineer on a 12-month fixed-term contract to deliver strategic security enhancements across our cloud-native payments platform. You will work with Platform Engineering and Security teams to design and implement practical improvements that strengthen how we build, deploy and operate critical payment infrastructure.

The role focuses on cloud platform security, software supply chain security, IAM, AI governance, cryptographic controls and