Platform Engineer - Certificate Automation

Location: Remote – UK Contract: 12 months Day Rate: Up to £475 PER/DAY Role Overview We are looking for an experienced Platform Engineer to join a security-focused engineering programme, with responsibility for delivering automation across the full enterprise certificate lifecycle. You will play a hands-on role in implementing and improving processes for certificate issuance, renewal, rotation, revocation and governance across cloud, infrastructure and application environments. This is a delivery-focused position rather than a solution architecture role. You will be expected to work directly with platforms, infrastructure and application teams to implement robust, scalable automation within a fast-moving and security-critical environment. Key Responsibilities Develop and implement automated certificate rotation processes across cloud, infrastructure and application environments.Automate certificate renewal workflows and support the implementation of certificate revocation processes.Integrate certificate lifecycle management capabilities with cloud platforms, services and enterprise applications.Make application-level code changes where necessary to enable or improve certificate automation.Manage and automate certificate operations using native AWS and GCP certificate management services.Build reusable and scalable infrastructure automation using Terraform and Ansible.Support certificate management across public and private cloud environments and enterprise platforms.Work closely with engineering and security teams to improve the reliability, consistency and security of certificate operations.Create and maintain operational runbooks, technical documentation and reusable automation components.Troubleshoot certificate-related issues and contribute to the continuous improvement of lifecycle management processes. Essential Experience & Technical Skills 5+ years' commercial experience in hands-on platform, infrastructure or cloud engineering roles.Strong practical knowledge of Certificate Lifecycle Management (CLM) and Public Key Infrastructure (PKI).Proven experience working with AWS and/or GCP, including their native certificate management capabilities.Strong hands-on experience with Kubernetes and Linux.Extensive experience using Terraform and Ansible to automate infrastructure and operational processes.Strong Python development and scripting capabilities.Experience implementing security-focused infrastructure and platform automation.Demonstrable ability to take requirements through to hands-on implementation and production delivery.Comfortable working in environments where security, reliability and operational resilience are critical.