Platform Engineer

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.