Senior Platform Security Engineer - AI Resilience & Security Enhancements (Contract)

The role

This Senior Platform Security Engineer will build security controls into the engineering platform and developer workflows. You will work on secure autonomous agent execution, CI/CD, code security, production access controls, and software supply chain security.

What you will do

• Design, evaluate and implement controls for secure autonomous agent execution
• Evaluate and implement ways to detect vulnerable or unsafe code changes before merge
• Explore existing security tooling and AI-assisted approaches to code security
• Strengthen production access by implementing secure privileged-access controls
• Adapt engineering tooling and workflows to support safer production access
• Strengthen CI/CD and software supply chain security
• Build security automation and platform controls
• Work directly with Form3 engineers on technical design, prototyping and implementation
• Contribute to wider security engineering work
• Produce clear technical documentation and handover material

Required qualifications

• Strong hands-on experience in Platform Engineering, DevOps, SRE, DevSecOps or Platform Security
• Experience implementing security controls yourself
• Strong understanding of CI/CD and modern software delivery
• Good understanding of software supply chain security
• Good understanding of IAM, RBAC and least privilege
• Experience with container security and some practical Kubernetes knowledge
• Comfortable writing automation or tooling in a programming language
• Experience working with engineers to deliver practical security improvements into production systems
• Good communication and documentation skills

Nice to have

• Terraform or other Infrastructure as Code experience
• Experience with AWS, GCP or other public cloud platforms
• Security automation or policy-as-code experience
• Experience with container/runtime isolation or sandboxing
• Experience securing AI agents or other AI-enabled engineering tools
• Experience using LLMs for security analysis or automation
• Threat modelling experience
• Knowledge of mTLS, PKI, cryptography or key management
• Experience in regulated, financial or other business-critical environments
• Experience with Go or Python

About the company

Form3 is revolutionising the world of payments with a cloud-native, multi-cloud platform.