Site Reliability Engineer - Security

Location: Sydney, Australia

Department: Systems & Infrastructure

Platform Engineering at IMC builds and runs the core platforms that power our business. This Site Reliability Engineer role within Platform Engineering is focused on security projects: embedding security into system design and infrastructure to protect and accelerate our rapidly evolving technology landscape. As a bridge between application development and production operations, Platform Engineering enables and applies security by design: embedding controls, guardrails, and secure defaults directly into our platforms and infrastructure. You will implement security into IMC systems in ways that reduce friction and raise our baseline of safety and reliability.

We are hiring a Site Reliability Engineer within Platform Engineering to drive security-focused initiatives across IMC. You will collaborate closely with most technology teams, operate with high autonomy, and take ownership and responsibility for outcomes: delivering high-impact improvements to source control, CI/CD, observability, and the secure foundations our trading platforms rely on in a rapidly-changing, cutting-edge environment.

Your Core Responsibilities

• Write and maintain code to extend, integrate, and improve the services we support - from custom plugins and API integrations to internal tooling and automation frameworks
• Partner with development and engineering teams to make the secure path the easy path by providing tooling and guidance aligned with business objectives, fostering collaboration instead of friction
• Incident response: interpret threat intelligence in context, investigate and resolve software supply chain security incidents promptly, supporting our Global Operations in a ‘follow the sun’ model
• Both use AI to provide innovative tools and protect against AI-driven security risks
• Maintain and support our central secret management service, ensuring optimal adoption across scenarios and workflows while following security best practices
• Support and innovate identity architecture at scale for users, services, and AI agents. Implement consistent authentication and authorisation across system constraints
• Manage large-scale security projects across technologies and teams

Your Skills and Experience

• 3+ years of work experience in a relevant role
• Bachelor's Degree in Computer Engineering, Computer Science or equivalent
• Programming experience in Python; Shell scripting is a plus.
• Hands-on experience with Linux systems and container orchestration tools, including Kubernetes and Docker.
• Experience with CI/CD tools (Jenkins, GitLab CI, TeamCity) and securing pipelines: DevSecOps practices, safe artifact ingestion, and software supply chain security.
• Expertise in OIDC/OAuth2.0 and experience with IAM architecture, including implementation of authentication and authorization in complex full-stack systems
• Experience with secret management tools (preferably HashiCorp Vault); maintaining similar centralised security services is a plus