Site Reliability Engineer

Brooksource is building a Cyber Threat Intelligence program that aims to redefine how intelligence at scale works inside a modern enterprise. They are seeking a Site Reliability Engineer who will focus on building a reliable and secure sensor platform while applying security best practices and improving observability.

Responsibilities:

• Build and refine Docker containers for our internal CTI sensors
• Use Ansible to make deployments consistent, automated, and repeatable across distributed Linux systems
• Own and evolve our GitLab CI/CD pipelines: builds, registries, deployment workflows, and everything in between
• Review the current state of the platform and quickly identify what needs to happen next to make it stable, scalable, and production-ready
• Improve observability, uptime, and the general 'it just works' experience of our sensor infrastructure
• Help guide the evolution toward orchestration (Nomad, Kubernetes, etc.)
• Apply security best practices across OS, containers, Kubernetes, cloud, and network layers
• Lead ongoing hardening: patching, configuration baselines, secrets management, and enforcing least privilege
• Work closely with CTI and Security Engineering to ensure the platform is secure by default, not secure by cleanup
• Integrate security controls directly into CI/CD (SAST, DAST, dependency scanning, container scanning)
• Improve IAM roles, service accounts, and access boundaries so the platform stays tight without getting in the way

Requirements:

• Strong experience building and optimizing Docker images
• Solid Ansible skills for automated deployments and config management
• Hands-on GitLab CI/CD experience
• Linux systems knowledge and networking fundamentals
• Practical experience with infrastructure hardening
• Ability to look at an evolving environment and confidently say: 'Here's what we do next.'
• Comfortable working in a security-forward environment with CTI analysts and engineers
• Experience with Kubernetes, Nomad, or other orchestrators
• Observability tooling (Prometheus, Grafana, ELK/EFK)
• Familiarity with secrets management tools
• Experience with sensors, agents, or distributed telemetry systems
• Python or Go scripting experience