What we're looking for
You'll own detection engineering and help shape how ARQ detects and responds to threats. From bringing new log sources into ARQ’s SIEM to writing, testing and tuning detections, you'll be responsible for making sure our coverage works when it matters.
We're looking for someone who combines hands-on detection experience with an engineering mindset. You'll work directly with our CISO and a small global security team, with the autonomy to prioritise gaps and build practical solutions. Automation is central to how we work: you'll build and run AI agents that support rule development, validation, alert triage and threat hunting, with you reviewing and approving their output.
What you'll need
- 5+ years in security, including 3+ years writing and owning detections in production.
- Hands-on experience with a cloud SIEM and its query language, such as Datadog Cloud SIEM, Splunk, Elastic, Google SecOps.
- Deep knowledge of AWS logs, particularly CloudTrail, IAM and IAM Identity Center, alongside experience with SaaS audit logs such as Google Workspace, GitHub, GitLab or Okta.
- Experience managing detections as code using Terraform, Git, CI pipelines and code review.
- Practical experience mapping detections to MITRE ATT&CK and testing rules by reproducing attacks with tools such as Atomic Red Team or Stratus Red Team.
- Python skills for automation, log analysis and security tooling, with a record of shipping automation or AI agents that others use.
- Hands-on incident response experience, from investigating alerts to documenting findings and remediation.
- The ability to work independently, prioritise effectively and own outcomes in a small team without a dedicated SOC behind you.
- Strong written and verbal communication in English.