Senior Security Engineer As a senior member of a small, high-impact security team, you will shape strategy, drive engineering execution, and be a trusted advisor who keeps our customers' data and our infrastructure safe. Focus areas include: Own the end-to-end security engineering program for multiregion bare-metal and cloud environments, covering threat intel, detection & response, vulnerability management and hardening of Kubernetes/SLURM, Linux and network fabrics. Design and automate security controls and telemetry pipelines (SIEM, SOAR, EDR) to operate at multi-terabit scale, integrating with Terraform-based IaC and GPU scheduling stacks. Lead incident response, threat hunting and post-mortems; continuously tune detections and drive root-cause fixes with platform teams. Champion a zero-trust architecture, including IAM, SSO, secrets management and least-privilege policies. Partner with Compliance to meet SOC 2, ISO 27001 and customer requirements. Build a security culture: embedding security reviews into CI/CD and product lifecycles. Mentor engineers, influence roadmap trade-offs and report risk posture to executive leadership. About you: 8+ years in information or infrastructure security with at least 3 years securing large-scale cloud or HPC environments. Expert in container and orchestration security (Kubernetes, container-d runtime), Linux internals and network segmentation. Proven track record implementing SIEM/EDR tooling, crafting detections and running incident response aligned to MITRE ATT&CK. Strong scripting or coding skills in Python, Go or Bash; comfortable automating via Terraform, Helm and GitOps workflows. Deep understanding of IAM, PKI, zero-trust networking and modern auth protocols (OIDC, SAML). Familiar with SOC 2, ISO 27001, NIST 800-53 and cloud-shared-responsibility models; able to translate controls into engineering tasks. Nice to haves: Experience with GPU/AI infrastructure, high-performance rendering or energy-efficient edge data centers. Background in adversary tracking, threat-intel feed curation and eBPF-based telemetry. Contributions to open-source security projects or published CVEs. Relevant certs such as CISSP, OSCP, GCPN or KCNA. Benefits: Competitive total compensation package (cash + equity) Retirement or pension plan, in line with local norms Health, dental, and vision insurance Generous PTO policy, in line with local norms Fluidstack is an Equal Employment Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability and protected veterans' status, or any other characteristic protected by law. Fluidstack will consider for employment qualified applicants with arrest and conviction records pursuant to applicable law.