Senior DevSecOps​/Platform Security Engineer; AWS + Kubernetes

About Defcon AI

RESILIENCE IN THE FACE OF DISRUPTION. DEFCON AI is an insights company that leverages artificial intelligence, mathematical optimization, data analytics, and software engineering for resilient optimization of complex systems.

In today's dynamically changing world, DEFCON AI's technology aligns outcomes with operational goals, better decision making, and empowers customers to anticipate, assess, and mitigate the impacts of disruptions.

We're hiring a senior, hands‑on Dev Sec Ops /Platform Security Engineer to build and operate production security controls across our AWS and Kubernetes platform. You’ll design and implement guardrails that make secure delivery the default—covering CI/CD security automation, software supply‑chain controls, and Kubernetes policy enforcement—while partnering closely with Platform/SRE and Security/GRC.

• CI/CD security automation and developer‑facing security workflows (SAST/SCA, secrets scanning, IaC scanning, container scanning).
• Software supply chain controls (SBOM, artifact/image signing and verification, provenance and promotion workflows).
• Kubernetes policy enforcement and admission controls (policy‑as‑code) that encode platform security guardrails.
• Co‑own AWS security guardrails with Platform/SRE (IAM patterns, logging and detection, network and encryption baselines).
• Partner with Security/GRC on control interpretation and evidence needs; implements controls in engineering systems and pipelines.

• Design, build, and maintain CI/CD security controls that scale across repositories and teams (reusable pipeline components, templates, and standards).
• Implement Kubernetes security architecture and guardrails (RBAC hardening, workload security baselines, admission policies, network policies, and safe multi‑tenant patterns as applicable).
• Improve container security end‑to‑end: base‑image strategy, vulnerability scanning, registry controls, image signing, and promotion workflows.
• Operationalize vulnerability management with risk‑based prioritization, measurable remediation SLAs, and dashboards/metrics (MTTR, exposure trends, top recurring root causes).
• Drive developer enablement: clear documentation, lightweight design reviews/threat modeling for high‑impact changes, office hours, and high‑signal guidance embedded in tooling.

• You’ll ship code and infrastructure, not just recommendations.
• You’ll own reliability and outcomes for the controls you build.
• You’ll respond to incidents and on‑call rotation related to platform security controls and pipeline reliability (scope aligned with Platform/SRE).

This role supports delivery into regulated environments and works closely with Security/GRC to implement engineering‑owned controls and produce audit‑ready evidence. You’ll help translate requirements (for example, NIST SP 800‑171 and CMMC expectations) into practical, automated guardrails within CI/CD, AWS, and Kubernetes.

• 5+ years of experience in Dev Ops/SRE/Platform Engineering and/or Security Engineering with a strong automation and delivery focus.
• Hands‑on experience securing AWS environments: IAM (least privilege), network controls, encryption (KMS), and centralized logging/detection.
• Strong Kubernetes security experience (EKS or equivalent): RBAC, workload hardening, and policy enforcement via admission control.
• Experience integrating security into CI/CD pipelines and developer workflows (SAST, SCA, secrets scanning, container scanning, IaC scanning).
• Infrastructure as Code proficiency (Terraform, Cloud Formation, CDK, or Pulumi) and ability to embed guardrails into IaC workflows.
• Proficiency scripting/coding (e.g., Python, Go, Bash) to build integrations, automations, and internal tooling.
• Able to communicate risk and tradeoffs clearly and pragmatically to engineers; improves signal‑to‑noise rather than adding friction.

• Experience with Kubernetes policy‑as‑code tooling (OPA/Gatekeeper, Kyverno) and secure workload identity patterns (OIDC/IRSA).
• Experience with software supply chain security: SBOM generation and management,…