Kubernetes Engineer (Mid–Senior) | DoD Platform Engineering at Rackner

<p><strong>Kubernetes Engineer (Mid–Senior) | DoD Platform Engineering</strong></p> <p>Ability to Obtain a DoD Secret Clearance<br><br><strong>Build Secure Kubernetes Platforms That Engineering Teams Depend On</strong><br>Rackner is hiring Kubernetes Engineers across Mid and Senior levels to help design, automate, secure, and operate cloud-native platforms supporting a mission-focused DoD environment.<br><br>You’ll work hands-on across Kubernetes, cloud infrastructure, GitOps, service mesh, networking, security, and Infrastructure as Code—building reliable platform capabilities that development teams can use at scale.<br><br>We’re hiring multiple engineers and will align level based on the scope, technical depth, and ownership demonstrated in your work, rather than title alone.<br><br><strong>What You’ll Lead and Build<br></strong></p> <ul> <li>Design, build, and operate secure, resilient Kubernetes platforms</li> <li>Automate infrastructure and platform configuration using Terraform, Ansible, Helm, and Infrastructure as Code</li> <li>Build and improve GitOps and CI/CD workflows</li> <li>Implement Kubernetes networking, RBAC, security controls, and service-to-service communication</li> <li>Engineer and support Istio/service-mesh capabilities</li> <li>Build reusable platform components, including Helm charts, Operators, Controllers, CRDs, and Admission Controllers</li> <li>Integrate Kubernetes with cloud services, container registries, and delivery pipelines</li> <li>Troubleshoot complex issues across Kubernetes, Linux, networking, containers, and cloud infrastructure</li> <li>Strengthen platform reliability, security, performance, and recovery</li> <li>Partner with application, cloud, security, and architecture teams to turn requirements into working platform capabilities</li> </ul> <p>Senior engineers may also guide larger technical decisions, lead implementation efforts, and help other engineers grow while remaining hands-on.<br><br><strong>What You’ll Bring</strong></p> <ul> <li>Hands-on background building, operating, or supporting Kubernetes environments</li> <li>Strong knowledge of Linux, networking, containers, and Kubernetes architecture</li> <li>Proficiency with Helm and Infrastructure as Code</li> <li>Familiarity with cloud platforms such as AWS/EKS, Azure/AKS, GCP/GKE, OCI, or similar</li> <li>Practical use of GitOps, CI/CD, and automated deployment workflows</li> <li>Knowledge of Kubernetes security, access controls, and RBAC</li> <li>Ability to independently diagnose and solve issues across multiple layers of a platform</li> <li>Ability to obtain and maintain a DoD Secret clearance</li> </ul> <p>For Mid-level engineers, we’re generally looking for roughly 3–5 years of relevant engineering experience. Senior engineers will typically bring 5–7+ years with broader platform ownership, architecture, or technical leadership.<br><br>We care most about what you have built, operated, improved, and solved.<br><br><strong>Standout Background</strong><br>Additional value may come from:</p> <ul> <li>Certified Kubernetes Administrator (CKA)</li> <li>Deep experience with Istio or service mesh</li> <li>Custom Kubernetes Operators, Controllers, CRDs, or Admission Controllers</li> <li>DoD Enterprise DevSecOps Reference Design experience</li> <li>Software development, scripting, or platform automation background</li> <li>Experience supporting production platforms with active end users</li> <li>DoD, federal, regulated, or security-focused engineering environments</li> </ul> <p><strong>Why Rackner</strong><br>At Rackner, you’ll work on technology tied directly to complex federal missions while remaining close to the engineering.<br><br>This role offers the opportunity to build rather than simply maintain: own meaningful platform capabilities, solve problems across cloud and security boundaries, influence technical decisions, and expand your scope without stepping away from hands-on engineering.<br><br>Our teams work across cloud, DevSecOps, AI/ML, data, and modern software engineering, creating opportunities to broaden your technical perspective as programs and challenges evolve.<br><br><strong>Benefits &amp; Perks</strong></p> <ul> <li>Company-supported certifications aligned with current and future program work</li> <li>Career-development and leadership opportunities</li> <li>401(k) with 100% match up to 6%</li> <li>Medical, dental, vision, life, and disability coverage</li> <li>Generous PTO and paid holidays</li> <li>Home-office equipment and remote-work support</li> <li>Fitness and wellness reimbursement</li> <li>Weekly pay and team events</li> </ul> <p><strong>Equal Opportunity</strong><br>Use the same standard Rackner Equal Opportunity statement already used on the Senior Data Engineer posting.</p>