Rackner

Application Engineer

• Conduct and support static and dynamic application-security testing.
• Use and support automated security scanning with Fortify, X-Ray, OWASP ZAP, and related tools.
• Review findings, identify actionable vulnerabilities, and help distinguish meaningful risks from false positives.
• Work with software engineers to understand root causes, support remediation, and verify that fixes address identified vulnerabilities.
• Help integrate security testing into secure CI/CD and Git-based development workflows.
• Strengthen software supply-chain security throughout the development and delivery process.
• Apply secure software-development and cyber-resilience practices in an environment using GitLab, Artifactory, OpenShift, and Kubernetes.
• Contribute to technical reviews, code-review findings, security-remediation reports, and software testing.
• Help ensure software meets applicable functional, coding, and security requirements before release.

Application Security Engineer – Secure Mission Systems

Engineer

• Build, prototype, test, and refine software and platform solutions for defense-relevant use cases
• Contribute to internal R&D efforts from concept through demonstration and follow-on improvement
• Develop, configure, integrate, and validate prototype capabilities across cloud-native or containerized environments
• Support technical demos, R&D events, solution walkthroughs, and customer or mission-focused engagements
• Translate user, customer, and stakeholder feedback into clear technical requirements and next-step recommendations
• Work closely with engineers and technical leadership to evaluate tradeoffs, troubleshoot issues, and improve system behavior
• Bridge operational needs and software implementation by helping teams understand what users need and what is technically feasible
• Test APIs, services, workflows, integrations, and deployment patterns in modern software environments
• Prepare demo materials, technical documentation, briefing content, and post-event feedback summaries
• Communicate technical concepts clearly to engineering teams, program stakeholders, customers, and mission users
• Represent Rackner’s R&D work with professionalism, curiosity, and technical credibility

R&D Engineer – Mission Solutions

Backend Engineer

• The Kubernetes SME will work closely with the Infrastructure as Code and Site Reliability Engineer SMEs to design, build, and update platform capabilities using Kubernetes native services adhering to Cloud Native Computing Foundation (CNCF) principles.
• The Kubernetes SME will ensure industry best practices, along with the DoD CIO DevSecOps Reference Design, and a loosely coupled microservices-based architecture.
• Work to further develop, deliver, field, secure and maintain Unified Platform’s Kubernetes-based DevSecOps platform.

Senior Kubernetes Engineer – Secret Eligible

DevOps Engineer

• Build DevSecOps platforms which are used by a variety of mission application owners
• Create and update Kubernetes clusters using Terraform
• Deploy applications to Kubernetes clusters by writing and modifying Helm charts
• Become comfortable getting exposed to and learning different Kubernetes distributions (RKE2, OpenShift, Tanzu, etc)
• Self teach and work with custom operators and CRDs in Kubernetes as needed
• Use automation best practices, such as IaC and GitOps, for repeatability and fast provisioning of environments
• Ensure platform and pipelines are compliant with DoD cybersecurity policies (NIST 800-53/RMF, STIGs)
• Work with the Cybersecurity team by implementing industry best practices for system hardening and configuration management

DevSecOps, Kubernetes SME

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Senior Full Stack Software Engineer, Kubernetes, Python, React, Go

Full-stack Engineer

• Rackner is looking for a Software Engineer to develop and deliver first class solutions within a DevSecOps environment using latest cloud-native technologies to architect and implement containerized applications, CI/CD pipelines, and Kubernetes platforms using best practices and leading technologies with a Secret clearance or eligibility to obtain one.
• As part of an Agile team, use DevSecOps best practices to rapidly develop and deliver first class solutions for a DoD customer.
• Develop software using leading languages and frameworks including Python and FastAPI, AWS, and Rancher Kubernetes.