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R&D DevSecOps Engineer at Rackner. . Location: Remote. Software/AI Developer & DevSecOps Engineer. R&D. . Location:. United States. Work Model:. Remote. Clearance:. U.S. citizenship required. Active Secret clearance preferred; candidates must be eligible to obtain and maintain a U.S. government security clearance.. . Build Secure, AI-Enabled Mission Software. . Rackner is seeking a Software/AI Developer & DevSecOps Engineer.  R&D to build mission-focused applications, AI-enabled development tools, and secure software-delivery pipelines for government and defense customers.. This is a hands-on role spanning software engineering, generative AI, application modernization, and DevSecOps. You will develop working software while creating the controls needed to use AI coding agents safely in secure government environments.. . What You’ll Do. . . Build backend services, APIs, data workflows, and AI-enabled applications.. . Develop model-agnostic coding agents and LLM workflows with human approval, prompt history, auditability, and controlled tool access.. . Enforce architecture, UX, cybersecurity, testing, and deployment standards through automated policies and CI/CD controls.. . Generate and maintain technical documentation, architecture diagrams, API documentation, and software bills of materials.. . Use AI-assisted analysis to assess and modernize application portfolios through replatforming, refactoring, retirement, preservation, or API wrapping.. . Integrate human- and AI-generated code into automated quality, functional, security, accessibility, and compliance testing.. . Build hardened AI development environments using approved tools, isolated execution, restricted permissions, and secure containers or virtual machines.. . Develop Platform One-compatible workflows that enforce Iron Bank images, approved cloud services, and Party Bus deployment requirements.. . Connect user feedback, behavior telemetry, logs, metrics, and platform context to agents that identify issues and prepare reviewed pull requests.. . Build platform-security automation that finds vulnerabilities and configuration risks, recommends fixes, and produces compliance evidence.. . Collaborate with software, platform, cybersecurity, and mission teams to move R&D prototypes toward operational use.. . .  . What You’ll Bring. . . Strong software development experience, particularly with Python.. . Experience building backend services, APIs, integrations, or data-driven applications.. . Experience with generative AI, LLM applications, coding agents, or AI-assisted software development.. . Experience with DevSecOps, CI/CD, cloud-native development, or platform engineering.. . Familiarity with Docker, Kubernetes, Git, automated testing, security scanning, and infrastructure-as-code.. . Understanding of application architecture, secure coding, code review, debugging, and software supply-chain security.. . Ability to independently take an evolving technical problem from concept through implementation and demonstration.. . S. citizenship and the ability to obtain and maintain a government security clearance.. . .  . Helpful Experience. . . Active Secret clearance or higher.. . Experience with Platform One, Party Bus, Big Bang, Iron Bank, or DoD software factories.. . Experience with OpenCode, Codex, Claude Code, LangGraph, LangChain, LlamaIndex, or similar agentic-development tools.. . Experience with FastAPI, Prefect, Temporal, PostgreSQL, vector databases, or event-driven systems.. . Experience with AWS, Azure, Helm, Terraform, GitLab CI, GitHub Actions, or Argo CD.. . Familiarity with NIST SP 800-53, RMF, DISA STIGs, CMMC, cATO, or other DoD cybersecurity requirements.. . Experience with SAST, DAST, SBOM generation, dependency scanning, observability, or automated remediation.. . Experience modernizing legacy systems or developing software for classified, disconnected, or constrained environments.. . Experience supporting defense, C2, ISR, mission planning, autonomy, or other national security missions.. . . What Success Looks Like. . Success means delivering software and AI-assisted engineering workflows that are functional, secure, explainable, maintainable, and deployable. You will help shorten the path from mission need to operational capability while ensuring AI-generated changes remain controlled, tested, traceable, and subject to human review.. . About Rackner. . Rackner builds mission-critical systems for the U.S. government across software engineering, AI/ML, DevSecOps, cloud platforms, distributed systems, and application modernization.. . Benefits & Perks. . . Company-supported technical certifications. . Clear advancement and leadership opportunities. . 401(k) with 100% match up to 6%. . Comprehensive medical, dental, vision, life, and disability coverage. . Generous PTO and paid holidays. . Home-office equipment and remote-work support. . Fitness and wellness reimbursement. . Weekly pay and team events. . .  . . Equal Opportunity. . Rackner is an equal opportunity employer and considers all qualified applicants without regard to any legally protected characteristic.. .