R&D DevSecOps Engineer

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.

Responsibilities

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

Requirements

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; U.S. citizenship and the ability to obtain and maintain a government security clearance

Nice to have

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

Benefits

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