[Remote] Principal DevSecOps / Platform Engineer

Note: The job is a remote job and is open to candidates in USA. General Dynamics Information Technology is a global technology and professional services company focused on delivering consulting, technology, and mission services to U.S. government agencies. They are seeking a Principal DevSecOps / Platform Engineer to build and operate software factories, security automation platforms, and AI-enabled development environments for Department of Defense and Federal customers, emphasizing hands-on software development within a DevSecOps context.ResponsibilitiesDesign, develop, and maintain CI/CD pipelines for build, test, security scanning, and release across unclassified and classified environmentsIntegrate and operate security scanning toolchains (SAST, SCA, container scanning, SBOM generation) as automated pipeline stagesUse AI-assisted development workflows daily — code generation, automated testing, intelligent code review, and documentation — and champion their adoption across teamsContribute to the development of agentic AI capabilities including tool orchestration, prompt engineering, and workflow automationBuild tooling and automation to support continuous Authority to Operate (cATO) processes, including automated evidence collection, compliance reporting, and policy enforcementDevelop and maintain hardening pipeline templates that product teams consume for secure-by-default software deliverySupport platform's security pipeline layer — build, test, and release process for software packages that include both application code and runtime platform componentsImplement and enforce software supply chain security controls (signing, provenance, artifact integrity)Troubleshoot build and deployment failures, support development teams consuming shared pipeline servicesDeploy and operate Kubernetes clusters (Big Bang / Iron Bank baseline) in classified (CUI/IL5) environmentsDeploy, configure, and support AI-powered development tools (GitLab Duo, LLM-based code assistants, agentic AI frameworks) for platform consumers and internal team useSupport AI/ML platform infrastructure (model serving, GPU workloads, data pipelines) as part of the broader platform offeringStand up and maintain shared platform services: Harbor (container registry), Nexus (artifact repository), Vault (secrets management), ArgoCD (GitOps deployment)Implement Infrastructure-as-Code for environment provisioning, cluster lifecycle, and configuration management (Terraform, Ansible)Support multi-cluster management and hub/spoke deployment models — build in shared services, deploy into downstream accountsConfigure and troubleshoot network connectivity, Zscaler integration, and Okta/SAML identity federation for platform consumersContribute to platform evolution including self-service namespaces, developer onboarding, and golden-path templatesMaintain and improve multiple production software factory environments serving diverse federal customersContribute to runbooks, operational documentation, and incident response proceduresSkills8 + years of related experienceUS Citizenship RequiredEducation: Bachelor's degree and 8+ years experience. In lieu of degree 12+ years of hands-on experience5+ years of related experience in Software Engineering, DevOps / DevSecOps technologies; 3+ years of hands on experience with KubernetesExperience using AI-powered development tools (code assistants, LLM-based tooling, AI-augmented workflows) in daily engineering work — and enthusiasm for pushing their adoption forwardHands-on experience with CI/CD pipeline development — GitLab CI strongly preferred; Jenkins, GitHub Actions, or similar acceptedExperience integrating security scanning tools into automated pipelines (SAST, DAST, SCA, container image scanning)Proficiency with Infrastructure as Code (Terraform and/or Ansible)Experience with containerization (Docker, Helm, OCI artifacts) and container registry managementStrong Linux systems skills — administration, shell scripting, troubleshootingSolid understanding of Git-based workflows, branching strategies, and GitOps deployment patternsExperience working in or deploying to classified or air-gapped environmentsAbility to work across multiple concurrent projects with shifting prioritiesStrong written and verbal communication skillsSecurity clearance level: Secret Clearance required to startLocation: Remote with travel up to 10%Experience with Platform One / Big Bang, Iron Bank baselines, or DoD-hardened Kubernetes distributionsFamiliarity with DoD security and authorization frameworks (NIST 800-53, RMF, cATO, software factory authorization patterns)Knowledge of software supply chain security practices — artifact signing, attestation, and SBOM generation (e.g., Sigstore/Cosign, Syft, in-toto)Experience deploying or operating AI/ML infrastructure or AI development platforms in enterprise or air-gapped environments (model serving, GPU scheduling on K8s, enterprise code-assistant rollout)Experience supporting growth activities — contributing to proposals, RFI responses, or technical briefings, and engaging customers as a technical SMEBenefitsA variety of medical plan options, some with Health Savings AccountsDental plan optionsA vision planA 401(k) plan offering the ability to contribute both pre and post-tax dollars up to the IRS annual limits and receive a company matchFull flex work weeks where possibleA variety of paid time off plans, including vacation, sick and personal time, holidays, paid parental, military, bereavement and jury duty leave15 days of paid leave per calendar year to be used for vacations, personal business, and illnessAn additional 10 paid holidays per yearPaid leave and paid holidays are prorated based on the employee’s date of hireThe GDIT Paid Family Leave program provides a total of up to 160 hours of paid leave in a rolling 12 month period for eligible employeesShort and long-term disability benefitsLife, accidental death and dismemberment, personal accident, critical illness and business travel and accident insuranceCompany OverviewGeneral Dynamics Information Technology is an IT consulting company that specializes in cyber security, AI, and quantum computing. It is a sub-organization of General Dynamics. It was founded in 1999, and is headquartered in Falls Church, Virginia, USA, with a workforce of 10001+ employees. Its website is https://www.gdit.com/.