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Open nowPosted 16 hours ago

Principal Platform Engineer

Shift514 open roles

Where
Rosslyn, VA or Remote
Work mode
Remote
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Your applicationOpen nowPrincipal Platform EngineerShift5 · Rosslyn, VA or Remote

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The clock on this job

Early applications get read.

8.1% of postings close within 7 days. Measured by our own scanner across the market. Shift5 postings stay open a median of 22 days.

Share of postings closed within
  1. 1.7%1 day
  2. 3.6%3 days
  3. 8.1%7 days
  4. 15.1%14 days
  5. 34.0%30 days
This job: posted 16 hours ago

Shift5 median: 22 days open

The posting

About Shift5

Shift5 delivers operational intelligence for onboard OT across defense, aerospace, and commercial transportation fleets. We capture and analyze databus data to detect anomalies, predict failures, and secure critical infrastructure against cyber threats.

The Role & Team

The Platform Engineering team owns four core capabilities: Operating Systems (BaseOS, Manifold, Yocto), Cloud & Infrastructure (AWS/GovCloud to edge), Developer Experience (CI/CD guardrails, internal tooling), and AI Enablement (secure AI orchestration and tooling).

As Principal Platform Engineer, you are the senior-most individual contributor on the team, serving as the primary technical anchor for architecture and a key multiplier for the engineering org. You will drive overall technical strategy, mentor senior engineers, and step into direct team leadership or people management as needed.

What You'll Do

  • Release Engineering & Delivery Backbone: Architect and operate end-to-end release infrastructure (Lunar) and GitOps delivery pipelines using ArgoCD, EKS, GitHub Enterprise, and GitHub Actions.
  • Supply Chain Security & Compliance: Lead artifact security (Harbor, Cosign, Vault Transit Engine) and build automated, compliance-by-default pipelines (NIST controls, SBOM generation) to eliminate program friction.
  • OS Lifecycle & AI Enablement: Support hardware OS image builds (Yocto, Manifold) and productionize internal AI gateways, RAG tooling, and developer AI workflows (Cursor).
  • Technical & Team Leadership: Author RFCs/design docs, run architecture reviews, plan roadmaps, and mentor mid/staff-level engineers. Provide direct management (1:1s, hiring, performance reviews) during transitions or scale.
  • Cross-Functional Collaboration: Partner with security, embedded, and field teams to ensure seamless delivery across airgapped and edge environments.

What Success Looks Like

  • Predictable Delivery: Release engineering is seamless, observable, and fully trusted across teams.
  • Automated Security: Compliance evidence and SBOMs are generated natively in CI/CD without manual overhead.
  • Governed AI: AI tooling is securely integrated, well-documented, and actively adopted by developers.
  • Team Growth & Resilience: Engineering standards elevate across the org, priorities remain clear, and team leadership operates without single points of failure.

What We’re Looking For

Required:

  • 10+ years in software/platform engineering, with 5+ years managing production infrastructure at scale.
  • Technical & People Leadership: Proven track record leading projects, designing architecture, mentoring engineers, and readiness (or prior experience) for direct people management.
  • Cloud & Modern Delivery: Hands-on mastery of Kubernetes, ArgoCD, GitHub Actions/Earthly, and Infrastructure as Code (Terraform/OpenTofu, AWS/GovCloud).
  • Supply Chain Security: Strong background in artifact registries, container signing (Cosign/Sigstore), Vault, and SBOM generation.
  • Clearance: Ability to obtain and maintain a U.S. Security Clearance (U.S. Citizenship required).

Preferred:

  • Background in defense, aerospace, or regulated environments (NIST 800-53, IL4/IL5, CMMC).
  • Embedded Linux/OS experience (Yocto, SLE Micro) and airgapped/edge deployment models.
  • Experience deploying internal AI/LLM infrastructure (RAG, model gateways, governance).
  • Scripting proficiency in Go, Python, and Bash.

Compensation & Benefits

  • Base Salary: $255,000 - $280,000
  • Bonus program and equity in a fast-growing startup
  • Competitive medical, dental, and vision coverage for employees and their families
  • Health Savings Account with annual employer contributions
  • Employer-paid Life and Disability Insurance
  • Uncapped paid time off policy
  • Flexible work & remote work policy
  • Tax-deferred public transit benefits with Metro SmartBenefits (DC/MD/VA)

We are committed to building an inclusive culture of belonging that embraces the diversity of our people and represents the communities in which we work and the customers we serve. We know the happiest and highest performing teams include people with diverse perspectives and ways of solving problems. We strive to attract and retain talent from all backgrounds and create workplaces where everyone feels empowered to bring their full, authentic selves to work.

Shift5 is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to race, color, religion, sexual orientation, gender identify, national origin, disability, age, marital status, ancestry, projected veteran status, or any other protected group or class.

Privacy Policy and Notice for Shift5, Inc. Job Applicants, Employees & Contractors

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