Principal Platform Engineer (Infrastructure) - Remote

Posted 23 Days Ago
Hiring Remotely in New York, NY, USA
In-Office or Remote
Senior level
Agency • Cloud • Professional Services • Software
The Role
Own the architecture and hands-on development of an internal AI-assisted software development platform. Lead infrastructure, Kubernetes, Terraform-based environments, CI/CD, cloud security, observability, compliance automation, developer experience, and AI coding-tool sandboxing. Establish tenant isolation, identity, networking, governance gates, cost tracking, and reliability practices. Provide architecture leadership, mentor engineers and vendors, advise executives, and travel to clients as required.
Summary Generated by Built In
The Opportunity
We’re partnering with a leading global management consulting firm that advises C-suite leaders on their most complex problems. The firm is building an internal platform to make AI-assisted software development consistent, secure, and repeatable across its product portfolio, covering everything from how code gets written and checked to how it ships and runs in production.

This role owns the foundation underneath all of it. You’ll set the technical direction for infrastructure, delivery, security, and developer experience, and you’ll build much of it yourself. The goal is a platform that every product team inherits by default and that keeps getting better after you’ve moved on to the next problem.

Expect a mix of hands-on engineering, architecture leadership, and mentoring. This role is remote within the U.S.

What You’ll Own
  • Set the platform’s architecture: one container-orchestrated runtime, strong isolation between client engagements, and reusable, versioned infrastructure as code that spins environments up and down on demand
  • Build identity, networking, and observability in from the start, with no long-lived credentials, just-in-time audited access, SLOs and alerting, and per-engagement cost tracking (AI spend included)
  • Own shared CI/CD and the gate framework behind it, so quality, security, and AI-governance checks can block releases, and compliance evidence (scanning, signed artifacts, SBOMs, SOC2/ISO 27001) comes out of every build automatically
  • Package the AI-assisted dev environment as a real product with hard sandbox boundaries for coding agents, and measure the platform by developer outcomes like setup time, pipeline speed, and adoption
  • Lead major architecture decisions through written trade-off docs, advise senior stakeholders on platform risk, and mentor engineers and vendor partners

What You Bring
  • 15+ years (Principal) or 10+ years (Staff) in software, platform, or infrastructure engineering. Platform work for consulting or professional services firms, including client isolation and data residency, preferred
  • Fleet-scale infrastructure as code with Terraform or OpenTofu, plus Terragrunt or similar: module design, remote state, multi-environment layouts
  • Production experience running multi-tenant Kubernetes, including GitOps, network and admission policies, workload identity, and tenant isolation. vcluster or Crossplane preferred
  • CI/CD built as a shared platform (GitHub Actions or similar), with reusable workflows, org-wide branch protection, and enforced gates. Developer portal experience (Backstage, Port) preferred
  • Hands-on cloud identity and network security on Azure, AWS, or GCP: workload identity federation, RBAC, private networking, WAF, DNS. Certifications such as Azure Solutions Architect, CKA/CKS, or CISSP preferred
  • Security and compliance automation: scanners like Snyk, Checkov, or Trivy; policy engines like OPA, Kyverno, or Azure Policy; supply chain controls (signing, provenance, SBOM); SOC2 and ISO 27001 evidence. Experience sandboxing AI coding tools (Claude Code, Copilot, etc.) preferred
  • Production observability with OpenTelemetry or similar: collector design, SLOs and error budgets, alert routing, incident response, chaos testing. FinOps experience (cost allocation, showback, optimization) preferred
  • Real application development experience in Go, Python, or TypeScript, plus solid habits around testing, code review, trunk-based development, and releases
  • Strong written and verbal communication, including with executives. A track record of teaching through internal docs, workshops, or engineering communities preferred
  • Comfort working in Agile, cross-functional product teams

Skills Required

  • 15+ years of experience in software, platform, or infrastructure engineering for Principal level, or 10+ years for Staff level
  • Fleet-scale infrastructure as code experience with Terraform or OpenTofu, plus Terragrunt or similar
  • Production experience running multi-tenant Kubernetes with GitOps, network and admission policies, workload identity, and tenant isolation
  • Experience building shared CI/CD platforms with reusable workflows, branch protection, and enforced quality and security gates
  • Hands-on cloud identity and network security experience with Azure, AWS, or GCP
  • Security and compliance automation experience, including scanning, policy engines, artifact signing, provenance, SBOMs, SOC 2, or ISO 27001 evidence
  • Production observability experience, including OpenTelemetry or similar, SLOs, error budgets, incident response, and chaos testing
  • Application development experience in Go, Python, or TypeScript
  • Experience with testing, code review, trunk-based development, and software releases
  • Strong written and verbal communication skills, including executive communication
  • Experience working in Agile, cross-functional product teams
  • Platform work for consulting or professional services firms, including client isolation and data residency
  • Experience with vcluster or Crossplane
  • Developer portal experience with Backstage, Port, or similar
  • Certifications such as Azure Solutions Architect, CKA, CKS, or CISSP
  • Experience sandboxing AI coding tools such as Claude Code or GitHub Copilot
  • FinOps experience with cost allocation, showback, and optimization
  • Experience teaching through internal documentation, workshops, or engineering communities
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The Company
HQ: Joplin, MO
101 Employees
Year Founded: 2012

What We Do

Midwestern Interactive, LLC is a U.S.-based software and product development firm that delivers cloud and mobile applications, digital strategy, and creative/media services. The company provides scoped projects, embedded engineering teams, and recruiting/talent services to help clients accelerate product development and scale technical capability. Founded in 2012 and headquartered in Joplin, MO, Midwestern focuses on end-to-end product delivery and talent partnerships for growing businesses.

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