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Senior/Staff Platform Engineer

Horizon3 AI· Engineering
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Remote$199.8k - $270k + equityFull-timePosted 3w ago

About the role

Senior or Staff Platform Engineer to lead the Internal Platform Team (IPT) at Horizon3, shaping the cloud and delivery foundations behind the NodeZero platform. Hands-on technical leadership role focused on platform strategy, reliability, security, and developer experience across AWS, Kubernetes/EKS, and IaC tooling.

Responsibilities

  • Lead the design and evolution of AWS, Kubernetes/EKS, and shared platform services.
  • Define architecture for infrastructure automation, service delivery, regional capabilities, and ephemeral environments.
  • Build reusable platform capabilities, self-service workflows, and release-safety practices.
  • Evolve infrastructure-as-code and declarative approaches, including Terraform and Crossplane-related capabilities.
  • Improve platform reliability, observability, security, performance, and operability.
  • Participate in on-call and incident response, leading post-incident improvements.
  • Drive high-impact initiatives across multiple teams and balance reliability, security, cost, developer experience, and delivery speed.
  • Establish platform standards, reduce technical debt, and guide design decisions.
  • Partner with feature teams to turn platform needs into durable solutions.
  • Mentor engineers and raise the technical bar across Engineering.
  • Improve documentation, runbooks, interfaces, and self-service paths.
  • Communicate clearly and build alignment across Platform, Application Engineering, Data Engineering, Product, Program Management, and Security.

Qualifications

  • 8+ years in platform engineering, infrastructure engineering, SRE, DevOps, or software engineering with substantial production-platform ownership.
  • Deep experience designing and operating cloud platforms, preferably AWS.
  • Strong Kubernetes experience, including production operations, networking, reliability, and troubleshooting.
  • Strong infrastructure-as-code and automation experience with Terraform, Crossplane, or comparable tools.
  • Experience operating CI/CD and delivery infrastructure.
  • Strong understanding of IAM, secrets, networking, ingress, and least privilege.
  • Experience with distributed-systems observability and operational practices.
  • Proficiency in Go and Python for platform services, developer tooling, or automation.
  • Demonstrated success leading complex initiatives across multiple teams.
  • Excellent communication, mentoring, and technical-influence skills.

Skills

Required:AWS (cloud platform)Kubernetes / EKSInfrastructure as Code (Terraform, Crossplane)CI/CD toolingIAM, secrets, networking, ingressGo and PythonDistributed-systems observabilityLeadership & mentoring

Benefits

  • Inclusive Team: value diversity and inclusive culture.
  • Growth Opportunities: dynamic and growing team with career development opportunities.
  • Innovative Culture: collaborative environment with creativity encouraged.
  • Hybrid & Remote Work: mix of remote and hybrid work models; some roles may require in-office presence.
  • Competitive Compensation: salary, equity and benefits including health, vision & dental insurance, flexible vacation, parental leave.
Last updated Oct 1, 2026. Interested? Apply on the company site.

About Horizon3 AI

Only Pentesting Platform Proven in Production

Continuously assess, fix, and verify your security posture. Securing enterprises across many attack surfaces.

PentestingSecurity PostureThreat DetectionVulnerabilitiesRisk AssessmentOffensive Security
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