Senior Platform Engineer: Cloud, Kubernetes & Automation

Devopsroles; United States; Hybrid; USD 200,000 - 270,000; Full time

Benefits offered by this job

Hybrid & Remote Work

Competitive Compensation

Equity and Benefits

Job summary

Horizon3 is seeking a Senior/Staff Platform Engineer to join the Internal Platform Team and shape the cloud foundations behind NodeZero. You will lead cross-team initiatives, define platform direction, and build reusable capabilities to secure, scale, and simplify environments.

You will design AWS/Kubernetes/EKS hosted services, automate infrastructure, and foster declarative workflows across teams while mentoring engineers. This role offers remote/hybrid options and competitive compensation.

Qualifications

• 8+ years in platform engineering, infrastructure engineering, SRE, DevOps, or software engineering with 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.

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.

Skills

Platform engineering

Leadership

Cloud architecture

Go

Python

CI/CD

Observability

Security

Tools

Terraform

Crossplane

GitLab CI/CD

OpenTelemetry

Datadog

Kubernetes

AWS

Job description

Horizon3 is seeking a Senior/Staff Platform Engineer to join the Internal Platform Team and shape the cloud foundations behind NodeZero. You will lead cross-team initiatives, define platform direction, and build reusable capabilities to secure, scale, and simplify environments.

You will design AWS/Kubernetes/EKS hosted services, automate infrastructure, and foster declarative workflows across teams while mentoring engineers. This role offers remote/hybrid options and competitive compensation.