Platform Engineer II, Foundation

Platform Engineering at Chainalysis provides the shared infrastructure, tooling, and developer experience layer that powers every engineering team. The Foundation discipline owns the substrate: cloud infrastructure, networking, Kubernetes, streaming, and security primitives. As a Platform Engineer II, you build, improve, and operate the infrastructure primitives that every service at Chainalysis depends on - Kubernetes clusters, cloud networking, streaming infrastructure (Kafka and WarpStream), secrets management, IAM, and the reconcilers that make it all self-service and drift-free. You will work alongside senior engineers who will pair with you, review your work, and invest in your growth.

What you'll do

• Build and maintain cloud infrastructure across AWS and GCP using Terraform, designing modules and patterns that provision the substrate services run on and thinking beyond immediate use cases to how your work is consumed across the organization
• Operate and evolve multi-tenant Kubernetes clusters (EKS) serving the entire engineering organization, owning node lifecycle, upgrades, security contexts, and networking decisions that affect every team
• Own the operational side of the streaming infrastructure migration from managed Kafka (MSK) to WarpStream, building and maintaining the tooling that supports it
• Contribute to platform tooling and reconcilers that underpin the platform contract model, writing Go, working with the Kubernetes API, and building high-quality self-service primitives that engineering teams rely on
• Design and maintain foundational networking and security infrastructure including transit gateways, GCP interconnect, ingress, security groups, IAM policies, and IRSA
• Participate in on-call rotations and drive operational excellence by responding to infrastructure incidents, writing and improving runbooks, and feeding incident patterns back into automation

What you bring

• 3+ years of platform engineering experience
• Hands-on experience with AWS services (EC2, EKS, IAM, S3, VPC, or similar) - built and operated real infrastructure, not certifications
• Working knowledge of Kubernetes in production, including operating or deploying workloads on K8s clusters beyond a local environment
• Experience with infrastructure-as-code (Terraform strongly preferred; Pulumi or CloudFormation acceptable)
• Proficiency in at least one of Go, Python, or shell scripting - Go is preferred for reconciler work, but you should be ready to turn your hand to whatever the problem demands
• Comfort with CI/CD pipelines (GitHub Actions, Argo, Jenkins, or similar) and hands-on experience with on-call and incident response

Nice to have

• Experience building Kubernetes operators or controllers (CRDs, reconcilers, controller-runtime library)
• Familiarity with streaming infrastructure (Kafka, WarpStream, or similar event-driven systems) or depth in networking (VPCs, transit gateways, ingress controllers, DNS, load balancing, security groups)
• Experience in regulated environments (SOC 2, ISO-27001, or similar compliance frameworks) or familiarity with GitOps patterns (ArgoCD, Flux)
• A passion for platform engineering as leverage, caring about making other engineers more productive and eliminating toil when you see it

About Chainalysis

Chainalysis is the blockchain data platform making it easy to connect the movement of digital assets to real-world services. Powered by deep blockchain data and AI, organizations can investigate illicit activity, manage risk exposure, and develop innovative market solutions built on the industry's most trusted blockchain intelligence.