Senior Staff Engineer architecting Affirm’s EKS and Kubernetes compute platform. Building secure, reliable infrastructure for Affirm’s global buy-now-pay-later financial products.
Responsibilities
Architect and evolve Affirm’s EKS platform across cluster lifecycle, node management, and shared cluster components
Lead technical direction for cluster provisioning, upgrades, and teardown using Terraform, Spacelift, and self-service workflows
Own reliability of shared components including Karpenter, CoreDNS, VPC CNI, Kube Proxy, and Metrics Server
Maintain the CI/CD pipeline that consistently ships shared platform components
Define and enforce EKS workload safety standards covering resource configuration, isolation, blast radius, disruption tolerance, and consolidation strategies
Build enforcement and automation from research and onboarding through broad adoption and policy-enforced defaults
Establish observability, baseline audits, and reporting to identify hotspots and measure risk mitigation
Partner with checkout, batch, ML, analytics, DevProd, and other cluster-user teams
Drive cost and capacity strategy across node scaling, bin packing, and EC2 instance selection
Mentor engineers across Compute Platform teams and set standards for operational excellence
Participate in on-call rotation, triage and catalog runtime Kubernetes issues, and collaborate with SRE on production incidents
Requirements
Deep EKS and Kubernetes internals expertise, including cluster upgrades, node lifecycle, scheduling, and autoscaling (Karpenter, Cluster Autoscaler)
Experience automating Kubernetes operations at fleet scale, including provisioning, upgrades, node lifecycle, self-healing remediation, and policy-driven enforcement
Strong grasp of workload reliability patterns: resource tuning, probes, PDBs, topology, and isolation constraints
Experience designing and enforcing platform standards through policy, including admission control and OPA/Gatekeeper or equivalent
Infrastructure as Code fluency with Terraform and GitOps or pipeline-driven delivery models such as ArgoCD or kube-applier
Observability experience defining SLOs, building metrics, logs, and alerting coverage, and running data-driven baseline audits
10+ years in software or infrastructure engineering with proven delivery of complex platform solutions
6+ years hands-on operating production Kubernetes at scale, ideally EKS on AWS
Strong cloud-native architecture experience on AWS, including EC2, VPC, IAM, and EKS
Experience with Infrastructure-as-Code and GitOps-style deployment pipelines
Expert-level proficiency in Go or Python
Proven track record building production-grade Kubernetes controllers, operators, and platform tooling
Track record designing and enforcing standards across many teams
Exceptional problem-solving and systems-thinking skills
Demonstrated leadership and cross-functional influence
Either equivalent practical experience or a Bachelor’s degree in a related field
Benefits
100% subsidized medical coverage for employees and their dependents
Dental and vision coverage for employees and their dependents
Monthly tech setup spending stipend
Monthly health and wellness spending stipends
Flexible time off
Generous holiday calendars
Employee stock purchase plan (ESPP) with discounted Affirm stock
Remote-first flexibility within the country of employment
In-person onboarding experience for all new hires
Inclusive interview process and disability accommodations
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