173K–255K USD / year
Senior Software Engineer, Backend (Workload Safety)
BackendRemote — United States
Published on 2026-10-21
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About this role
Build and enforce workload safety standards across Affirm’s fleet of more than 85 Amazon EKS clusters. Lead standards from research and prototyping through rollout, automation, and ongoing measurement to improve availability, latency, and cost.
About the company
Affirm offers buy now, pay later financing that lets consumers split purchases into transparent installment payments at checkout. It partners with merchants to provide flexible credit options without late fees.
The team
Workload Safety team
Stack
Amazon EKSKubernetesGoPythonOPA GatekeeperKyvernoKarpenterAWS EC2
What you'll do
- Define and evolve workload configuration, isolation, placement, and disruption standards.
- Develop policy and automation to make workloads compliant by default.
- Lead cross-team initiatives and fleet-wide rollouts; mentor engineers.
- Debug Kubernetes runtime and node lifecycle issues, turning recurring incidents into systemic fixes.
- Determine cluster operating limits and develop control-plane scaling patterns.
- Analyze workload resource profiles to guide EC2 instance strategy.
- Measure standards’ impact on availability, latency, risk, and cost.
- Participate in on-call for Kubernetes runtime issues.
What we're looking for
- 5+ years running Kubernetes in production at scale, ideally Amazon EKS across many clusters.
- Deep knowledge of Kubernetes resource management, scheduling, pod lifecycle, and disruption management.
- Experience enforcing configuration standards with admission control and policy-as-code.
- Proficiency in Go or Python and experience building production infrastructure software.
- Strong production debugging skills and a track record of leading cross-team initiatives.
- Experience measuring infrastructure changes’ impact on availability, latency, and cost.
- Strong written communication and ability to create adoptable standards and guidance.
- Equivalent practical experience or a related bachelor’s degree.
Benefits
- 100% subsidized medical, dental, and vision premiums for employees and dependents.
- Monthly technology, health, and wellness spending stipends.
- Flexible time off and generous holiday calendars.
- Employee stock purchase plan with a stock discount.