Senior Staff Software Engineer, Backend – Compute Platform

🕒 October 30

🇨🇦 Canada – Remote

💵 $209k - $269k / year

⏰ Full Time

🟠 Senior

🔙 Backend Engineer

👻 Ghost score 1%

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• Open for 16 days.
• Jobs at this company usually fill in 57 days.

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Affirm

WebsiteLinkedInAll Job Openings

1001 - 5000 employees

Founded 2012

💳 Fintech

👥 B2C

🛍️ eCommerce

💰 Post-IPO Equity on 2021-01

Fintech • B2C • eCommerce

Affirm is a financial technology company that offers a 'Buy Now, Pay Later' service, allowing consumers to make purchases and pay for them over time with flexible payment plans. Affirm eliminates hidden fees and compound interest, providing clear terms and conditions for its users. The company also offers the Affirm Card, a debit card that allows users to request to pay over time for larger purchases or pay in full for smaller ones. Affirm partners with various retailers across multiple categories, including electronics, apparel, and travel, providing customers with the convenience of paying over time at checkout both online and in physical stores. Affirm's services are integrated with Apple Pay, enabling customers to make payments seamlessly from their iPhone or iPad.

📋 Description

• 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 standardized IaC 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 for resource configuration, workload isolation, blast radius, PDBs, and Karpenter consolidation • Build enforcement and automation from research and white-glove onboarding through broad adoption and policy-enforced defaults • Establish observability, baseline audits, and reporting to identify hot spots and measure risk mitigation • Partner with checkout, batch, ML, analytics, DevProd, and other cluster-user teams to shape the platform • 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 cluster 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, alerting coverage, and running data-driven baseline audits • Cross-functional collaboration with platform, product, SRE, and capacity teams • Demonstrated mentorship and technical leadership across teams • 10+ years in software or infrastructure engineering • 6+ years hands-on operating production Kubernetes at scale, ideally EKS on AWS • Strong AWS cloud-native architecture experience with EC2, VPC, IAM, and EKS • Experience with Terraform and GitOps-style deployment pipelines; Spacelift is a plus • 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 • Excellent communication skills

🏖️ Benefits

• Equity rewards may be included in the total compensation package • Monthly stipends for health, wellness and tech spending • 100% subsidized medical coverage for employees and dependents • Dental and vision coverage for employees and dependents • Flexible time off • Generous holiday calendars • Employee stock purchase plan (ESPP) with discounted Affirm stock • Inclusive interview process and accommodations for candidates with disabilities • In-person onboarding experience for all new hires

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