7 hours ago
Remote, FranceStaff+
Responsibilities
- Own the architecture and evolution of core infrastructure supporting increasing traffic, data volume, and workload complexity.
- Design resilient AWS account, IAM, networking, service, multi-AZ, and multi-region architectures.
- Build and operate the Kubernetes platform, including cluster lifecycle, workload isolation, resource allocation, autoscaling, upgrades, and deployment reliability.
- Scale and optimize Aurora RDS for MySQL and Postgres through query and index tuning, connection and replication improvements, capacity planning, failover, schema changes, and migrations.
- Engineer reliability through service-level objectives, error budgets, failure isolation, backpressure, load shedding, and safe retry behavior.
- Participate in on-call rotations and lead technical recovery during serious incidents, including full outages.
- Design, test, and document disaster recovery, backup, restore, failover, and recovery exercises.
- Build infrastructure-as-code, deployment, provisioning, configuration, upgrade, and operational automation.
- Improve observability through metrics, logs, traces, dashboards, and actionable alerts.
- Deliver safe infrastructure migrations with phased rollouts, validation, compatibility checks, and rollback paths.
- Improve cloud cost efficiency through resource right-sizing, utilization improvements, autoscaling, storage tuning, and quantified savings.
- Build and evaluate AI-assisted tooling for incident investigation, capacity analysis, runbook automation, anomaly analysis, and toil reduction.
- Write architecture proposals, evaluate tradeoffs through prototypes and benchmarks, review shared-infrastructure changes, and document system operation and failure modes.
Requirements
- Bachelor’s degree in Computer Science or a similar technical field is required.
- 12+ years of experience across infrastructure, platform, site reliability, software development, or related engineering disciplines is required.
- Deep production expertise with AWS, including compute, IAM, multi-account architectures, networking, VPC design, and private connectivity.
- Deep production expertise with Kubernetes, including cluster lifecycle, scheduling, resource management, autoscaling, networking, and troubleshooting; EKS experience is preferred.
- Deep expertise with RDS/Aurora MySQL and/or Postgres, including query performance, indexing, connection management, replication, high availability, failover, backup, and recovery.
- Demonstrated personal delivery of infrastructure scaling improvements with measurable capacity, latency, reliability, or cost gains.
- Strong coding and automation skills with Golang, Python, or similar languages, plus infrastructure-as-code experience with Terraform or equivalent.
- Strong systems fundamentals in Linux, networking, DNS, TLS, storage, concurrency, and distributed-system failure modes.
- Experience operating a 24/7 high-availability platform with hands-on incident response and postmortem remediation.
- Willingness and demonstrated ability to participate in on-call rotations and recover production systems under pressure.
- Experience implementing and testing disaster recovery against defined recovery objectives.
- Practical experience with observability, load testing, capacity planning, and safe CI/CD practices for shared production infrastructure.
- Active use of AI tooling in engineering or operations, with the ability to verify generated code, recommendations, and operational actions.
- Ability to take ambiguous technical problems from investigation through production delivery and collaborate across engineering disciplines.
- Preferred qualifications include fintech, payments, or banking experience; multi-region architectures; chaos engineering; failure testing; Prometheus, Grafana, Loki, or Tempo; internal platform and self-service tooling; progressive delivery; and AI-assisted incident investigation or operational automation.
Benefits
- Remote, full-time position.
- Monthly gross compensation range of $12,500–$20,800 USD based on location and experience.
- Opportunity to work on infrastructure supporting fintech and payments workloads with direct customer and revenue impact.
- Collaborative culture with engineers, data enthusiasts, innovators, and colleagues with interests including music, yoga, cycling, cooking, golf, dogs, and rock climbing.
Tech Stack
Categories
About Sezzle
Sezzle builds a buy now, pay later platform that lets consumers split purchases into interest-free installments online and in stores, integrated with e-commerce and retail merchants. The company earns revenue from merchant fees and related consumer charges and provides underwriting and payment processing services. Founded in 2016 and headquartered in Minneapolis, Sezzle is a public company dual-listed on Nasdaq and the ASX.