4 hours ago
Remote, ArgentinaStaff+
Responsibilities
- Own the technical architecture and evolution of core infrastructure as traffic, data volume, and workload complexity grow.
- Build capacity models, conduct load and stress tests, diagnose bottlenecks, and improve throughput, latency, reliability, and cost efficiency.
- Design resilient AWS account, IAM, networking, multi-AZ, and multi-region architectures.
- Build and operate Kubernetes platforms, including cluster lifecycle automation, workload isolation, resource allocation, autoscaling, upgrades, and deployment reliability.
- Scale and optimize Aurora RDS databases using MySQL and Postgres, including query tuning, indexing, connection management, replication, failover, schema changes, and migrations.
- Define and instrument service-level objectives and error budgets and implement failure isolation, backpressure, load shedding, and safe retry behavior.
- Participate in on-call rotations, recover major incidents, perform evidence-based triage, and implement postmortem corrective actions.
- Design, test, and document disaster recovery, backup, restore, and failover mechanisms against recovery objectives.
- Build infrastructure-as-code, provisioning, deployment, upgrade, recovery, observability, and operational automation.
- Deliver safe infrastructure migrations with phased rollouts, validation, compatibility checks, and rollback paths.
- Improve cloud cost efficiency through resource sizing, utilization improvements, autoscaling, and storage optimization.
- Build and evaluate AI-assisted tooling for incident investigation, runbooks, anomaly analysis, capacity analysis, and toil reduction.
- Write architecture proposals, prototype and benchmark technology choices, review shared infrastructure changes, and document system operations 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.
- 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 is strongly preferred.
- Deep expertise with relational databases at scale, specifically RDS/Aurora with MySQL and/or Postgres.
- Demonstrated experience personally delivering infrastructure scaling improvements with measurable gains in capacity, latency, reliability, or cost efficiency.
- Strong coding and automation skills using Golang, Python, or similar languages, plus infrastructure-as-code experience with Terraform or equivalent.
- Strong systems fundamentals covering Linux, networking, DNS, TLS, storage, concurrency, and distributed-system failure modes.
- Experience operating 24/7 high-availability platforms with hands-on incident response and postmortem remediation.
- Willingness and ability to participate in on-call rotations and recover production systems under pressure.
- Experience implementing and testing disaster recovery, restoring data, and validating service recovery.
- Practical experience with observability, load testing, capacity planning, and safe CI/CD practices.
- Active use of AI tooling in engineering or operations, including verification of generated code, recommendations, and operational actions.
- Ability to carry ambiguous technical problems through investigation, production delivery, and cross-disciplinary resolution.
- Preferred experience includes fintech, payments, or banking; multi-region architectures; chaos engineering; failure testing; Prometheus, Grafana, Loki, or Tempo; and internal platform and self-service tooling.
Benefits
- Remote, full-time position.
- Employees participate in a culture that includes musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers.
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.