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Principal Infrastructure Engineer

4 weeks ago
Colombia
Full-time
Lead
Infrastructure Engineer
DevOps and Infrastructure
AWS CI/CD DNS Git GitLab Go Grafana Kubernetes Linux MySQL PostgreSQL Prometheus Python Terraform TLS
Apply Now
Sezzle

Sezzle

Sezzle is a payments company revolutionizing the buy now, pay later experience with interest-free installment plans, empowering consumers and merchants alike.

Diversified Financial Services
251-1K
Founded 2016
View All Jobs 94

Description

  • Own the architecture and evolution of core infrastructure, identifying limits and prioritizing improvements.
  • Design and build resilient AWS account, IAM, networking, and multi-region or multi-AZ architectures.
  • Operate and improve Kubernetes platforms, including lifecycle automation, workload isolation, autoscaling, upgrades, and deployment reliability.
  • Scale and optimize Aurora RDS for MySQL and Postgres through query tuning, capacity planning, replication improvements, and safe migrations.
  • Engineer reliability through service-level objectives, failure isolation, backpressure, load shedding, and safe retry strategies.
  • Participate in on-call rotations, lead recovery during major incidents, and implement postmortem corrective actions.
  • Build disaster recovery, backup, restore, failover, observability, infrastructure-as-code, and operational automation capabilities.
  • Conduct capacity planning, load testing, bottleneck analysis, safe migrations, and cloud cost optimization.
  • Develop and evaluate AI-assisted tooling for incident investigation, runbooks, anomaly analysis, and toil reduction.
  • Write architecture proposals, prototype and benchmark solutions, review shared infrastructure changes, and document system behavior.

Requirements

  • Bachelor’s degree in Computer Science or a similar technical field.
  • 12+ years of experience across infrastructure, platform, SRE, software development, or related engineering disciplines.
  • Deep production expertise with AWS, including compute, IAM, multi-account architecture, VPC design, and private networking.
  • Deep production expertise with Kubernetes; EKS experience is strongly preferred.
  • Experience with RDS/Aurora MySQL and/or Postgres at scale, including performance tuning, replication, high availability, failover, and recovery.
  • Track record of personally delivering measurable infrastructure improvements in capacity, latency, reliability, or cost.
  • Strong coding and automation skills in Golang, Python, or similar languages, plus Terraform or equivalent infrastructure-as-code experience.
  • Strong fundamentals in Linux, networking, DNS, TLS, storage, concurrency, and distributed-system failure modes.
  • Experience operating 24/7 high-availability platforms, participating in incident response, and testing disaster recovery.
  • Experience with observability, load testing, capacity planning, safe CI/CD, and active use of AI tools with appropriate validation.
  • Preferred: fintech, payments, or banking experience; multi-region architectures; chaos engineering; Prometheus, Grafana, Loki, or Tempo; and internal platform tooling.

Benefits

  • Monthly gross compensation of $12,500–$20,800 USD, based on location and experience.
  • Remote full-time role.
  • Opportunity to work on fintech infrastructure with AWS, Kubernetes, Aurora, Golang, and Python.
  • Opportunity to build AI-assisted infrastructure and SRE tooling.
  • Collaborative environment focused on open-source technology and measurable engineering impact.

Interested in this position?

Apply directly on the company website

Apply Now

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