Principal Infrastructure Architect: Scale & Reliability

Sezzle; Amsterdam; On-site; EUR 140,000 - 190,000; Full time

Benefits offered by this job

Comprehensive Benefit Plans

Generous Parental & Family Leave

Competitive 401k Match

Paid Time Off & Volunteer Time Off

Ownership Through Equity

Remote Friendly Company

Discounted Fitness Membership

Job summary

Sezzle is seeking a Principal Infrastructure Engineer to design, build, operate, and scale the platform that powers Sezzle. You will own architecture, drive reliability, and reduce cost while delivering high throughput and low latency.

The role connects AWS, Kubernetes, and Aurora RDS with IaC, instrumentation, and AI-assisted tooling, and includes on-call ownership and postmortems to improve production readiness and resilience.

Qualifications

• Bachelor’s degree in Computer Science or a related technical field.
• 12+ years of experience designing and operating production infrastructure at scale.
• Deep expertise with Kubernetes in production and with AWS.
• Strong coding and automation skills with Golang, Python, or similar languages.
• Experience with incident response, disaster recovery, and postmortems.
• Experience building AI-assisted incident investigation or operational automation.
• Proven ability to reduce toil through platform tooling and self-service capabilities.

Responsibilities

• Own the technical architecture and evolution of core infrastructure.
• Lead design, prototyping, and implementation of scalable, reliable systems.
• Manage on-call rotations and drive incident recovery with evidence-based triage.

Skills

Kubernetes

AWS

Linux

Networking

Databases

Python

Go

Terraform

Incident response

Automation

Education

Bachelor’s degree in Computer Science or related field

Tools

Aurora RDS

PostgreSQL

Git

GitLab

Terraform

Job description

Sezzle is seeking a Principal Infrastructure Engineer to design, build, operate, and scale the platform that powers Sezzle. You will own architecture, drive reliability, and reduce cost while delivering high throughput and low latency.

The role connects AWS, Kubernetes, and Aurora RDS with IaC, instrumentation, and AI-assisted tooling, and includes on-call ownership and postmortems to improve production readiness and resilience.