Compensation:
For this principal development role, with 12+ years of experience, the compensation range is $12,500 - $20,800 USD based on location and experience level per month and in gross amount. This range acknowledges the extensive expertise, leadership capabilities, and significant contributions expected at this level, offering a competitive salary to reflect the value of advanced skills and experience
About the Role:
We are seeking an exceptional Principal Infrastructure Engineer to design, build, operate, and scale the platform that powers Sezzle. Your focus will be the hardest infrastructure problems: increasing throughput, reducing latency, removing capacity bottlenecks, strengthening resilience, and making production operations more automated and predictable as the business grows.
You will own complex technical initiatives from architecture and prototyping through implementation, production rollout, and ongoing operation. Your impact will come from the systems you build, the problems you solve, and measurable improvements in reliability, performance, and cost efficiency.




Our stack runs on AWS , with workloads orchestrated on Kubernetes and data anchored in Aurora RDS (MySQL and Postgres) . You should know these technologies deeply and be comfortable moving between cloud architecture, networking, cluster internals, database performance, and application behavior to understand how the entire system scales. You will write code and infrastructure-as-code, debug production systems, and deliver changes that hold up under real traffic and failure conditions.
Operational ownership is part of the job. You will participate in the on-call rotation and take a hands‐on role in recovering from major incidents, including full outages. We need someone who can form and test hypotheses using logs, metrics, and traces, make sound mitigation decisions with incomplete information, and turn incident findings into lasting engineering fixes.
You will also build and apply AI-assis

📌 Principal Infrastructure Engineer New Mexico, Remote (Ciudad de México)
🏢 Sezzle
📍 Ciudad de México