Architect, upgrade, design, and build scalable infrastructure solutions leveraging Kubernetes, AWS, RDS (MySQL/Postgres), and modern distributed patterns.
Help drive the infrastructure and engineering teams’ roadmaps, leading us to higher levels of reliability, recoverability, and scalability.
Find and fix issues across our systems before they become issues in production, through tooling, alerts, AI, collaboration with teams, whatever it takes.
Drive capacity planning, benchmarking, and work with the team to stress test our systems, find bottlenecks, and prepare for further growth in the business.
Define, maintain and enforce SLAs and alerts across our infrastructure.
Help Lead Sezzle’s AI enablement efforts, identifying opportunities to apply AI and automation to enhance infrastructure reliability, developer productivity, and internal tooling.
Build in consistency and scalability across a distributed microservices architecture while maintaining performance and reliability.
Establish and evolve engineering best practices for observability, security, and CI/CD across teams.
Mentor engineers and champion a culture of learning, innovation, and operational excellence.
Collaborate cross-functionally to translate business goals into technical roadmaps and deliver results that matter.

15+ years of professional software engineering or infrastructure engineering experience, including significant backend development and production engineering experience.
Deployed significant changes to a production application or infrastructure configuration in the past 30 days.
Strong proficiency in Golang, with experience building and maintaining RESTful APIs.
Deep expertise with SQL-based RDBMS (MySQL, PostgreSQL) and experience optimizing schema and queries for performance at scale.
Solid understanding of distributed systems design patterns (e.g., transactional outbox, event-driven architecture and stream processing, queues).
Demonstrated ability to bring new ideas forward, influence decisions, and lead complex technical initiatives.
Bachelor’s degree in Computer Science or equivalent practical experience.

Unlimited PTO, volunteer hours and sabbatical
Life, STD/LTD, medical, dental and vision insurance
Highly discounted LifeTime gym membership
401k with match
Collaborative fun co-workers
The opportunity to join the fastest growing FinTech alongside a team of motivated and driven individuals

Principal Engineer – Infrastructure

Key skills