Principal Software Engineer

• Proficiency in observability tools (Prometheus, Grafana, Datadog, New Relic). • observability tools • Experience with AWS cloud infrastructure, mainly AWS Aurora RDS, both MySQL and Postgres. • AWS cloud infrastructure • Experience in fintech, payments, BNPL, or consumer lending - familiarity with financial compliance, credit decisioning, or transaction processing systems. • fintech • Experience with CI/CD pipelines and containerized microservices (Docker, Kubernetes). • CI/CD pipelines • containerized microservices • Working knowledge of TypeScript, React, or React Native. • TypeScript • React • React Native • Familiarity with AI/ML tooling (e.g., OpenAI API, LangChain, Hugging Face, or custom LLM integrations). • AI/ML tooling • Track record of shipping commercial APIs and data-driven applications in high-growth environments. • commercial APIs and data-driven applications • Proven leadership in guiding technical direction, improving system reliability, and scaling engineering organizations. • You have relentlessly high standards - many people may think your standards are unreasonably high. You are continually raising the bar and driving those around you to deliver great results. You make sure that defects do not get sent down the line and that problems are fixed so they stay fixed. • You’re not bound by convention - your success—and much of the fun—lies in developing new ways to do things • You’re not bound by convention • You need action - speed matters in business. Many decisions and actions are reversible and do not need extensive study. We value calculated risk-taking. • You need action • You earn trust - you listen attentively, speak candidly, and treat others respectfully. • You earn trust • You have backbone; disagree, then commit - you can respectfully challenge decisions when you disagree, even when doing so is uncomfortable or exhausting. You have conviction and are tenacious. You do not compromise for the sake of social cohesion. Once a decision is determined, you commit wholly. • You have backbone; disagree, then commit • You deliver results - you focus on the key inputs and deliver them with the right quality and in a timely fashion. Despite setbacks, you rise to the occasion and never settle. • You deliver results • Sezzle’s Technology Stack: • Languages: Golang, Typescript, Python • Languages: • Frontend: Typescript - React and React Native • Frontend: • Backend: Golang • Backend: • Database: MySQL, Postgres, Elasticsearch • Database: • DevOps & Cloud: AWS, Kubernetes • DevOps & Cloud: • Version Control: Git • Version Control: • CI/CD: • Testing: Developer and AI-driven, focus on automated end-to-end, integration, and unit tests • Testing: • Open Source: Sezzle is focused on using open source, and we build what we can before buying! • Open Source: • What Makes Working at Sezzle Awesome? • At Sezzle, we are more than just brilliant engineers, passionate data enthusiasts, out-of-the-box thinkers, and determined innovators; we are skilled musicians, yogis, cyclists, chefs, golfers, dog-lovers, and rock-climbers. We believe in surrounding ourselves with not only the best and the brightest individuals, but those that are unique and purpose-driven in all that they do. Our culture is not defined by a certain set of perks designed to give the illusion of the traditional startup culture, but rather, it is the visible example living in every employee that we hire.