Principal Software Engineer

Sezzle is revolutionizing the shopping experience with interest-free installment plans, blending technology with seamless payment solutions. They are building an innovative team passionate about creating a unique shopping journey and redefining fintech and retail.

Location: Remote

Salary: $6,000 - $12,500 USD per month

Responsibilities

• Architect, design, and build scalable backend services and APIs primarily in Golang, leveraging AWS, RDS (MySQL/Postgres), and modern distributed patterns.
• Lead Sezzle’s AI enablement efforts, identifying opportunities to apply AI and automation to enhance developer productivity, internal tooling, and customer experiences.
• Partner with teams across the organization to integrate modern AI capabilities - Primarily around tools like Claude Code, Codex, Cursor and enhancing team productivity.
• Drive 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.

Requirements

• 12+ years of professional software engineering experience, including significant backend experience.
• Deployed significant changes to a production application in the past 30 days.
• Strong proficiency in Golang, with experience building and maintaining RESTful APIs.
• 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, queues).
• Demonstrated ability to bring new ideas forward, influence decisions, and lead complex technical initiatives.
• Bachelor’s degree in Computer Science.
• Demonstrated experience working with Claude or equivalent large language model tools.

Additional Information

• The salary range is $6,000 - $12,500 per month (Gross in USD).
• This is a full-time, remote position.
• The role is for a Principal Software Engineer with 12+ years of experience, focusing on backend development and AI/ML tooling.