Principal Engineer - Data Infrastructure

Sezzle is a fintech company revolutionizing shopping through interest-free installment plans, aiming to empower the next generation with innovative technology and seamless experiences. They are building a dynamic team passionate about creating impactful shopping journeys.

Location: Remote

Salary: $200,000–$300,000 USD per year

Responsibilities

• End to end ownership of data warehousing infrastructure, its KPIs and SLAs.
• Design, build, and optimize large-scale, high-performance data pipelines to support analytics, product insights, and operational workflows.
• Architect and evolve Sezzle’s data ecosystem, driving improvements in reliability, scalability, and efficiency.
• Help Sezzle evolve data systems beyond the current scale and stack with new tooling to handle high volumes of events and complex ETL.
• Lead development of ETL/ELT workflows using Redshift, DBT, AWS DMS, and related tools.
• Partner with cross-functional teams to gather or adapt requirements and deliver robust datasets.
• Evaluate and integrate new technologies, guiding the evolution of Sezzle’s data stack.
• Optimize Redshift and warehouse performance, including query tuning, modeling improvements, and cost management.

Requirements

• 12+ years of experience in data engineering with a strong track record of building and scaling production systems.
• Deep expertise with AWS Redshift or similar products, including performance tuning, table design, and workload management.
• Strong hands-on experience with ETL/ELT frameworks, especially DBT, AWS DMS, or similar tools.
• Proficiency in SQL (advanced) and at least one programming language such as Python, Scala, or Java.
• Experience building and maintaining AWS-based data platforms, including S3, Lambda, Glue, or EMR.
• Track record designing scalable, fault-tolerant data pipelines using modern orchestration tools processing more than 100GB - 1 TB of data daily.
• Strong understanding of data modeling, distributed systems, and warehouse/lake design patterns.
• Ability to work in a fast-paced, collaborative environment with excellent communication and documentation skills.

Benefits

• 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.
• Opportunity to join a fast-growing FinTech team.

Additional Information

• Sezzle is committed to privacy and equal employment opportunity, celebrating diversity and inclusion.