Brazil, Remote Employment $6,000 - $12,500 per month

Sezzle is hiring a Principal Engineer - Data Infrastructure

About the Role

What You'll Do

Take full responsibility for the design, operation, and advancement of our core data infrastructure, including relational databases, data warehouses, and change data capture systems. You'll ensure high availability, performance, and scalability across MySQL, Postgres, and Redshift, setting clear KPIs and SLAs to maintain system integrity.

Drive performance improvements through query optimization, indexing strategies, and schema refinement. Develop internal tooling to automate upgrades, streamline management, and support seamless migrations as data volume and complexity grow.

Collaborate closely with engineering teams to ensure database designs align with product requirements and long-term scalability. Guide the adoption of modern data practices, evaluating and integrating new technologies that support high-throughput writes, event processing, and complex ETL workflows.

Support data engineers and analysts by improving warehouse efficiency—tuning queries, refining data models, and managing compute costs. Help shape the future of our data platform by exploring next-generation solutions for distributed storage, streaming, and analytics.

Requirements

  • 12+ years of hands-on experience in database administration, site reliability engineering, or data engineering, with proven success scaling production systems under heavy load
  • Deep technical knowledge of MySQL, Postgres, and AWS Redshift or comparable data warehouse technologies, including performance tuning and workload management
  • Proficiency in SQL and data modeling, with experience designing efficient table structures and access patterns
  • Extensive background with ETL/ELT frameworks such as DBT and AWS DMS, and strong scripting skills in Python or similar languages
  • Understanding of distributed systems, replication protocols, and data consistency models
  • Excellent communication skills, with the ability to document systems clearly and work effectively across technical teams

Preferred Qualifications

  • Experience in fintech or other regulated, high-data-volume environments
  • Familiarity with modern data lakehouse platforms such as Snowflake, Databricks, Iceberg, or Delta Lake
  • Experience building scalable data pipelines using orchestration tools like Airflow, Dagster, or Prefect, handling 100GB to 1TB of daily data ingestion
  • Knowledge of streaming systems including Kafka, Kinesis, Flink, or Spark Streaming
  • Interest in leveraging AI tools to enhance engineering productivity and system observability

Technical Environment

Our stack includes MySQL, Postgres, Redshift, AWS Aurora RDS, AWS DMS, DBT, Elasticsearch, Golang, Python, TypeScript, Kubernetes, Git, GitLab, Airflow, Dagster, Prefect, Kafka, Kinesis, Flink, Spark Streaming, Snowflake, Databricks, Iceberg, and Delta Lake.

Compensation

Monthly gross salary ranges from $6,000 to $12,500 USD, adjusted for experience level and geographic location.

Required Skills
MySQLPostgresRedshiftAWS Aurora RDSAWS DMSDBTElasticsearchGolangTypescriptPythonSQLData ModelingDistributed SystemsETL/ELTData Warehouse MySQLPostgresRedshiftAWS Aurora RDSAWS DMSDBTElasticsearchGolangTypescriptPythonSQLData ModelingDistributed SystemsETL/ELTData Warehouse
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About company
Sezzle
Sezzle is revolutionizing the shopping experience beyond payments, blending cutting-edge tech with seamless, interest-free installment plans that make shopping smarter and more accessible. The company is redefining how people discover, interact with, and purchase the things they love while driving real impact on merchant sales.
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Posted 5 hours ago