Database Performance Engineer - PostgreSQL m/f/d,For our client in the banking sector based in
Basel, we are looking for an experienced, motivated, and open-minded
Database Performance Engineer with
strong expertise in
PostgreSQL.
Your tasks: - Analyze ingestion and transformation workloads to identify performance bottlenecks and inefficiencies
- Evaluate the use of Citus vs. native PostgreSQL features, especially in single-node setups
- Conduct performance experiments comparing columnar and row-based storage
- Optimize query planning, indexing, parallelization, and memory/I/O usage
- Develop improved ingestion and transformation patterns using PostgreSQL and Citus features
- Set up and enhance observability tools (e.g., pg_stat_statements, auto_explain, pgBadger)
- Deliver actionable recommendations to improve performance, scalability, and maintainability
Your profil: - Deep expertise in PostgreSQL internals and query handling
- Strong understanding of database performance, data management, and SQL optimization
- Experience with analytical workloads and update-heavy scenarios
- Hands-on experience designing and interpreting performance experiments
- Familiarity with observability tools and performance metrics
- Strong SQL and data modeling skills
- Experience with Citus, including columnar storage, is a strong plus
- Fluent in English
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