• Perform SQL analysis, tuning, and database optimization (achieving up to 99% runtime reduction)
• Execute data migration activities across systems and environments
• Manage and implement migration from cluster to container architectures
• Introduce and configure Citus for distributed database scaling
• Design and build ETL pipelines to support data processing and integration
• Conduct application performance optimization to ensure stability and efficiency
• Support and collaborate in requirements management to align technical solutions with business needs
• Analyze and implement customer requirements in close coordination with stakeholders
• Support functional testing, including SQL-based test analysis
• Perform and assist in technical testing to validate solution performance and reliability

Do you have experience in SQL?, 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., * 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