Senior PostgreSQL / Data Engineer

We are looking for an experienced Senior PostgreSQL / Data Engineer to join a team building a high-performance, enterprise-grade data platform for the financial markets / FX domain.

This is a great opportunity for someone who enjoys working with large-scale data, complex PostgreSQL environments and near real-time processing. The platform handles approximately 40 million messages every day and provides up-to-date market data with refresh intervals as short as one second.

About the project

You will contribute to the design, development and optimization of a data platform responsible for:

• Processing data for 46 currency pairs
• Handling approximately 40 million messages per day
• Processing data in near real-time
• Managing large-scale data storage with 2-year retention
• Integrating the platform with messaging systems such as RabbitMQ
• Providing downstream teams with access to frequently refreshed data, with updates available every 1 second
• Ensuring high availability, scalability and performance
• Designing solutions capable of supporting large data volumes in a demanding financial environment

Must-have:

• Strong commercial experience with PostgreSQL
• Very good understanding of PostgreSQL architecture
• Hands-on experience with table partitioning
• Strong knowledge of database indexing and query optimization
• Experience with B-Tree, Hash, GIN, GiST and/or BRIN indexes
• Experience building or maintaining ETL processes
• Experience working with large-scale / Big Data environments
• Good knowledge of Linux
• Experience working with performance-critical database environments
• Fluent Polish and English

Nice to have:

• Python
• Kafka or RabbitMQ
• Apache Airflow
• CI/CD
• Experience in the banking, financial services or FX domain
• Experience with real-time or near real-time data processing

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