Senior Database Engineer (PostgreSQL, Snowflake, Cloud-Hosted Database Services)

***ONLY FOR CANDIDATES BASED IN POLAND***

Senior Database Enigneer | B2B | Poland | Remote

I'm currently looking for an experienced Senior Database Engineer ready to take on new challenges in their career!

My client is building the new operating system (O/S) for global finance. The company is growing fast, with $400B on the platform in 2025 and $1T in 2026. They are building "unified ledgers" with massive infrastructure (currently 20 million transactions per day, ready to scale up to 50 million). If you are looking for a challenging, greenfield/sandbox environment and working alongside experienced software engineers, this might be a role for you!

Details: B2B - 100% remote - 7,600$ - 7,900$ per month (international invoice, no VAT)

Senior Database Engineer - Role:

The role focuses on designing, optimising, and maintaining large-scale database environments, with particular emphasis on SQL performance tuning, indexing strategies, query optimisation, database scalability, and cost-efficiency improvements.

Senior Database Engineer - Requirements:

• 3–5+ years of hands-on PostgreSQL experience in production environments
• 3–5+ years of experience with Snowflake or equivalent data lake/warehouse technologies (e.g., Redshift, BigQuery, Databricks)
• Strong expertise in SQL query optimisation, indexing, partitioning, and execution plan analysis
• In-depth understanding of PostgreSQL internals (vacuum, checkpointing, WAL, MVCC, partitioning, etc.)
• Proficiency in database and warehouse performance tuning and cost optimisation techniques
• Experience with DevOps practices for databases, including automation, monitoring, and CI/CD integration (liquibase)
• Hands-on experience with cloud-hosted database services (AWS RDS/Aurora, Snowflake SaaS)

If you are interested in this role, please feel free to apply

Questions? Don't hesitate - ask - a.sawa@ltharper.com