Database / Query Processing Developer

3+ years of experience

Ukraine, Europe

Fulltime, remote

Our client is a global enterprise software provider, serving over 1,500 customers across financial services, government, media, and IT. They offer enterprise-grade PostgreSQL solutions, managed cloud services, and 24/7 support, enabling application modernization, database migration from legacy systems, and hybrid/multi-cloud deployments. Their platform unifies transactional, analytical, and AI workloads while ensuring security, compliance, and high availability, with built-in AI capabilities.

We are looking for a Database / Query Processing Developer to work on query execution, query planning and performance optimization for a large-scale analytical database platform based on a PostgreSQL fork. The role focuses on improving analytical performance and optimizing complex SQL workloads in a distributed, MPP-based environment.

Responsibilities

Design and optimize query execution and planning logic.
Work on query execution plans and optimizers.
Improve performance of complex analytical SQL workloads.
Analyze and tune large-scale data processing queries.
Collaborate with kernel and distributed systems engineers.
Contribute to the core analytics engine.

Requirements

Strong understanding of query processing, execution plans and optimizers.
Experience working with SQL-based databases (PostgreSQL, Oracle, SQL Server, Vertica or similar).
Solid engineering and analytical skills.
Experience with C and / or C++, or readiness to work at this level.
Ability to work independently on complex systems.