Database Engineer (working with PostgreSQL)

ipracujzdalnie.pl; Warszawa; On-site; PLN 200,000 - 280,000; Full time

Benefits offered by this job

Medical care

Insurance

Sports card

Job summary

ipracujzdalnie.pl in Warsaw seeks a Database Engineer focusing on PostgreSQL. You will work on data warehouses, large-scale datasets, and multi-cloud deployments in AWS and GCP, optimizing queries and managing MVCC aspects.

You will analyze execution plans, tune long-running processes, and use extensions like pg_stat_statements to identify bottlenecks, delivering robust, scalable data solutions for finance-grade applications.

Qualifications

• At least 5 years of experience in a similar role.
• Strong PostgreSQL knowledge and experience.
• Experience with structures containing billions of records and TBs of data.
• Ability to optimize long-running queries and processes.
• Familiarity with stored procedures and using them effectively.

Responsibilities

• Work on PostgreSQL-based projects, data warehouses and large data volumes.
• Co-develop banking applications for revenue management and stock reconciliation in a multi-cloud environment (AWS/GCP).
• Develop competencies in DWH, data integration and database solutions.
• Advance PostgreSQL engine management, MVCC and custom indexes (BRIN).

Skills

PostgreSQL

Python

SQL performance tuning

Data analysis

Production support (L2)

Query plans analysis

Stored procedures

English (B2/C1)

Tools

pg_stat_statements

BRIN indexes

AWS

GCP

Job description

Our client is an innovative company that has been dynamically contributing to the digitalization processes of enterprises, offering advanced solutions in the areas of Big Data, Kubernetes, cloud services, and microservices technology. Through collaboration with certified partners, such as the Snowflake platform, the company enables its clients to effectively implement and integrate cutting-edge technologies, supporting them in becoming more competitive in the digital market. We are looking for talented IT specialists who would like to join our team and work on digital transformation projects, cloud solution implementations, Kubernetes cluster audits and optimizations, as well as developing platforms for ESG reporting and commission calculation automation. If you are ready for challenges in a rapidly developing industry and want to have a real impact on shaping the future of technology, join us!

Database Engineer (working with PostgreSQL)

location: Warszawa

Position Description

• Working on projects based on PostgreSQL, data warehouses, and systems processing very large volumes of information
• Co-developing a key banking application responsible for revenue management and stock reconciliation, working in a unique multi-cloud environment (AWS and GCP)
• Developing competencies in DWH, data integration, and database solutions
• Working on advanced PostgreSQL engine management, including MVCC mechanisms (Xmin/Xmax), Vacuum processes, and the selection of custom indexes such as BRIN

We Expect You Have

• At least 5 years of experience on similar position
• Good PostgreSQL knowledge
• Working with structures containing billions of records and terabytes of data, understanding how to ensure their efficient processing
• Optimizing queries and long-running processes, even those lasting many hours
• Ability to analyze query execution plans and quickly identify bottlenecks
• Familiarity with working with stored procedures and the ability to use them effectively
• Good knowledge of Python
• Ability to handle L2-level performance problem solving
• Ability to analyze data and problems from various sourcesAbility to analyze system logs and use extensions such as pg_stat_statements to identify blocking processes and bottlenecks.
• Knowledge of data partitioning (especially by date) to optimize searches in terabyte-sized tables
• Experience working at the L2 level, i.e., solving problems and maintaining processes in a production environment
• Very good English skills (B2/C1)

We Offer

• Attractive salary
• Clear plan and support for professional development;
• Technological and development challenges, including in the areas of data and data analysis;
• Benefits package: medical care, insurance, sports card;
• Unrivaled working atmosphere.