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September 12, 2026

Administrator PostreSQL/ Ekspert baz danych

Senior • On-site

Warsaw, Poland

Quick Facts

  • Senior Administrator PostgreSQL for a long-term project implementing a PostgreSQL-based authorization system.

Description

The role provides real impact on the quality and stability of the target solution, working in a demanding technical environment and supporting a business-critical initiative. You will administer and optimize highly available PostgreSQL environments, ensure performance/consistency/security of data, and support migration and go-live processes including rollback and post-production stabilization. Close collaboration with software vendors and internal development teams is required.

Responsibilities

  • Administration, configuration, and optimization of PostgreSQL environments for high-availability systems
  • Ensure high performance, data consistency, and security (performance tuning and query optimization)
  • Monitor, diagnose, and resolve database performance and stability issues
  • Prepare detailed rollout plans, data migration strategies, and rollback/stabilization procedures after production rollout
  • Support migration and integration processes in a heterogeneous technological environment
  • Participate in go-live preparation and execution and support the environment after production launch
  • Work closely with software vendors and internal development teams

Requirements

  • Experience in administration, configuration, and optimization of PostgreSQL in production environments
  • Practical experience with high-availability systems with reliability and performance requirements
  • Advanced ability to write and optimize complex SQL queries
  • Experience in performance tuning, analysis of performance problems, and optimization of the database engine
  • Practical knowledge of data migration methodologies and go-live management
  • Experience preparing deployment plans, rollback procedures, and stabilization actions after production deployment
  • Very good English knowledge (min. B2/C1)
  • Ability to support migration and integration processes in a heterogeneous technological environment

Benefits

  • Long-term, multi-year cooperation on a key project in the payments industry
  • Opportunity for development within the team and the whole group
  • Medical package and Multisport card

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