AppOps Application Administrator – DC Migration Programme

Warsaw, Poland

PLN 192,000 – PLN 264,000

We are looking for an AppOps Application Administrator to join a large-scale data centre migration programme supporting critical payment processing systems. This is a production-critical role focused on ensuring stability, continuity, and reliability of application environments during migration activities. The platform supports high-volume transaction processing in card issuing and acquiring systems, operating in near real-time environments with strict requirements around availability and performance.

Responsibilities

Administer, configure, and maintain application environments supporting payment systems
Monitor application performance, stability, and operational continuity
Support application servers and resolve incidents or operational issues
Verify and implement production changes in controlled environments
Participate in application migration activities within the data centre programme
Collaborate with internal teams, external vendors, and international stakeholders
Support environment setup, configuration, and access preparation for migration phases
Diagnose and resolve technical issues impacting application environments
Maintain documentation and operational knowledge in Confluence

Requirements

Experience in application operations or application administration roles
Experience supporting environments during infrastructure or data centre migrations
Strong scripting skills in at least one of the following: Perl, PowerShell, Shell, Bash, or Python
Experience working with PL/SQL or T-SQL
Understanding of application infrastructure including networking, load balancing, TLS, and resilience
Experience supporting high-availability transaction systems
Knowledge of monitoring, performance optimisation, and reliability in transactional environments
Strong collaboration skills in international team setups
Fluent Polish and English

Nice to have