AppOps Application Administrator – DC Migration Programme

We are looking for an App. Ops 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, Power.

Shell, 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 Experience in payments, acquiring, or card processing environments Exposure to large-scale enterprise transformation programmes Experience working with middleware or integration layers Familiarity with release management and change governance processes Benefits Solid, competitive salary Work in a multinational environment on international projects Comprehensive healthcare Long-term B2B contract with a stable project pipeline Work model: Warsaw-based, primarily onsite with 1–2 remote days per month