Middleware Engineer

Location: Warsaw, on-site (5 days per week from the Client's office) Tasks: Perform the role of Middleware Engineer for an application migration initiative within a large data center migration program Support applications serving payment card acceptance / acquiring and issuer processor business processes Work within a three‑tier architecture environment and support an extensive Middleware layer critical for service migration Collaborate closely with the FTS Application & Middleware Team to execute BAU tasks Work closely with Project Managers to drive build, testing and migration activities, including preparing and placing infrastructure build, configuration or access requests and removing blockers Diagnose and solve technical issues Monitor environments for performance and reliability Produce and maintain high‑quality live documentation in Confluence Requirements: Experience with application migrations and an understanding of challenges related to data center migration Knowledge of BMC Control‑M Knowledge of Oracle Application Express (APEX) Knowledge of Oracle Data Integrator 12c Knowledge of Oracle Internet Directory 11g / 12c Knowledge of Oracle Forms 11g / 12c Knowledge of Oracle Reports 11g / 12c Knowledge of Oracle Rest Data Service (ORDS) Knowledge of Oracle Service Bus 11g / 12c Knowledge of Oracle WebLogic 11g / 12c Strong PL/SQL skills Scripting skills in Perl / Powershell / Shell / Bash / Python Experience with Rundeck / Ansible Excellent communication skills in Polish and English Ability to work with SMEs from various countries and clearly present technical scope, challenges and solutions Understanding of availability, performance, monitoring and resilience for semi‑real‑time online transaction systems and mass transaction processing systems Understanding of infrastructure, networking, load balancing and TLS High responsibility, commitment to quality and delivering on obligations Ability to share knowledge, collaborate effectively, find compromises and build positive relationships in a local and corporate environment Ability to comply with the company’s office / remote work policy (currently 5 days per week in the office) Offer: Multisport card Private healthcare Group life insurance