We are looking for a Middleware Engineer to join a
data centre migration programme supporting critical payment processing systems.
This role sits within the core engineering stream responsible for ensuring
stability, integration, and successful migration of high-volume transactional
platforms. The systems support payment card acceptance, acquiring
services, and issuer processing, operating in real-time environments with
strict requirements around availability, performance, and reliability.
Responsibilities
data centre migration programme supporting critical payment processing systems.
This role sits within the core engineering stream responsible for ensuring
stability, integration, and successful migration of high-volume transactional
platforms. The systems support payment card acceptance, acquiring
services, and issuer processing, operating in real-time environments with
strict requirements around availability, performance, and reliability.
Responsibilities
- Support middleware environments used by payment processing
platforms - Build, configure, and prepare middleware components for migration
- Collaborate with application and middleware teams on BAU and
migration activities - Support environment setup, configuration, and access preparation
- Diagnose and resolve technical issues impacting middleware
platforms - Monitor environments to ensure performance, reliability, and
stability - Support testing and migration phases within the data centre
programme - Maintain operational
documentation in Confluence
Requirements
- Strong experience with Oracle middleware and integration environments
- Hands-on experience with WebLogic Server (11g or 12c)
- Experience with Oracle Service Bus
- Experience with Oracle Forms and Oracle Reports
- Experience with Oracle REST Data Services (ORDS)
- Experience with Oracle Data Integrator
- Experience with Oracle Internet Directory
- Strong PL/SQL knowledge
- Scripting skills in Perl, PowerShell, Shell, Bash, or Python
- Experience with automation tools such as Rundeck or Ansible
- Experience with enterprise scheduling tools such as BMC Control-M
- Experience supporting application or data centre migration programmes
- Understanding of performance, monitoring, resilience, and availability in
high-transaction environments - Understanding of infrastructure concepts including networking, load
balancing, and TLS - Ability to collaborate
effectively with international engineering teams
Nice to have
- Experience in payments, acquiring, or financial
transaction systems - Exposure to large-scale enterprise transformation
programmes - Experience working in regulated or
high-availability environments - 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