Middleware Engineer – DC Migration Programme

Madiff • Information Technology • Property Development • Python • SQL • PowerShell • Bash • Perl • Oracle Data Integrator • 1 day ago
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Location
In office (Warsaw)
Employment
Full-Time

Confirmed on the employer's own hiring board on Oct 10, 2026. First seen by Alion on Oct 9, 2026.

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Madiff

Madiff is an IT consulting and staff augmentation company that provides remote agile teams, nearshore development teams and individual IT contractors to enterprise clients, with most of its hiring run from Warsaw. It works across retail, banking and insurance, telecom and media, automotive, energy, transportation and life sciences, recruits consultants in Poland and Portugal and sells its services into the UK, Ireland, France, Switzerland, Northern Europe and the US. Its openings cover .NET and full stack developers, data engineers and data scientists, AI architects, system and business analysts, QA testers, project managers and IT sales staff.
madiff.eu • HQ: Warsaw, Poland • Property Development • Information Technology • IT Consulting & Digital Transformation • 51-200 employees

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

  • 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

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