IT Consultant – Integration & Development – Cards Transformation; Polish is Mandatory; She​/He​/They

IT Consultant – Integration & Development – Cards Transformation (Polish is Mandatory) (She/He/They)

Poland

CAPCO POLAND

Location:
Warsaw, Poland

Pref. work model - 3x per week from office

At Capco Poland, we’re not just another consultancy – we’re the spark behind digital transformation in the financial world. As a global leader in technology and management consulting, we thrive on helping clients tackle the toughest challenges across banking, payments, capital markets, wealth, and asset management.

A culture that’s fast, flexible, and fiercely entrepreneurial. We move quickly, think creatively, and always put our people first. We’re passionate about growth – both for our clients and ourselves – and that means attracting the very best talent to join us on this exciting journey.

Build high-performance payment integrations at the core of a major cards transformation.

We are looking for an experienced IT Consultant/Developer to join a large-scale cards transformation programme for a leading Polish bank. You will design, build, and configure integrations across complex system landscapes, supporting transactional flows across POS, ATM, and e‑commerce channels. This role focuses on delivering reliable, scalable, and observable solutions using modern technologies while ensuring consistency and resilience across interfaces.

Fluency in Polish is mandatory.

• Develop and configure integrations including ISO
  8583 adapters, POS/ATM handlers, and system interfaces
• Implement data mapping, transformations, validation rules, and error handling (retries, idempotency)
• Build and maintain batch/ETL processes, data migrations, and reconciliation tools
• Implement logging, monitoring, and observability aligned with engineering standards
• Support SIT/UAT phases by resolving defects and ensuring system stability and performance

• Experience delivering integration solutions in banking environments (POS/ATM/e-commerce and back-office systems)
• Strong development experience with Java (17), Spring Boot, Kafka, Open Shift, and PostgreSQL
• Proven ability to build reliable transactional systems with focus on consistency, idempotency, and observability
• Experience working with ISO
  8583 messaging and complex payment integrations
• Understanding of CI/CD, containerization, and modern development practices

• Experience designing and implementing Postgre
  
  SQL data models (schemas, indexes, procedures)
• Experience supporting settlement processing, audit feeds, and reconciliation processes
• Familiarity with systems such as IPS, Visiona, INCAS, or ACI platforms (Interchange/Cardpack/Acquirer)
• Experience optimizing performance and ensuring data integrity across distributed systems
• Experience working in large-scale financial transformation programmes

• Fluent Polish (spoken and written) – mandatory
• Good command of English for documentation and collaboration.
• Availability to work on‑site, with partial remote work – 3 days per week from the office.

We offer a flexible collaboration model based on a B2B contract, with the opportunity to work on diverse projects.