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

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. Our secret? 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. We’re proud to be: • Trailblazers in banking, payments, capital markets, wealth, and asset management • Champions of an agile, nimble, and innovative work environment • Dedicated to building a team of top-notch professionals who share our drive and vision ROLE OVERVIEW   Build high-performance payment integrations at the core of a major cards transformation The Role 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.   What You’ll Do • Develop and configure integrations including ISO8583 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 What We’re Looking For • Experience delivering integration solutions in banking environments (POS/ATM/e-commerce and back-office systems) • Strong development experience with Java (17), Spring Boot, Kafka, OpenShift, and PostgreSQL • Proven ability to build reliable transactional systems with focus on consistency, idempotency, and observability • Experience working with ISO8583 messaging and complex payment integrations • Understanding of CI/CD, containerization, and modern development practices Bonus Points For • Experience designing and implementing PostgreSQL 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   IMPORTANT • 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. ONLINE RECRUITMENT PROCESS STEPS • Screening call with the Recruiter • Hiring Manager Technical Interview • Client stage • Feedback/Offer We offer a flexible collaboration model based on a B2B contract, with the opportunity to work on diverse projects.