April 24, 2026

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

Senior • Hybrid

Warsaw, 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.

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.

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Remote

Warsaw, Poland

🏢 Summary: Lead Software Engineer role focused on building and enhancing a strategic risk and P&L platform for Financial Markets within an investment banking environment. The position involves designing and developing scalable, robust, and fault-tolerant rich desktop applications using modern engineering practices. The role also includes ownership of high-quality code delivery, test automation, and production support in an Agile setup. 🗂️ Requirements: 12+ years of C# development experience, Strong experience with WPF and .NET for rich desktop applications, Experience in investment banking IT, Experience with multithreading and asynchronous programming, Experience with MVVM architecture, Experience with Dependency Injection, Experience with REST APIs and message queues, Experience with unit testing and test-driven development, Experience with CI/CD pipelines, Experience working in Agile/Scrum teams, Poland-based candidate 📃 Skills: C#, WPF, .NET, TPL, Rx, MVVM, Prism, Unity, LINQ, REST, ActiveMQ, DevExpress, Infragistics, OOP, NUnit, Moq, TDD, BDD, UIAutomation, AzureDevOps, CICD, Agile, Scrum, VisualStudio, ReSharper 🏢 Description: *We are looking for Poland based candidate. 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. PROJECT OVERWIEW: The team is working on Client's strategic risk and Profit and Loss platform for Financial Markets. The development team is a world class technology group in the bank to provide technical solutions to support the bank’s Financial Markets business as well as support requirements from other projects with a wider scope such as regulatory books of work. We bring a deep understanding of the market, a scientific approach, and innovative technologies to bear on the challenges of profitable trading in the world's highly competitive environment. ROLE OVERVIEW: We're looking for a Lead Software Engineer who will play a strategic role in the implementation of highly visible strategic programs with the primary responsibilities around building components within the risk platform. Any developed solution must be scalable, robust and fault tolerant catering to the existing and future business needs in a timely manner. In addition, they will be expected to develop innovative solutions with a view to these being released quickly to gain feedback before advising on the full scale roll out. KEY RESPONSIBILITIES: Working closely with the Development Manager, Project Manager, and a team of developers to deliver quality features and enhancements to the internal business users. Writing robust code along with a high-level of test coverage. Designing smart and scalable solutions following the bank standards. Developing, preparing and maintaining system documentation, including program descriptions and operational procedures. Acting as the second line of support during production problems. REQUIRED SKILLS & QUALIFICATIONS: 12+ years of C#/WPF/.NET development experience building performance critical rich desktop applications Hands on experience within investment banking IT Strong knowledge and experience of working in Agile teams with Agile practices Good judgement and decision-making skills with a pragmatic and common-sense approach to solving problems Strong problem-solving and analytical skills Excellent communication and interpersonal skills, with the ability to build and maintain relationships with all stakeholders Ability to work in a fast-paced front-office environment Ability to prioritize and work on multiple workstreams simultaneously Ability to take ownership of issues and projects, and see them through to delivery TECHNICAL COMPETENCIES: C#/ WPF/ .NET development of rich desktop applications Multithreaded, concurrent, and asynchronous programming using TPL and Rx MVVM frameworks, preferably Prism Dependency Injection containers, preferably Unity LINQ/Rx with a functional mindset and coding style RESTful APIs and message queues such as ActiveMQ DevExpress, Infragistics, or any other popular WPF component library Object-Oriented Design and Programming (OOD/OOP) NUnit, Moq, TDD, BDD, UI Automation CI/CD Pipelines such as Azure DevOps Agile/Scrum practices Visual Studio and ReSharper We offer a flexible collaboration model based on a B2B contract, with the opportunity to work on diverse projects. RECRUITMENT PROCESS: HR interview with the recruiter Technical interview with Capco Engineering team Client interview Feedback and offer

Technology

Capco Poland

Senior .NET Engineer (Sun-Thu work schedule) (She/ He/ They)

Senior

Remote

Warsaw, Poland

🏢 Summary: Remote Senior .NET Developer role (EST hours) focused on designing and enhancing backend services for a banking trading platform, with strong emphasis on .NET and Oracle PL/SQL development in an Agile environment. The position involves building scalable integrations and maintaining critical trading functionalities. It targets experienced backend engineers within financial services. 🗂️ Requirements: 6+ years backend development experience, Strong experience with .NET Framework, Strong experience with C#, Solid expertise in Oracle PL/SQL, Experience with REST APIs, Experience with distributed application architectures, Experience in enterprise or financial services environments, Ability to work in Agile teams, Poland based candidate, Availability to work EST hours 📃 Skills: .NET, C#, Oracle, PLSQL, REST, SQL, CI/CD, Git, Agile 🏢 Description: *We are looking for Poland based candidate. The job is remote with EST working hours. 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. Build scalable backend solutions powering the next generation of digital trading experiences. The Role We are looking for a Senior .NET Developer to join a high-performing delivery team supporting the enhancement and expansion of a leading banking client’s trading application platform. You will play a key role in designing, developing, and maintaining backend services and integrations that support critical trading functionality and business operations. This role is ideal for someone with strong backend engineering expertise, solid database development experience, and a collaborative mindset who enjoys working in fast-paced Agile delivery environments. What You’ll Do Design, develop, and maintain backend services and APIs using .NET Framework technologies Develop and optimize Oracle PL/SQL packages, procedures, functions, and database objects Collaborate with cross-functional teams including QA, business analysts, and frontend developers to deliver new trading platform features Participate in code reviews, technical design discussions, and release activities to ensure high-quality software delivery Troubleshoot production issues, identify performance improvements, and support ongoing platform stability What We’re Looking For 6+ years of backend development experience within enterprise or financial services environments Strong hands-on experience with .NET Framework and C# application development Solid expertise in Oracle PL/SQL development and database optimization Experience working with REST APIs, integrations, and distributed application architectures Strong problem-solving, communication, and stakeholder collaboration skills within Agile teams Bonus Points For Experience working on trading platforms, banking systems, or capital markets applications Familiarity with performance tuning and query optimization in Oracle databases Exposure to CI/CD pipelines, source control tools, and automated deployment processes Understanding of secure coding standards and enterprise application best practices We offer a flexible collaboration model based on a B2B contract, with the opportunity to work on diverse projects. Recruitment Process: HR Interview with the recruiter Technical Interview Client Interview Feedback and offer