Full Stack Engineer (Java & React)

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.

We are seeking React / Java Full Stack Engineer to join our Global Asset Servicing Platform team. This is a hands-on engineering role where you will design, build, and test features end-to-end – with full ownership of code and quality. 

You will work across development and test automation: coding new functionality, writing unit and integration tests, and adding Cucumber-based end-to-end tests – not only for your own work but also for features built by your teammates, to ensure unbiased validation.

• →Design, develop, and maintain features using Java and React.
• →Build responsive and modern frontend applications using ReactJS,
• →Develop and integrate APIs and web services.
• →Experience working with relational databases (Oracle, Postgres)
• →Write clean, well-structured unit tests (JUnit or equivalent) alongside your code.
• →Contribute to and maintain our automated test framework using Ruby and Cucumber:
• →Write new Ruby step definitions as needed.
• →Create and maintain Cucumber feature files for end-to-end testing.
• →Write automated tests for features developed by other engineers, ensuring high-quality outcomes and reducing development bias.
• →Champion a test-first approach, delivering code that is reliable, maintainable, and scalable.
• →Apply performance and scalability considerations; use tools such as JMeter for load/performance testing where required.
• →Ensure instrumentation, configuration, and logging are embedded in code to support ongoing monitoring and support.
• →Analyse and debug issues using logs; propose and implement fixes.
• →Collaborate in Agile ceremonies, helping the squad plan effectively and commit to clear sprint goals.
• →Partner with product managers and analysts to understand what is being built, why it matters, and how best to implement it for both functional and non-functional needs.
• →Build with a product mindset – appreciating client impact, configurability, and long-term supportability.

• Proficiency in:
• Java (with strong JUnit testing experience)
• React (with associated unit testing frameworks)
• Familiarity with automation frameworks & languages:
• Ruby scripting for step definitions
• Cucumber for end-to-end testing
• Strong understanding of:
• Multi-threading, parallel processing, and real-time messaging
• Test-first design, CI/CD practices
• Ability to use JMeter or similar tools for performance testing (a plus)
• Basic understanding of cloud services: databases, servers, storage, gateways (not at architect level, but practical awareness of hosting environments).
• Experience using AI-assisted engineering tools (such as GitHub Copilot, ChatGPT, or similar) to accelerate coding, testing, debugging, and documentation, while maintaining code quality and critical thinking.

• Familiarity with financial markets concepts.
• Knowledge of corporate actions lifecycle preferred.

• Strong analytical and debugging abilities.
• Clear communicator, able to articulate trade-offs and solutions to both technical and business audiences.
• Collaborative team player, comfortable working in agile, cross-functional squads.
• Curious and thoughtful: able to look beyond the ticket to understand requirements, impact, and broader context.
• Product mindset — balancing immediate delivery with long-term maintainability and client impact.

1. HR Interview with the recruiter
2. Technical Interview
3. Client Interview 
4. Feedback and offer

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