Manual Tester – Integrations of Banking Systems (Polish is Mandatory) (She/He/They)

We are looking for a Manual Tester with experience in banking systems and integrations to support large-scale card issuing and payments transformation programmes. You will be responsible for validating integrations and data flows between the new card issuing platform and a wide range of banking systems, digital channels, and enterprise platforms.

Working closely with business, technology, and integration teams, you will execute end-to-end testing activities, validate messages and interfaces, and ensure the accuracy and reliability of critical business processes across the banking ecosystem.

• →Execute manual testing activities for integrations between the Vision platform and the Bank’s internal and external systems
• →Validate data flows between card issuing systems, mobile and web applications, ESB/Omnichannel platforms, general ledger systems, and digital channels
• →Verify files, interfaces, messages, APIs, and input/output data across assigned business process scopes
• →Document test execution results, log and retest defects, and maintain testing evidence and traceability
• →Support SIT, regression, and end-to-end testing activities in collaboration with business, development, and integration teams

• Experience performing integration or system testing within banking, cards, or payments environments
• Understanding of banking system integrations, enterprise applications, and end-to-end transaction flows
• Experience validating interfaces, APIs, files, messages, and data mappings
• Familiarity with test management and defect tracking tools such as JIRA, HP ALM, or similar platforms
• Strong analytical and communication skills with attention to detail and quality assurance best practices
• Experience working with card issuing platforms or payment processing systems
• Knowledge of ESB, Omnichannel, middleware, or API integration technologies
• Exposure to mobile banking or digital channel testing
• Understanding of message formats such as ISO 8583, XML, JSON, or batch file processing
• ISTQB certification or equivalent testing qualification

• Fluent Polish (spoken and written) is 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 in Warsaw

• Screening call with the Recruiter
• Hiring Manager Technical Interview
• Client Interview 
• 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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