Join a mobile corporate banking initiative delivering customer-facing functionality for corporate users: account overview, payment initiation/approvals, document access, notifications, and reporting. The product is mobile-first and API-driven, with a strong focus on security, scalability, and seamless integration with back-office systems.Key responsibilities: Gather business needs and translate them into functional and non-functional requirements Define and document IT solutions for mobile and web channels Specify API integrations (REST/SOAP) and produce OpenAPI/Swagger contracts Model processes, data flows, and state diagrams (UML/BPMN in Enterprise Architect or similar) Create functional specifications, use cases, acceptance criteria, and test artefacts Validate integration flows using Postman, Swagger, SOAP UI, SQL Work closely with product, UX, development, and QA teams in Agile delivery Requirements: 5+ years’ experience as a System Analyst on medium/large IT projects Practical experience with mobile or internet banking solutions Strong UML/BPMN/system modelling skills (Enterprise Architect preferred) Hands-on API knowledge (REST, SOAP) with Postman/Swagger/SOAP UI SQL proficiency for validation and troubleshooting Experience in Agile (Scrum) teams Fluent Polish & business-level English (B2+) Strong analytical and communication skills Nice to have: Knowledge of microservices, event-driven patterns (Kafka) Experience with mobile backend specifics (push, offline sync, latency handling) Familiarity with DevOps/CI/CD and automated testing Understanding of UX principles for mobile Benefits: Competitive salary Flexible hybrid model (1 day/week on-site in Gdańsk) Long-term B2B contract with stable project pipeline Work on a high-impact corporate banking product used by thousands of business clients Comprehensive healthcare