Solution Account Manager

We are seeking a skilled and detail-oriented Java developer to join the Payments Engineering team. The candidate will work in a pod with 3-4 experienced Java developers and focus on adapting legacy applications for non-discretionary ISO20022 changes, which is a new financial messaging standard. An ideal candidate thrives in complex environments, is able to work under time pressure, is keen to understand business logic and excels at reverse engineering a complex code base to implement high-impact changes. Key Responsibilities: * Participate in requirements gathering sessions with business users * Participate in analysis, solution design and planning the work with the Engineering team * Implement and test changes, participate in code reviews, assist in UAT and code releases * Think outside the box when implementing changes and improve the stack as you go along. The position requires 4 days/week in the office. Qualifications: * A Bachelor's or Master's degree in a computational field (Computer Science, Engineering, Applied Mathematics or a related quantitative discipline) * 4+ years of relevant work experience. * A solid grasp of Java, Spring, Hibernate, and DB2 * Spring Boot — dependency injection, auto-configuration, Spring Data, Spring Security * Apache Kafka — producers, consumers, Kafka Streams (stateful processing, state stores, aggregation), and Kafka Connect * MongoDB — document modelling, Spring Data MongoDB * Maven — multi-module project management, dependency resolution, build lifecycle * Docker — containerization, image builds * RESTful API design and development * Experience with event-driven / microservices architectures in a distributed systems environment * Familiarity with Git and CI/CD pipelines (GitLab CI preferred) Preferred: * Angular * IBM MQ / JMS — queue managers, channels * Infrastructure as Code — infrastructure provisioning and management * ISO 20022 or financial messaging standards (SWIFT, CBPR+, FIN) * Python scripting * Experience in financial services, payments, or banking technology * Strong analytical skills * Ability to collaborate effectively and work in a global team * Ability to stay commercially focused, whilst not losing sight of code quality * Good communication skills. Strong work ethic, ownership, willingness to engage and be challenged

Senior Java Developer (TMS) Job Responsibilities: • Design and implementation of IT solutions based on the presented analytical and technical documentation; • Reviewing analytical documentation; • Creating technical documentation; • Technical upgrade for existing system; • Working with legacy code • Conducting regular scans of the application and removing vulnerabilities Job Requirements: • Fully available in the Polish time zone; • Ability to work from the office in Warsaw (weekly: 4 days at the office + 1 day WFH ); • Very good knowledge of Java 8+ and object-oriented programming issues; • Experience in independent design, implementation, documentation, and testing of application components; • Very good and practical knowledge of Spring, Spring Boot, Hibernate/JPA, and JEE frameworks; • Practical knowledge with message queue systems, particularly RabbitMQ; • Practical knowledge of tools supporting the software development process: Maven, Git, Gitlab, Gitlab CI/CD, Jenkins, Nexus, Jira; • Knowledge of relational databases, in particular Oracle; • Practical knowledge of RESTful API design; • Experience in system integration; • Experience with distributed systems; • Experience with application servers, JBoss/WildFly; · Knowledge of scanning tools (Fortify, Sonatype..) • Knowledge of English / B2; Description of the area of involvement: TMS (Terminal Management System) is used to manage a very large number of payment terminals (300k+). It gives users a uniform way to manage different terminals from different hardware vendors. TMS has a complex architecture, consisting of two components: TMS (1 WildFly instance), providing a GUI and implementing some business functions, and RTMS (3 Spring-boot instances), implementing most of the business functionalities. A gradual migration from TMS to RTMS is being carried out. The system intensively uses Spring, Hibernate, and RabbitMQ. The system has distributed transactions (different two-phase-commit, saga approaches) and a distributed cache (Hazelcast). TMS is integrated with many internal and external systems (via REST, SOAP, RMI, direct database connections, and database links). The GUI is written in GWT and GWTExt.