Java Software Engineer / E

We are looking for a Java Software Engineer to join our team responsible for backend development and the integration of banking systems. In this role, you will focus on designing, developing, and maintaining integration services using Java, REST APIs, and asynchronous messaging technologies such as Kafka or RabbitMQ. You will also contribute to integrations between Calypso and PayHub. The project operates within a banking environment with high requirements for software quality, reliability, and system integration. You will work closely with analysts, testers, and other technical teams to deliver and enhance business-critical solutions. Your responsibilities: Develop and maintain backend components using Java. Design and implement integrations between Calypso and PayHub. Design, develop, and maintain REST APIs. Implement asynchronous communication using Kafka or RabbitMQ. Analyze and troubleshoot integration and production issues. Work with PostgreSQL, including creating and analyzing SQL queries. Participate in requirements analysis and the implementation of new functionalities. Collaborate closely with business/system analysts, testers, and other technical teams. Support integration testing and deployments of new solution versions. Contribute to the reliability and quality of integrations within the banking ecosystem. Must-have requirements: Minimum 3 years of commercial experience with Java. Hands-on experience in developing and maintaining backend applications. Practical knowledge of REST APIs and system integrations. Experience with Kafka or RabbitMQ. Good knowledge of PostgreSQL and SQL. Experience in analyzing and troubleshooting integration-related issues. Understanding of synchronous and asynchronous communication. Good teamwork and communication skills, including cooperation with analysts and testers. Understanding of the Software Development Life Cycle (SDLC). Nice to have: Experience working on banking or financial projects. Experience with integration projects involving enterprise-class systems. Knowledge of payment processes and payment systems. Experience with event-driven architecture. Understanding of integration performance, reliability, and resilience. Experience analyzing logs and diagnosing production issues. Experience working in an Agile/Scrum environment. Hybrid work model: 2 days from the office, 3 days of home office. Office location: Poznań. Thank you for your interest in our offer. We will contact selected candidates whose experience best matches the requirements of the role. Additional Information We hereby inform you that Inetum Polska sp. z o.o. has implemented an internal reporting (whistleblowing) procedure. The content of the procedure and the possibility to submit an internal report are available at: Inetum Polska is part of the global Inetum Group and plays a key role in driving the digital transformation of businesses and public institutions. Operating in cities such as Warsaw, Poznan, Katowice, Lublin, Rzeszow, Lodz the company offers a wide range of IT services. Inetum Polska actively supports employee development by fully funding training, certifications, and participation in technology conferences. Additionally, the company is involved in local social initiatives, such as charitable projects and promoting an active lifestyle. It prides itself on fostering a diverse and inclusive work environment, ensuring equal opportunities for all. Globally, Inetum operates in 19 countries and employs over 28,000 professionals. The company focuses on four key areas: Consulting (Inetum Consulting): Strategic advisory services that help organizations define and implement innovative solutions. Infrastructure and Application Management (Inetum Technologies): Designing and managing IT systems tailored to clients’ individual needs. Software Implementation (Inetum Solutions): Deploying partner solutions from industry leaders like Microsoft, SAP, Salesforce, and ServiceNow. Custom Software Development (Inetum Software): Creating unique software solutions to meet specific client needs. With strategic partnerships with major technology giants, including Microsoft, SAP, Salesforce, and ServiceNow, Inetum delivers advanced technological solutions tailored to customer requirements. In 2023, Inetum reported revenues of €2.5 billion, underscoring its strong position in the digital services market. Inetum distinguishes itself by offering a comprehensive range of benefits that meet the diverse needs of employees, providing flexibility, support and commitment. Here's what makes working at Inetum unique: Attractive financial benefits: A cafeteria system that allows employees to personalize benefits by choosing from a variety of options. Generous referral bonuses, offering up to PLN6,000 for referring specialists. Additional revenue sharing opportunities for initiating partnerships with new clients. Professional development and team support: Ongoing guidance from a dedicated Team Manager for each employee. Tailored technical mentoring from an assigned technical leader, depending on individual expertise and project needs. Community and Well-Being: Dedicated team-building budget for online and on-site team events. Opportunities to participate in charitable initiatives and local sports programs. A supportive and inclusive work culture with an emphasis on diversity and mutual respect.