We are looking for a skilled Java Integration Developer to join a transformative project in the digital business domain. You will be responsible for creating and developing integration services and APIs, designing and implementing integrations between systems, and collaborating with architects, analysts, and project teams. Your work will involve utilizing CI/CD automation and Kubernetes environments to ensure the quality, security, and performance of services. This role offers opportunities for further development in API management, asynchronous integrations, and orchestration. If you are passionate about systems integration and want to make an impact, this opportunity may be the right fit for you. Your tasks Designing, implementing, testing, and maintaining integration flows and APIs according to requirements and Definition of DoneActively participating in technical decision-making regarding integration and API implementation, considering architectural standardsEnsuring the quality, security, availability, and performance of delivered solutions, including diagnosing issues and addressing their root causesCollaborating with architects, analysts, Product Owners, and project teams to refine requirements and agree on solutionsParticipating in estimation, work planning, and analysis of technical risksSupporting team members in solving technical problems and sharing best practicesRegularly participating in code reviews and developing coding quality standards and software production automationRequirementsMinimum 4 years of commercial experience in developing applications in Java, including practical work with Java 21+ and Spring BootHands-on experience designing and implementing system integrations and APIs using REST, JSON, OpenAPI, OAuth 2.0, JWT, SOAP, and XMLPractical knowledge of asynchronous integrations using Apache Kafka, RabbitMQ, or another message brokerProficiency in implementing integrations using API Management platforms, including API publishing and securityBackground in developing solutions based on microservices architecture and deploying them in a Kubernetes environmentStrong understanding of CI/CD processes, particularly Bamboo or Jenkins, as well as Git/Bitbucket repositories; practical experience with deployment automation and JiraKnowledge of unit testing and Java testing frameworksSolid experience with PostgreSQL or Oracle databases, including creating and optimizing SQL queriesAbility to work independently, solve problems, and make technical decisions within projectsFluent Polish Nice to have Experience working with Microsoft Azure API Management or an equivalent solutionPractical experience with Docker, Kubernetes, and HelmKnowledge of Apache NiFi in integration solutionsJob no. JOB-G4BHVSii ensures that all hiring decisions are made solely on the basis of qualifications and competence. We are committed to equal and fair treatment of all, regardless of legally protected characteristics. At Sii, we promote a diverse and inclusive work environment, in full compliance with applicable anti-discrimination laws.Benefits For YouGreat Place to WorkSolid financial situationContracts with the biggest brandsCentre of internal trainingsMany experts you can learn fromOpen and accessible management teamProfit sharingPassion Sponsorship programRegular integration events and tripsComfortable and well-equipped officesMySii appMedical care

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Java Integration Developer (f/m/x)