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Type of contract: B2B contract Salary range: 136 - 170 PLN/H What will you do? You will work on the development, maintenance, and enhancement of enterprise integration solutions, ensuring reliable communication between systems and supporting critical business processes. You will collaborate with development and operations teams to deliver scalable and secure integrations in an international environment. Your tasks Design, develop and maintain integration solutions using IBM App Connect Enterprise (ACE12) Build and support messaging solutions based on IBM MQ Develop and maintain Python scripts for automation and operational tasks Manage source code and deployment pipelines using GitHub and Jenkins Perform database queries and data analysis using DB2 SQL Monitor, troubleshoot and resolve integration-related incidents Collaborate with business and technical stakeholders to deliver integration requirements Support application deployments and production environments on Unix/Linux platforms Requiements Experience with IBM Message Broker / IBM App Connect Enterprise (ACE12) Experience with GitHub Experience with Jenkins Experience with Python scripting Basic Unix/Linux knowledge Experience with IBM MQ SQL knowledge, especially DB2 Business-fluent English Availability for occasional business travel to Germany Nice to have Experience with enterprise system integrations Knowledge of CI/CD best practices Experience in banking or financial services environments