BE | Shaping the Future Poland has a proven position of being a reliable partner for financial services organisations to analyse complex requirements, find solutions and implement them in their entirety, regardless of their complexity. Since the foundation of Be Poland in 2013, we have been continually expanding and customising our spectrum of services.We are seeking an experienced Middleware Engineer to manage and support IBM MQ and IIB / ACE middleware environments within a complex banking infrastructure. The successful candidate will be responsible for ensuring secure, reliable, and high-performance message flow across multiple financial applications. This position requires on-call support every second week to maintain operational continuity and respond to critical incidents.The role is fully remote.Responsibilities: Administer, configure, and maintain IBM MQ and IIB / ACE environments across multiple platforms and environments (development, testing, production). Monitor system performance, availability, and message flow to ensure stability and resilience of integration services. Troubleshoot and resolve issues related to messaging queues, channels, brokers, and integration components. Support deployments, upgrades, and patches of middleware components while minimizing downtime and risk. Implement and maintain security policies, certificates, and access controls for MQ/IIB infrastructure. Collaborate with application, network, and security teams to ensure seamless communication between systems. Provide on-call support every second week to handle production incidents and ensure continuous service availabity. Requirements:MQ Strong experience with IBM MQ clusters, installation, migration, and configuration Ability to set up new MQ environments for project delivery Solid knowledge of RDQM installation, configuration, and maintenance Skilled in diagnosing MQ issues, troubleshooting, and providing RCA Experience with MQ SSL certificate setup and management Familiar with MQ tools (MQMON,RFHUTIL) Understanding of messaging concepts (pub/sub, point-to-point) and MQ objects Knowledge of ITIL processes and handling SRs, incidents, changes, and problems within SLA Ability to produce technical documentation and support deployments IIB / ACE Support for IIB/ACE environments on Linux/Solaris Support for deployed message flows Ability to set up new IIB/ACE environments Experience with SOAP/REST APIs and XML/JSON Familiar with SSL/TLS and certificate configurations Hands-on experience with message flow development and support Proficiency in ESQL, Java, and integration patterns. Our offer: Competitive remuneration on B2B contract Access to Mindgram – mental health & well-being platform Free gym at Q22 Personal development – internal online / onsite DevTalks Referral bonus program International environment