Senior IBM App Connect Developer - Middleware

About CodeNinja CodeNinja is a full-stack AI and engineering delivery firm helping Saudi enterprises and government entities modernize systems and operationalize intelligence across mission-critical workflows. Through embedded engineering teams, AI labs, and global capability centers, CodeNinja builds sovereign AI systems and application infrastructure that clients own permanently — aligned with Vision 2030. CodeNinja operates across Saudi Arabia's priority sectors, including government digitization, energy, financial services, logistics, and healthcare, and is trusted by 240+ organizations across 15+ industries region-wide. About the Role We're hiring a Senior IBM App Connect Developer to design, build, and support enterprise integration solutions connecting a leading Saudi bank's core and peripheral systems. This is a hands-on middleware role requiring deep IBM ACE/IIB expertise and prior banking-sector delivery experience, working onsite in Saudi Arabia on a 6-month (extendable) engagement. Key Responsibilities - Design, develop, and deploy integration flows using IBM App Connect Enterprise (ACE) / IBM Integration Bus (IIB) - Build message flows and ESQL/Java transformations to integrate core banking and peripheral applications - Implement integrations over MQ, REST, SOAP, JMS, and file-based protocols - Configure and maintain IBM MQ queues, channels, and messaging infrastructure supporting integration flows - Ensure integration security, message reliability, and transactional integrity across interfaces - Perform capacity planning, performance tuning, and monitoring of middleware components - Diagnose and resolve production integration incidents with timely root-cause analysis - Document integration designs, interface specifications, and deployment procedures

Design, develop, and deploy integration flows using IBM App Connect Enterprise (ACE) / IBM Integration Bus (IIB). Build message flows and ESQL/Java transformations to integrate core banking and peripheral applications. Implement integrations over MQ, REST, SOAP, JMS, and file-based protocols. Configure and maintain IBM MQ queues, channels, and messaging infrastructure supporting integration flows. Ensure integration security, message reliability, and transactional integrity across interfaces. Perform capacity planning, performance tuning, and monitoring of middleware components. Diagnose and resolve production integration incidents with timely root-cause analysis. Document integration designs, interface specifications, and deployment procedures.