Senior IBM App Connect Developer - Middleware

About CodeNinjaCodeNinja 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 RoleWe'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 ResponsibilitiesDesign, 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 applicationsImplement integrations over MQ, REST, SOAP, JMS, and file-based protocolsConfigure and maintain IBM MQ queues, channels, and messaging infrastructure supporting integration flowsEnsure integration security, message reliability, and transactional integrity across interfacesPerform capacity planning, performance tuning, and monitoring of middleware componentsDiagnose and resolve production integration incidents with timely root-cause analysisDocument integration designs, interface specifications, and deployment proceduresRequirementsMust-Have Requirements7+ years of hands-on experience with IBM App Connect Enterprise (ACE) or IBM Integration Bus (IIB)Strong knowledge of ESQL, message flow design, and IBM MQProficiency in Java, XML/XSD, REST, and SOAP web servicesMandatory prior experience delivering middleware/integration solutions within a bank or financial institutionExperience with WebSphere and Linux/Unix environmentsStrong troubleshooting skills for production integration issuesNice to HaveExperience with Apache Kafka or other event-streaming platformsExposure to API Gateway/API Connect solutionsIBM App Connect / Integration Bus certificationWhy Join UsWork on mission-critical integration systems for a leading Saudi banking clientBe part of CodeNinja's forward-deployed engineering model, recognized among Clutch's 100 fastest-growing technology companies of 2026Direct exposure to enterprise-scale banking infrastructure and Vision 2030-aligned digital transformation workCompetitive contract terms with extension potentialDisclaimerThis job description is intended to convey information essential to understanding the scope of the role and is not exhaustive of all responsibilities, skills, or qualifications required. CodeNinja reserves the right to modify duties and responsibilities at any time.