Now Hiring | Senior SAP S/4HANA Software EngineerLocation: ACTContract: Initial 12 months + 2 x 12-month extension optionsWork Arrangement: OnsiteClearance: Must be have or be able to obtain Baseline ASAPLevel: Senior / EL1 equivalentWe are currently seeking an experienced Senior SAP S/4HANA Software Engineer to support a major SAP modernisation and integration program with our large Australian client. This opportunity sits within a complex enterprise environment undergoing significant transformation from SAP ECC6 to SAP S/4HANA, with a strong focus on building secure, scalable, and future-ready integration capability across critical business systems.This role is best suited to a senior SAP BTP Integration specialist who can operate across architecture, design, and hands-on delivery. You will play a key role in developing and supporting integrations between SAP ECC6, SAP S/4HANA, other SAP platforms, and non-SAP enterprise systems using SAP BTP Integration Suite, while ensuring solutions align to enterprise standards for security, reliability, scalability, and long-term reuse. The role will involve designing modern API-led and event-driven integration patterns, enabling secure connectivity across multiple environments, and contributing to a broader integration strategy that supports ongoing digital transformation.Key responsibilities include:Designing and implementing integration solutions using SAP BTP Integration SuiteDeveloping integrations across SAP ECC6, SAP S/4HANA, other SAP platforms, and non-SAP applicationsBuilding secure, reusable APIs and integration servicesApplying API-first and event-driven integration patternsWorking across Cloud Integration (CPI), API Management, and Event MeshSupporting secure connectivity, message transformation, routing, monitoring, and error handlingContributing to integration standards, documentation, knowledge sharing, and capability upliftKey skills required:Strong experience with SAP BTP Integration SuiteExperience integrating SAP ECC6 and/or SAP S/4HANA with external systemsStrong knowledge of REST, SOAP, JSON, XML, middleware integration patternsExperience with secure integration design including OAuth, Mutual TLS, certificate-based authentication, and secure API exposureStrong technical design and problem-solving capabilityAbility to translate business requirements into scalable, secure integration solutionsDesirable:Experience in government, shared services, or highly regulated environmentsExposure to SAP IDoc, RFC, OData services, event-driven architectures, and integration governance frameworksThis is an exciting opportunity to join a significant transformation initiative supporting enterprise-scale digital services.If this sounds like you, or you know someone suitable, please get in touch directly.