Minimum 5 years of experience in system architecture or integration roles, Strong knowledge of SAP S/4HANA and relevant SAP modules supporting eCommerce, Hands-on experience with API-based integration (REST/SOAP, integration patterns) using Mulesoft or similar platforms, Proven ability to create enterprise-level solution designs, Experience in transformation/migration projects, Excellent communication skills and ability to explain technical concepts to non-technical stakeholders, Residing in Poland required, Exposure to BI systems and data integration processes, Knowledge of cloud integration architecture (Azure, AWS, GCP), Relevant certifications (e.g., SAP, Mulesoft)