Senior Business Systems Engineer (based in Crete)

International Airport of Heraklion, Crete S.A. is currently looking for a: Senior Business Systems Engineer (based in Crete) Responsibilities • Support Microsoft 365, Entra ID, Intune, Windows 365 and related services within the team service boundary • Work with identity lifecycle, enterprise applications, service principals, MFA, Conditional Access and device-management dependencies • Use PowerShell, APIs, Git and modern engineering practices to automate repeatable administration and improve service reliability • Diagnose Windows Server, Active Directory, DNS, virtualization, storage, Azure, database, backup and certificate dependencies where they underpin an owned Business System • Lead technical investigations for escalated incidents, participate in RCA and maintain clear evidence, workarounds and recovery actions • Provide L2 support for enterprise and departmental Business Systems and retain technical ownership through incident resolution • Troubleshoot application, identity, integration, data-access and service-dependency issues end-to-end before escalation • Support HDS / ITSM, EMS / Enterprise Management, SAP / ERP technical dependencies, Power Platform, Power BI / Fabric and other assigned business applications • Participate in FAT/SAT/UAT, supplier handover, go-live, hypercare and transition to BAU Requirements • Bachelor's degree in Computer Science, Information Technology, Information Systems, ICT / Systems Engineering or a related technical field; a relevant Master's degree is an asset • Relevant Microsoft 365, Azure, Entra, IT service management or comparable enterprise-technology certifications are highly desirable • Minimum 5 years of hands-on experience in complex ICT environments with enterprise applications, Microsoft cloud services, identity, automation or production support; senior ownership, mentoring or supplier coordination is an advantage • Working knowledge of Azure, Windows and identity fundamentals, with PowerShell or comparable scripting / automation capability • Excellent command of English, both written and verbal Competencies • Strong team orientation, ownership mindset, communication and problem-solving skills • Structured incident diagnosis, problem solving and clear technical communication • Ability to coordinate effectively with users, ICT peers and external suppliers