Senior Business Systems Engineer

International Airport of Heraklion, Crete S.A. is currently looking for a:

Senior Business Systems Engineer

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