Bogdan-Ioan Crișan

• Executed system and security patching across servers, OS, databases, and SAP applications, managing and monitoring a landscape of more than 70 systems.
• Managed user and authorization administration (roles, profiles, access control, audit compliance).
• Performed incident detection, troubleshooting, and resolution within SLA targets.
• Monitored and optimized SAP system performance, availability, and stability across critical landscapes.
• Ensured compliance with internal security standards and external audit requirements.
• Administered HANA, Oracle, MaxDB environments, including upgrades, kernel patches, and DB tuning.
• Performed system copies, refreshes, migration activities, and environment preparation for cutovers.
• Provided on-call support and led weekend deployment and cutover operations.
• Managed OS administration (Linux, Windows) supporting SAP application and DB tiers.
• Collaborated with global teams (German/English) to maintain operational excellence and implement Basis improvements.

• Completed SAP Academy program and delivered structured knowledge transfer to technical teams.
• Managed user and authorization administration, identity management, and access control across SAP environments.
• Performed system administration and monitoring for both ABAP and JAVA stacks, ensuring stability and performance.
• Supported SAP Cloud (RISE, BTP) operations, integrations, and connectivity via Cloud Connector.
• Executed SAP system installations and upgrades (S/4HANA, ASE, Solution Manager), including kernel patches and landscape updates. Installed more than 3 SAP System Landscapes.
• Managed transport routes, CTS configuration, and change migration across multi-tier landscapes.
• Planned and executed backup, restore, and disaster recovery procedures; improved performance through proactive system tuning.
• Administered HANA, Oracle, Sybase, and MaxDB databases, including maintenance, troubleshooting, and optimization.
• Ensured security compliance through patching, monitoring, audit preparation, and adherence to SAP security standards.
• Applied OS administration skills (Linux/Windows) to support SAP application and database layers.
• Reduced downtime by managing upgrades, patches, and system improvements with minimal business disruption.
• Ensured high availability and optimal performance for SAP environments through continuous monitoring and tuning.

• Performed system upgrade checks, system copies, and landscape preparation for S/4HANA and ECC environments.
• Managed authorization concepts and led user/role migration from ECC to S/4HANA, including transaction alignment for banking sector clients. Oversaw more than 1,000 custom roles, objects, and transactions throughout the migration.
• Administered and monitored SAP S/4HANA and ECC systems, ensuring high availability, performance, and security compliance.
• Handled incident management, root-cause analysis, and troubleshooting for business-critical SAP environments.
• Integrated and configured SAF-T and eFactura solutions via SAP Cloud Connector, ensuring full regulatory compliance. Managed implementations across more than 12 companies, applying customized solutions and executing over 1,000 SAP Notes to support seamless integration and compliance.
• Delivered knowledge transfer to administration teams and customers on SAP Basis and security operations.
• Optimized SAP system configuration and performance through proactive tuning and maintenance.
• Performed database administration tasks across HANA and legacy DB platforms, ensuring system stability and data integrity.

• Performed SAP Basis administration, including system maintenance, patching, performance tuning, and landscape optimization.
• Supported KYC and banking compliance initiatives and security requirements.
• Collaborated with business consultants and IT analysts to align SAP technical configurations with financial compliance processes.
• Ensured secure system configuration and user access management in accordance with financial industry standards.
• Delivered knowledge transfer and technical guidance to international teams across multiple regions.
• Managed SAP system configurations, enhancements, and performance improvements to ensure reliability and stability.

• Provided SAP Basis administration and AMS support across global SAP landscapes, ensuring stability and system availability. Supported more than 80 customers, each with multiple system landscapes.
• Delivered maintenance, patching, kernel updates, and upgrade activities across ABAP and Java systems.
• Utilized SAP Solution Manager and SAP AO for system monitoring, change management, and incident resolution.
• Collaborated with international teams and clients (DE, IT, IN, JP, RO) to resolve incidents, problems, and performance issues.
• Managed user access, security configurations, and compliance controls to protect sensitive business data.
• Led SAP system installations and upgrade cycles, improving performance, reliability, and operational continuity.
• Provided knowledge transfer and technical guidance to international support teams.