Fabien Busko

Freelance SAP Security & Authorizations Consultant with 8+ years of SAP-related experience, including 7+ years focused on SAP Security, Authorizations and Access Governance across SAP ECC, SAP S/4HANA, SAP S/4HANA Cloud, Fiori and access governance environments. Experienced in authorization audits, role model assessments, role remediation, SAP_ALL/SAP_NEW critical access cleanup, SAP GRC ARM workflows, SoD conflict review, Fiori access concepts, UAT, go-live readiness and client documentation. Operational consulting profile combining SAP authorization expertise, access governance, business-facing support and a complementary SAP Basis background supporting stronger understanding of transports, monitoring, system operations and technical security constraints.

Founder - LingvoSys SASU

(2026-01)

Independent structure created to support freelance consulting opportunities in IT consulting, SAP-related services, access governance, process optimization and multilingual professional communication. Available for freelance / contract assignments in SAP Security, SAP Authorizations, Access Governance, SAP GRC ARM support, role remediation, S/4HANA / Fiori access support, documentation, training, workshops and operational support.

SAP Security / Authorizations Consultant - Nagarro France - Entzheim, France

(2021-01 - 2025-12)

Delivered SAP Security, Authorizations and Access Governance activities for French and international industrial clients across SAP ECC, SAP S/4HANA, SAP S/4HANA Cloud, Fiori and GRC-like environments.

• Acted as SAP Authorizations referent for client requests, authorization incidents, audits, role model improvements, S/4HANA upgrades and access governance topics.
• Performed authorization audits, role model assessments and role remediation activities, including critical access review and SAP_ALL/SAP_NEW critical access cleanup on selected client environments.
• Supported SAP S/4HANA brownfield upgrade and migration contexts, including SU25-related authorization activities, post-migration role adjustments, go-live support and documentation.
• Advised clients on SAP ECC, SAP S/4HANA and SAP S/4HANA Cloud role concepts, including standard and custom Fiori catalogs, tiles, spaces, pages and business role alignment.
• Delivered training on SAP S/4HANA Cloud Public Edition role design principles in a greenfield implementation context migrating from a non-SAP ERP.
• Created, modified and optimized roles across SAP ECC, SAP S/4HANA and SAP S/4HANA Cloud environments.
• Resolved authorization incidents across DEV / QA / PROD systems, working with BPOs and developers across FI, CO, MM, SD, WM, EWM, QM and PP.
• Contributed to GRC-like access governance projects, including functional requirements, technical activation inputs, transport management, UAT organization and go-live preparation.
• Participated in client workshops and steering committees, producing technical recommendations, KPI-oriented reporting, documentation, procedures and user guides.
• Provided complementary SAP Basis operational support, including incident resolution, monitoring, transports, kernel updates, add-on installation, jobs, printing and procedure-based refresh activities.

SAP System Administrator - Access Management & Security - General Electric, Global Operations - Belfort, France

(2017-01 - 2021-12)

International finance shared service center covering 15+ GE entities, 15+ countries and approximately 300 users.

• Managed and improved SAP authorization processes across multiple ERP systems used by finance and accounting teams.
• Acted for 4 years as key user on SAP authorization and SAP GRC ARM-related topics in a strict finance environment.
• Managed access request workflows, role assignment and SAP GRC ARM-based provisioning activities.
• Handled SoD conflict reviews, high-risk access combinations, mitigation controller assignments and risk analysis checks.
• Used SUIM for user, role and transaction reviews in support of access governance and audit activities.
• Reduced average SAP access delivery time from approximately two weeks to half a day through SAP GRC ARM-based provisioning improvements, stakeholder coordination and workflow optimization.
• Strengthened security through SoD segregation and removal of high-risk access combinations.
• Supported AS-IS finance activity migrations during centralization initiatives, helping preserve operational continuity while adapting access processes, authorization workflows and related documentation.
• Contributed to workflow tool migration projects, including manual accounting posting workflows, light archiving topics and customer/vendor master data management activities.
• Created standard operating procedures, user guides and functional request forms to improve support efficiency and user autonomy.
• Covered authorization topics across FI, CO, MM, SD and Project Management.

IT Helpdesk Technician L1/L2 - French / Polish Support - ESDI - Belfort, France

(2014-01 - 2017-12)

• Resolved L1/L2 incidents within SLA deadlines for major retail groups.
• Supported SAP deployments, migration assistance and user adoption activities.
• Provided early SAP/BW end-user assistance for retail environments, including daily operational support for store users.
• Provided bilingual French / Polish support.
• Processed approximately 3,000 service requests with around 80% first-call resolution.

Bachelor's Degree - Language, Information & Communication Sciences, Multimedia Communication - University of Franche-Comte (2011-01 - 2012-12)

Bachelor of Commerce - Technical Sales Major - University Francois Rabelais (2008-01 - 2009-12)

ILSC - International Language School of Canada (2008-01 - 2008-12)

HND - Fluid Mechanics, Energy & Environmental Engineering, HVAC Systems - Lycee Louis Aragon (2005-01 - 2007-12)