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Mert Arisli

@mertarisli

I keep business-critical SAP, retail, payment, and trading platforms reliable through production operations and technical delivery.

Turkey

Message

I've supported business-critical SAP and technical operations at A101, Destek Investment Securities, Verifone, and Ericsson. At A101, I helped operate SAP platforms for a nationwide retailer with 10,000+ stores and contributed to its SAP Quality Awards 2021 Grand Winner cloud transformation initiative.

I manage SAP S/4HANA, HANA, NetWeaver, ERP/R3, SQL Server, upgrades, transports, monitoring, incidents, and access controls. I also bring hands-on production support across trading applications, payment systems, POS environments, and enterprise integrations.

Experience

Work history, roles, and key accomplishments

Business Applications & Systems Manager

Destek Investment Securities

Nov 2025 - Aug 2026 (9 months)

Managed controlled upgrades, patch deployments, and compliance-driven changes for business-critical trading and core applications. Administered Microsoft SQL Server environments and provided L1/L2 production support for trading platforms.

Microsoft SQL Server Zabbix RBAC Maker Checker SMS OTP API Integration Incident Management Change Management Production Support

Senior SAP Basis / S/4HANA Administrator

A101 Yeni Mağazacılık A.Ş.

Nov 2019 - Jan 2025 (5 years 2 months)

Performed SAP Basis and technical operations for a nationwide retail organization with 10,000+ stores, supporting availability, performance, security, and continuity of business-critical enterprise platforms. Contributed to the SAP S/4HANA migration programme and cloud transformation initiative recognized as Grand Winner, SAP Quality Awards 2021.

SAP S 4HANA SAP Hana SAP NetWeaver SAP R 3 Microsoft SQL Server SAP Transportation Management SAP Upgrades Batch Processing Monitoring Incident Management SAP Security RBAC GDPR Cloud Transformation

Retail Systems & Payment Systems Administrator

A101 Yeni Mağazacılık A.Ş.

Feb 2019 - Nov 2019 (9 months)

Supported retail payment and store-system operations across the nationwide network, including POS, ECR, payment terminals, and multimedia CRM platforms. Coordinated banking relationships, vendor delivery, and third-party integrations supporting payment processing and store operations.

POS ECR Payment Terminals CRM UAT Vendor Management Third Party Integrations Production Support

IT Systems Engineer

Verifone EEMEA Region

Jan 2018 - Dec 2018 (11 months)

Supported POS, payment-infrastructure, and enterprise-system implementations for Verifone's Eastern Europe, Middle East, and Africa operations. Performed technical troubleshooting, system-integration support, performance analysis, and post-deployment operational support for payment environments.

POS Payment Infrastructure System Integration Troubleshooting Performance Analysis Vendor Management

IT Systems Consultant

Ericsson

Apr 2015 - Jan 2018 (2 years 9 months)

Delivered system-engineering, business-analysis, and implementation support for billing, charging, collection, and transaction-processing systems. Supported enterprise integration and operational delivery across telecommunications, banking, payments, and technology-sector engagements.

Billing Systems Charging Systems Collection Systems Transaction Processing Business Analysis Systems Engineering Integration Production Support