Ahmet Okumuş

Cyber Security & Information Security Architect | Bank Setup & Security Ops | PCI DSS/CP/PIN | ISO 27001

Istanbul, Türkiye

About

I started my career in IT Security and have since expanded through my valuable consulting experience, highly motivated technical integrations, projects, transformation programs, technical and executive leadership, and strategic decision-making skills. These skills enable me to identify and implement evolving business needs. I have successfully led the implementation of IT infrastructure for a variety of financial organizations, including banks, fintech companies, electronic payment providers and e-commerce companies. I have proven expertise in building and leading high performing teams, driving successful integrations and ensuring operational excellence. I also follow industry best practices and proactively propose solutions for continuous improvement of the security infrastructure. My main characteristics in the field of management are: - Strong supplier management, - Team building, training and management, - Creating new business ideas, - Coaching and mentoring, - Career planning, - Digital transformation areas and creating new opportunities, - Budget CAPEX, OPEX management, - Strategic planning and decision making, - Risk management. Technical management areas; - Management of Information Security & Cyber Security tools: "SIEM, SOAR, Firewall, IPS, WAF, SSL&IPSEC VPN, EDR/EPP, AV, MAIL-GW, Proxy, DLP, PAM, DAM, DNS FW, DDOS, Sandbox etc.. " - Risk and quality management support processes, - Business continuity activities, design, formulating and implementing business continuity and disaster recovery plans, - Topology design and implementation of Multi-DC redundancy, - Network and security architecture design, - Microservice security, - Vulnerability scans and Source Code analysis, - Creating POC environments, - Preparation of RFI/RFP documentation, - Project management. #cyber security #information security #PCI DSS/CP/PIN #KVKK #ISO27001

Experience

  • Senior Information Security Architect at BKM Bankalararası Kart Merkezi (Interbank Card Center of Türkiye)
    Aug 2025 - Present · 11 mos

  • Cyber Security Manager at Bileşim Finansal Teknolojiler ve Ödeme Sistemleri
    Jul 2023 - Jul 2025 · 2 yrs 1 mo

  • Network & Security Unit Manager at PayCore
    Apr 2022 - Jul 2023 · 1 yr 4 mos

  • Senior Network & Security Engineer at sahibinden.com
    Nov 2021 - Apr 2022 · 6 mos

  • Senior Network & Security Specialist at Paycore
    Jun 2019 - Nov 2021 · 2 yrs 6 mos

    "MasterCard PTS Turkey" has been merged with "PayCore" and MasterCard transferred the ownership of the company to PayCore. So I still work in the same company with similar responsibilities.