Aysun Kalemci

Information Security Team Leader | CISSP | ISO 27001 LA

Istanbul, Türkiye

About

Experience

  • Ziraat Teknoloji (Full-time · 7 yrs 7 mos)
    • Information Security Team Leader
      Sep 2025 - Present · 10 mos

    • Information Security Lead Expert
      Sep 2022 - Sep 2025 · 3 yrs 1 mo

    • Information Security Expert
      Dec 2018 - Sep 2022 · 3 yrs 10 mos

      • Implement Ziraat Finance Group (including 19 different countries) information security governance processes • Security audit of ZFG information systems • Security consultancy and architectural evaluation for projects. Leading the related committee • Develop information security strategy and roadmap • Follow developments for compliance with the legislation and regulation • Manage, attend internal and external ISO 27001 audit processes • Have an agile coach role in the integration of information security with agile processes • Risk assessments and risk management framework studies

  • Security Access Services Specialist at Turkcell
    Sep 2015 - Nov 2018 · 3 yrs 3 mos

    • Had an administrative role at Identity and access management tool, troubleshot issues and maintained operational activities • Security analysis of Data Masking Solution (DDM) on DB environments and maintained operational activities, solved performance and stability problems • Had an administrative role at role management tool RSA VIA • Had a facilitator role at building, improving and maintaining Security Operations Control Process with the coordination of security operational teams within Security Technology Group Process architecture

  • Information Security Specialist at Türkiye Finans Katılım Bankası
    Nov 2014 - Aug 2015 · 10 mos

    • Gained experience of log management with the integration of SIEM solution • Contributed to improvements of correlation rules by investigating the possible security scenarios • Had a role of Turkiye Finans Participation Bank CERT member • Managed DLP security solutions • Improved and implemented data protection policies • Risk assessment studies • Role of the development of Security Incident Management Process • Security Awareness Program studies • ISO 27001 compliance studies

  • Network Security Specialist at Turkcell
    Oct 2012 - Nov 2014 · 2 yrs 2 mos

    • Managing firewall, load balancer, DNS server systems. • Troubleshot of network access and configuration problems • Gained knowledge about infrastracture of Turkcell security network • Took part in the processes of projects, dmz, client segmentation projects, setting up new firewall devices

  • Trainee at Turk Telekom
    Aug 2010 - Sep 2010 · 2 mos