Mümtaz Sefa

Senior Network & Security Engineer | CCNP Security | NSE7

Istanbul, Türkiye

About

With 6 years of experience in network and security engineering, I specialize in the setup, management, and optimization of security infrastructures. Currently, I work as a Senior Network Security Engineer at Ziraat Teknoloji, where I play an active role in planning and executing the deployment of new products or architectural changes within the Ziraat Katılım Bankası infrastructure. In addition to managing routine operations, I focus on problem identification and resolution, and I collaborate with the manufacturer’s TAC engineers when necessary to ensure issues are resolved. Previously, I worked on Destel Bilişim Çözümleri’s Istanbul Airport project, managing and maintaining critical security products such as firewalls, IPS, DDoS, and packet brokers. I also gained leadership and technical expertise in various roles at Barikat Siber Güvenlik. My technical expertise includes network security, cybersecurity solutions, and problem-solving. With a commitment to continuous learning, I strive to provide innovative and high-performance solutions in security infrastructures.

Experience

  • Senior Network Security Engineer at Ziraat Teknoloji A.Ş.
    May 2024 - Present · 2 yrs 2 mos

    Since May 2024, I have been working as a Senior Network Security Engineer at Ziraat Teknoloji. My primary responsibilities included planning and executing the deployment of new products or architectural changes within the infrastructure of Ziraat Katılım Bank. In addition to this role, I manage routine operations, identify and resolve problems, and collaborate with TAC Engineers when necessary to ensure issues are resolved.

  • Barikat Siber Güvenlik (Istanbul, Türkiye)
    • Security Technologies Team Leader
      Feb 2024 - Apr 2024 · 3 mos

    • Security Technologies Specialist
      Jul 2022 - Feb 2024 · 1 yr 8 mos

      Installation, management and configuration updates of located physical network security products on client location or remotely. I provide supporting to our customer's issue related to checkpoint NGFW,Radware defensepro. If it requiers opening the case to vendor. I open case and manage and follow case updates.

  • Network Security Engineer via Destel at iGA Istanbul Airport
    Oct 2018 - Jul 2022 · 3 yrs 10 mos

    Between 2018 and 2022, I worked as a network and security engineer on Destel Bilişim Çözümleri’s Istanbul Airport project, contributing to the setup and deployment of the security infrastructure. I played a key role in managing and maintaining products such as firewalls, IPS, DDoS, and packet brokers.

  • Intern at Türk Telekom
    Jul 2017 - Aug 2017 · 2 mos

    Interned as responsible of maintenance, infrastructure for MPLS circuits that run on service provider.