Sefa Ön

IT Services | Cloud Solutions | Network Technology Consultant

Istanbul, Istanbul, Türkiye

About

+ Sistem Yönetimi ve Sürekliliği + Network Yönetimi ve Sürekliliği + Sanallaştırma Projeleri ve Yönetimi + İş Geliştirme Süreçleri ve Desteği + Güvenlik Çöz. ücretli ve OpenSource kaynaklar + İhyiyaca yönelik, bütçe planına uygun çözüm üretimi + Aktif saha ve yurt dışı tecrübesi + Başarılı insan ilişkileri ve yöneticilik + Microsoft ailesi ve Linux Sistemler Uzmanlığı + VMware, Hyper-V ve Citrix Uzmanlığı + Network ve Güvenlik Yönetim Uzmanlığı + Bilgi Güvenliği çalışmaları (5651 yasa ile ilgili) + Kurumsal Anti-virüs, Anti-Spam çözüm üretimi + Microsoft Windows Server Ailesi (2000, 2003, 2008) + Linux Ailesi (Redhat, Debian, Ubuntu, CentOS vb.) + Mail Çözümleri (Exchange, Zimbra (Postfix), MDaemon) + Firewall Çözümleri (Checkpoint, Juniper, pfSense, Palo Alto, Fortinet, Cisco) + Sanallaştırma Çözümleri (VMware, Hyper-V, Citrix) + VPN Çözümleri Site-to-Site vb. + Kurumsal Anti-virüs ve Anti-spam Çözümleri (ESET, Trend Micro vb.) Uzmanlık Alanları:- - CCIE R&S - Virtualization (VMware, Hyper-V, vBlock) - System Administration (Linux, Windows) - Network and Security Administration (Firewall, IDS etc.) - Mail Solutions (Exchange, Zimbra, MDaemon) - Ability to present ideas in a customer-friendly language, - Highly self-motivated and directed, - Proven analytical and problem-solving abilities, - Strong customer service orientation, - Experience working in a team-oriented, collaborative environment. - Active field engineering and experience abroad - No military obligation.

Experience

  • Infrastructure Network & System Consultant at AstraZeneca
    Jun 2013 - Present · 13 yrs 1 mo

    Maintenance and corporate companies agree Systems, Projects, Network infrastructure and carry out activities in all areas related to IT, consulting and support . • Develop, implement and support cost effective technology solution • Project Management • Project & Maintenance Contract management • Define, Assess and Improve Project Management Process and Support system • Manage and execute new IT projects for future growth • Developing IT Tracking system to receive, prioritize, document and actively resolve enduser requests • Purchasing and configuring new equipment, setting up and administering all hosted service and resolving all end user issues • Negotiate and administer vendor and service agreements • Manage inventory including disposing/discharging/repairing equipment • Define, implement, improve to train staff on IT policies, procedures and best practices • Support current operation 7/24 hours • Network performance evaluation and optimization. • Troubleshooting and infrastructure management. • Responsible for 99.99% uptime for critical data network • Prepare technical specification for outsourcing project, give/take offer some tender process. • Use Symantec Netbackup Enterprise for backup solution • MPLS L3VPN and MPLS L2 VPN configuration and troubleshooting using Cisco platform • Prepare technical specification for outsourcing project, give/take offer some tender process.

  • IT-Administration at Mobiltel Iletisim Hizmetleri San. Tic. A.S
    Jan 2009 - Feb 2012 · 3 yrs 2 mos

    Computer Hardware, Windows 2003-2008 / 2008 R2 Server, Exchange 2007 / 2010 SQL 2000 / 2005 / 2008 R2 / ISA / TMG / PFsense Servers Repair-Installation-Configuration and Support, Windows XP / Windows 7 Installation-Support-Repair and Configuration, Helpdesk, Network Managing (Switch-Router Support-Installation)

  • IT Responsible at Willi Betz GmbH & Co. KG
    Jun 2006 - Mar 2009 · 2 yrs 10 mos

    Maintenance and corporate companies agree Systems, Projects, Network infrastructure and carry out activities in all areas related to IT, consulting and support