Seyhan Tekelioğlu
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Seyhan Tekelioğlu Email & Phone Number

Principal Data Security Consultant at KoçSistem
Location: Istanbul, Istanbul, Turkey 8 work roles 3 schools
1 work email found @kocsistem.com.tr LinkedIn matched
✓ Verified Jun 2026 4 data sources Profile completeness 100%

Contact Signals · 1 work email

Work email s****@kocsistem.com.tr
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Current company
Role
Principal Data Security Consultant
Location
Istanbul, Istanbul, Turkey
Company size

Who is Seyhan Tekelioğlu? Overview

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Quick answer

Seyhan Tekelioğlu is listed as Principal Data Security Consultant at KoçSistem, a company with 1500 employees, based in Istanbul, Istanbul, Turkey. AeroLeads shows a work email signal at kocsistem.com.tr and a matched LinkedIn profile for Seyhan Tekelioğlu.

Seyhan Tekelioğlu previously worked as Senior IT Security SME at Koçsistem and Expert Oracle Database Administrator at Ergo Türkiye. Seyhan Tekelioğlu holds Computer Engineering from Ahmet Yesevi University.

Company email context

Email format at KoçSistem

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*@kocsistem.com.tr
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Profile bio

About Seyhan Tekelioğlu

With over 25 years of experience, including 11 years as an Oracle Application DBA and Core DBA in both development and production environments, I am continuing my professional journey by focusing on database and data security as my new career goal. My expertise with 6 years of IBM Guardium has deepened my understanding of securing sensitive information and managing database activities with a focus on compliance and risk management. Additionally, I have strong skills in 4 years of Forcepoint DLP, web and email security , enabling me to design and implement data loss prevention strategies to safeguard critical business data.I also bring comprehensive experience in the complete life cycle of client-server environments and database applications, utilizing a variety of development tools and programming languages. My thorough understanding of security, backup procedures, and data integrity ensures that databases are robustly protected from both internal and external threats.Furthermore, I possess hands-on expertise with 2 years of Proofpoint, specifically in security awareness training and phishing protection solutions, which allows me to strengthen organizational resilience against phishing attacks and enhance employee awareness of cyber risks.

Listed skills include Oracle E Business Suite, Oracle Applications, Vmware, Solaris, and 23 others.

Current workplace

Seyhan Tekelioğlu's current company

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KoçSistem
Koçsistem
Principal Data Security Consultant
turkey
Employees
1500
AeroLeads page
8 roles · 27 years

Seyhan Tekelioğlu work experience

A career timeline built from the work history available for this profile.

Senior It Security Sme

Current

Istanbul, Turkey

  • As a new career goal, I have combined my database experience with data security. I provide IBM Guardium product installation, implementation and management, data security consultancy to companies, data masking and data.
  • IBM Guardium installation, implementation and management.
  • Forcepoint DLP, Email & Web security management.
  • Proofpoint Phising simulations and awareness trainings
  • Data security consultancy.
  • Data masking and data encryption solutions.
Apr 2019 - Present

Expert Oracle Database Administrator

Istanbul, Turkey

  • I’m managing Oracle, Sybase and Ms SQL database management. I am responsible for establishment communication with Koç Sistem who providing infrastructural support to the company and managing processes. I controlling.
  • Managing Oracle 12c, 11g databases.
  • Managing Sybase, Ms SQL databases.
  • Deployment of PL / SQL package and SQL scripts in the production environment to production, test and development environments.
  • Providing communication between Koç System and Ergo and enforcing operations when necessary.
  • Tracking Oracle Data Integrator ETL operations, making PL / SQL code changes.
Aug 2017 - Apr 2019

Senior Oracle Database Administrator

Istanbul, Turkey

  • I joined Vodafone for a fixed term contract via Runitas as a senior Oracle DBA. I also worked with the database development team to improve database performance. During this timeframe I took several important actions.
  • Upgrading production, dev. and test environments from 9i and 10G to 11G and 12C version. Some of them include RAC and Data Guard.
  • Partition table definitions and partitioning management in critical production systems.
  • Backing up Terabyte sized production databases to the archive database and validating them.
  • Preparing RMAN scripts and integrating them into databases and validation of backups.
  • Accepting support requests from development and functional teams.
Nov 2016 - Mar 2017

Senior Oracle Apps Dba

Istanbul, Turkey

  • I led the team which was responsible for managing the JCI’s financial databases in Europe and the Oracle 11i, 11.0.3 E-Business Suite applications that have branches in Europe and US. I have been involved in many.
  • Oracle E-Business Suite 11i and 11.0.8 cloning, administration, installation and user support.
  • Planning Oracle 8i, 9i, 10G and 11G database backups, creation of RMAN backup scripts.
  • Preparation and planning for SOX compliancy and attending SOX audits personally.
  • Participated in the periodical Disaster Recovery tests of the company and provide the necessary coordination throughout the organization to perform the necessary work for the database and application systems to pass.
  • Database administration of all third-party applications which are utilizing Oracle DBMS.
Jun 2010 - Jul 2016

Oracle Dba & System Administrator

Aktek
  • I also worked on system administration as well as database administration. My responsibilities covered installing databases and applications on the VMware ESX server, installing RAC and Data Guard, planning and.
  • Oracle E-Business Suite 11i and 11.0.8 cloning, administration, installation and user support.
  • Managing Oracle 8i, 9i, 10G and 11G database backups, creation of RMAN backup scripts.
  • Oracle RAC and Data Guard installations and testing.
  • Installation and management of databases and applications on VMware ESX server.
  • Database administration of all third-party applications which are utilizing Oracle DBMS.
Mar 2007 - Jun 2010

System Administrator

Armada Bilgisayar
  • I managed the systems in Armada Computer's main office in Istanbul. I was responsible for controlling and managing all the devices in the system room as well as SAP support, MS SQL server administration and domain.
  • Backup of SAP R / 3 systems, management of servers.
  • File server backup and control backup results.
  • Manage and maintain Cisco Routers, 3Com & Cajun Switches, Watchguard & Juniper Netscreen Firewall.
  • Manage and maintain IIS web server.
  • Monitoring of all network traffic and making interventions when necessary.
2005 - 2007 ~2 yrs

System Administrator

Escort Computer
  • I gave user support as well as the task of managing the server systems and network in the head office of Escort Computer. I also have some system improvement projects that are deemed necessary.
  • Manage of whole domain.
  • Manage and maintain Email servers.
  • Manage and maintain local and WAN network.
  • Manage and maintain antivirus software.
  • Giving user support.
2004 - 2005 ~1 yr

System Administrator

Vestelnet
  • Vestelnet was a company serving as an internet service provider. I work here both in system administration and network traffic control. I advised some outsourced clients about system / network setup.
  • Monitoring and reporting of external network of VestelNet with MRTG.
  • Manage of head office system room.
  • Manage and maintain antivirus software.
  • Giving user support.
  • Implementation of network solutions suitable for outsourced customer’s offices.
1999 - 2002 ~3 yrs
Team & coworkers

Colleagues at KoçSistem

Other employees you can reach at kocsistem.com.tr. View company contacts for 1500 employees →

3 education records

Seyhan Tekelioğlu education

Computer Engineering

Ahmet Yesevi University

Master'S Degree, Cyber Security

Ahmet Yesevi University
FAQ

Frequently asked questions about Seyhan Tekelioğlu

Quick answers generated from the profile data available on this page.

What company does Seyhan Tekelioğlu work for?

Seyhan Tekelioğlu works for KoçSistem.

What is Seyhan Tekelioğlu's role at KoçSistem?

Seyhan Tekelioğlu is listed as Principal Data Security Consultant at KoçSistem.

What is Seyhan Tekelioğlu's email address?

AeroLeads has found 1 work email signal at @kocsistem.com.tr for Seyhan Tekelioğlu at KoçSistem.

Where is Seyhan Tekelioğlu based?

Seyhan Tekelioğlu is based in Istanbul, Istanbul, Turkey while working with KoçSistem.

What companies has Seyhan Tekelioğlu worked for?

Seyhan Tekelioğlu has worked for Koçsistem, Ergo Türkiye, Vodafone, Johnson Controls, and Aktek.

Who are Seyhan Tekelioğlu's colleagues at KoçSistem?

Seyhan Tekelioğlu's colleagues at KoçSistem include Eren Ökmen, Kasım Deniz, Bülent Yaşar Okyay, Murat Serdar Apohan, and Berke Aysel.

How can I contact Seyhan Tekelioğlu?

You can use AeroLeads to view verified contact signals for Seyhan Tekelioğlu at KoçSistem, including work email, phone, and LinkedIn data when available.

What schools did Seyhan Tekelioğlu attend?

Seyhan Tekelioğlu holds Computer Engineering from Ahmet Yesevi University.

What skills is Seyhan Tekelioğlu known for?

Seyhan Tekelioğlu is listed with skills including Oracle E Business Suite, Oracle Applications, Vmware, Solaris, Disaster Recovery, System Administration, Windows Server, and Linux.

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