Ergun Ozsullu

Experience

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  CP Group

  Jul 2005 - Aug 2006

  Network and System Engineer

  • Set up and maintained Cisco WAN routers for 5 factories and 12 small units, enabling seamlesscommunication via leased lines.• Implemented secure site to site VPN connections for 60 stores, resulting in improved online stockcontrol and reporting.• Analyzed 300+ end users' IT requests and provided comprehensive support, maintaining strongrelationships with third-party vendors to fulfill requests and address technical issues.

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  ABH

  Aug 2006 - May 2008

  Network Security Specialist

  • Managed successful Data Center Relocation project, moving and restarting 200+ servers, storage,and backup equipment in 48 hrs, minimizing downtime and ensuring 5000+ users could work withoutany issues.• Managed the successful implementation of the Efes Pilsen Warehouse Logistics AutomationInfrastructure Project, overseeing the installation of outdoor wireless access points in all five factorywarehouses, integrating rugged tablets for forklift operations and hand held terminals for supervisors.This initiative resulted in the efficient loading of over 400 trucks, emphasizing a systematic "First In,First Out" (FIFO) approach for product loading. The project significantly enhanced warehouse logistics,ensuring timely and accurate deliveries while optimizing inventory management for improved supplychain efficiency.• Contributed to the implementation and management of LAN/WAN technologies, disaster recoverysystems, and firewalls, overseeing a diverse set of network devices. Successfully deployed keytechnologies, including Cisco Catalyst 6500 Series switches, Cisco Firewall Services Module (FWSM),various Cisco Switches (29xx, 3560, 3750, and 4500 series), Symantec Firewalls, Juniper Secure Access(SA) SSL VPN appliances, and Bluecoat PacketShaper. These initiatives played a pivotal role inensuring the seamless operations of group companies across Manufacturing, Retail, Automotive, andHealthcare, impacting a workforce exceeding 50,000 employees.• Enhanced IT infrastructure security by analyzing needs, managing purchases, and negotiating withvendors to form strategic partnerships. Show less

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  IBM Global Services

  May 2008 - Feb 2011

  IT Security Expert

  • Played a pivotal role in IT Strategic Outsourcing contracts, delivering tailored network andcybersecurity services to key clients in the Finance, Manufacturing, and Retail sectors—leaders in theirrespective fields across Turkey.• Provided Level 3 (L3) support for different network and security systems involving brands like Cisco,Juniper, Checkpoint, ISS Proventia Firewalls, and Blue Coat.• Successfully led the carve-out of AvivaSa Private Pension Company and Aksigorta InsuranceCompany from Akbank, one of Turkey's biggest banks. Systematically migrated all IT systems fromAkbank's data center to IBM's data center, carefully establishing distinct network and securityinfrastructures for each entity. Thoughtfully analyzed and configured only relevant firewall rules in thenew Checkpoint firewalls, ensuring a seamless transition. Implemented a robust DMZ structure andsmoothly migrated SSL VPN and site-to-site VPN connections with branch offices to the new firewallenvironment. As the project lead, I efficiently managed the network and security operationsthroughout the carve-out, ensuring a secure and optimized IT environment for both AvivaSa andAksigorta.• Managed Tüvtürks' expansive network and security infrastructure, overseeing a nationwide servicenetwork with 4500 employees across 210 test stations, 5 motorcycle, and 75 mobile stations, alongwith 18 mobile tractor stations. Successfully facilitated approximately 9 million periodical andRoadworthiness Inspections annually. Implemented primary MPLS lines and ADSL or GSM backupconnections for most stations, ensuring reliable connectivity to the headquarters. Administeredsecurity and network equipment, including Juniper and Cisco firewalls, wireless access points, Blue Coat SG for web filtering, and Authentication and AccessControl for wireless users. Led a team supporting the test stations and developed standardconfigurations for the installed network and security equipment. Show less

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  Alcatel-Lucent

  Feb 2011 - May 2012

  Project Manager

  • Directed technical projects as a Technical Project Manager for two prominent Telco operators inTurkey. Headed technical teams for both installation and maintenance projects.• Managed Turkcell's 3G IP - MPLS Network Upgrade and maintenance project, the largest GSM operatorin Turkey with over 35 million subscribers. Led a team of 8 individuals responsible for software andequipment upgrades. Successfully developed procedures and guided team members through theMPLS network upgrade. Show less

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  Atos

  May 2012 - Jan 2020

  Senior Project Manager & Service Delivery Manager

  • Administered IT contracts for Siemens, Siemens Financial Services, British American Tobacco (BAT),Ipragaz (subsidiary of SHV Energy), and Coca Cola Icecek as a Service Delivery Manager. Managedcontracts with values ranging from 1 to 20 million euros.• Acted as the single point of contact for the mentioned contracts. Directed all contractual obligations,managed both customer satisfaction and contract margin targets without any failures. Utilizeddiverse expertise teams, including Windows, web application, Linux, network, security, and databaseadministrators, along with shared company resources such as legal and procurement. Translatedcustomer demands, ensuring compliance with contracts for these teams. Held P&L responsibility,overseeing total yearly invoices exceeding 20 million euros.• Managed strategic deals as a bid manager. Led both technical and non-technical teams duringbidding and contract negotiations. Leveraged my technical background to influence customertechnical requirements, finding optimal solutions for both my company and potential clients.Moderated contract negotiations to establish fair agreements for both parties.• Executed Siemens Server refreshment project. Transferred over 100 physical servers, including SAP,Database, and web application servers, from the Turkey data center to the Vienna data centerthrough virtualization. Show less

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  AmzCozumleri

  Apr 2018 - now

  Co-Founder
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  HAVELSAN

  Jan 2020 - Oct 2020

  Business Development Manager

  • Crafted and implemented a detailed long-term product strategy and roadmap for the cybersecurityand homeland security product portfolio (Data Leakage Prevention DLP, Load Balancing/ WebApplication Firewall, Data Diode) within public accounts.• Generated 40% increase in sales by conducting proof of concept for new products & gatheringcustomer feedback in 1 year.

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  InfoDif

  Oct 2020 - Dec 2021

  Head of Project Management

  • Led a team of 15 people comprising pre-sales, project managers, and contract managers. Oversawthe pre-sales process, including bidding and contract negotiations, leading to successful projectacquisitions and increased business opportunities.• Boosted revenue by 10% in the first year through consultative sales approach, securing 3 new logos &5 contracts, expanding customer base & enhancing profitability in the first year.

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  Renekton Bilişim ve Danışmanlık A.Ş.

  Dec 2021 - now

  Consultant / Co-Founder
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  Offensive Security Manager

  Jan 2024 - now

  Global Business Development Manager
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  NSPECT.IO

  Jan 2024 - now

  Security Consultant