Jozef Dérer

Jozef dérer

bookmark on deepenrich
Followers of Jozef Dérer285 followers
  • Timeline

  • About me

    Working hard, thinking smart, learning fast, leaving last, training long, getting strong,... bla bla bla, Project manager and TPM, these days. ("fire-man" too)

  • Education

    • Slovenská technická univerzita v bratislave

      1999 - 2005
      Master's degree informatics - telecommunications

      Telecommunications – networks and services, data and signaling protocols of telecommunication networks, transmission, telco exchanges/switches, LAN, WAN, PSTN, GSM, PDH, SDH, fiber optics, SS7, PABXDiploma thesis: Traffic routing in MPLS networks

  • Experience

    • Alatel-lucent

      Mar 2005 - Jun 2008
      Telecom engineer

      Pre-installation of equipments in back-office following by installation and implementation of products into customer network, troubleshooting and maintenance. Mainly focused on Alcatel VAS Products, SRP, SMSC and VMS. ( used technologies: OSP, OSP-ME, UNIX, SS7, IP)- Highly responsible for own part of projects, managing of main steps during installation and support for customer. Training for customers for new equipments.Installation and maintenance of VAS services for many telecommunication operators around the world (Cuba, Ireland, Vietnam, Algeria, Afganistan, Benin, Libya, Qatar,.. ) Show less

    • Orange slovensko, a.s.

      Jul 2008 - Aug 2022

      Managing several of the key technical projects related to mobile operator network, mainly focused on network infrastructure evolution and cyber security, like customer mobility, enhancement of services and customer experience, delivery of top new technologies. All in highly sensitive environment, with dramatic impact on core business and customer experience. Project with purely internal resources or also with external and international supplier's involvement. Implementation and compliance with network security standards as well as pushing for fast improvements of system hardening.Main accomplished project:* 5G network launch (5GSNA) - new network capabilities available for customers now* virtualization of packet core network function - in NFVI (IaaS) environment with successful run in production* VoWifi abroad in service* Certification Authority in service* DNS service enhancement* Different infrastructure elements replacement, upgrades a implementation, customer migrations with focus on security and limited outagePreviously in engineer role:Manage overall operations associated with engineering part of IP infrastructure related to EPC (Evolved Packet Core) service functionality and service cybersecurity with local and foreing partners. Play a key role in conducting all deployments configuration changes, security compliance of services, acceptance process as well as direct decommissioning of IP infrastructure created from different network elements, such as switches, core routers, firewalls, load-balancers, policy based routing devices, and monitoring. Draft and submit detailed final reports to higher management to display the assessment outcomes and advises that based on best practices for testing life cycle. Show less My day to day job responsibilities and duties are given below.Displayed exceptional expertise in management of new and ongoing technical projects of data centre LAN network infrastructure and cybersecurity hardening, while handling several activities, such as negotiating project plan, controlling human resources, project teams and budgetary aspects. Resolved conflicts, enhanced internal/external communication, and established supplier’s collaboration to improve efficiency and profitability of organisation. Played a vital role as technical project manager for all IP projects related to data center infrastructure, such as data center infrastructure deployment (L1 - L7), remote access migrations (1000+), IPsec migrations (150+), internal data center customer migrations (300+), and new IP network services integrations (ADC, FW, security gateway, VPNC, routers, and switches). Show less My day to day job responsibilities and duties are given below.Provided strategic support to engineering team in the process of securing, upgrading, developing and maintaining IP/MPLS core network, access network, and data center network. Rendered superior level of expertise in preparation of technical documentation for new services implementation into IP network and IP/MPLS core network. Implemented effective IT management strategies while working on Cisco equipment’s and technologies by using enterprise and service provider cisco products, juniper and F5. Some of my notable key achievements are given below:• Collaborated in the process of development and testing of new services in laboratory environment by using different testing equipment’s, such as traffic generators, analysers and network impairments emulator, Spirent, Anue, and Ixia products. Show less

      • Convergent NW control Senior Engineer / Technical Project Manager

        Sept 2015 - Aug 2022
      • Data Network Project Manager

        Sept 2012 - Aug 2015
      • Senior Data Network Engineer

        Jul 2008 - Jan 2013
    • Itacon s.r.o.

      Sept 2022 - now
      Project manager and chief information security officer

      Chief Information Security Officer for internal and external customers,IT consultant, Security auditor technical support,Project manager mainly for IT

  • Licenses & Certifications

    • Certified chief information security officer (cciso)

      Kompetenčné a certifikačné centrum kybernetickej bezpečnosti - kcckb
      Feb 2024
    • Prince2® 2017 foundation & practitioner certification

      Peoplecert
      Oct 2022
    • Itil foundation level

      Omnicom, s.r.o.
      Jan 2015
    • Cisco certified network associate routing and switching (ccna)

      Cisco
      Jan 2016