Ivan Zivkovic

Experience

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  Telekom Srbija

  Mar 1999 - Nov 2006

  VPN Operation and maintenance engineer

  Involved in different projects including:- provisioning for Ericsson MVPN 2.2.2, VPN 2.1 and VPN 3.0;- migration for Ericsson VPN 2.1. to VPN 3.0- migration for Ericsson MVPN 2.2.2. to VPN 2.1- system architect for company web server, brand development, web site traffic growth

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  Evolution Online - EON

  Jun 2003 - May 2009

  Consultant and owner

  - Consultant in re-design of Ministry of Education web site & CMS system.- Project leader and developer of National telecommunication regulatory agency web site. This project includes database driven flash animation (XML and PHP).- Project leader and developer of Totalk.com website system. This system includes more than 300 web sites. It’s a turn key system business for VoIP technology. (Development team founded Evolution online – EON ltd.)

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  Ericsson

  Nov 2006 - Apr 2007

  Business model solution engineer for Ericsson VPN 3.0, INS 2.2, TSP 4.0 system provisioning. 5 weeks contract I was responsible for system OA&M and for knowledge transfer. Preparing documentation, and presentation for managers and engineers. It was 3 months contract.

  • VPN/IN provisioning engineer

    Mar 2007 - Apr 2007

  • TSP engineer

    Nov 2006 - Feb 2007
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  Telekom Srbija

  Apr 2007 - May 2008

  VPN Operation and maintenance engineer

  Responsible for:- Ericsson VPN 3.0, INS 2.2, TSP 4.0 system OA&M and system integration (IN, HLR, EMA, Billing, SMSC, MMSC, VAS, VMS)- BSCS billing system administration (Alpha cluster GS1280 & GS 80, Tru 64 OS, Oracle administration & HW maintenance)- Storage integration and system administration (Symmetrix, Clariion, Centera) - System administration (IMB Blade Center, FSC Primergy servers)- System architect and designer for web server (SuSE linux enterprise server, Apache, MySQL, PHP, CMS)Involved in different projects:- SAS Campaign Management system integration in MTS network.- Migration from BSCS to FORIS billing system (Creating business process model for VPN service).- 3G streaming promotional packages project. Solution developer for Ericsson Content Delivery System NIN provisioning of subscribers based on subscribed services.- Developer of VAS LDAP application for provisioning subscribers on VAS LDAP server (prepaid, postpaid and VPN subscribers) Show less

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  Ericsson Dominican Republic

  May 2008 - Oct 2008

  VPN Operation and maintenance engineer

  Responsible for:- Ericsson VPN 3.0, INS 2.2, TSP 4.0 system OA&M - Node management - DCM tool (SS7 configuration) - LDAP, MySQL, Tomcat - Subscriber provisioning procedures - Daily, weekly and monthly maintenance procedures - Knowledge transfer - SW Updates, system configuration and upgrades - CSR writing, problem analysis, emergency handling

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  Telekom Srbija

  Oct 2008 - Dec 2010

  Solution architect, developer

  Project manager for NSN eVoucher system:- Migration of 3rd party transaction centers (companies) to new NSN eVoucher system- Single point of contact throughout the project between external PM and internal teams from different departments- Leading a technical team of four. Responsible for writing T-SQL procedures, scripts and schedule DB jobs for specific requests- Monthly revenue for the NSN eVoucher system was about 10M EuroEnterprise software architect – provisioning system:- Developing postpaid and business subscriber provisioning solution using Oracle procedures and shell scripts. Subscribers are provisioned towards Ericsson HLR, IN/VPN service, NSN c@o prepaid service, VAS mPayment platform (customized LDAP node), SMSC and other network nodes.- The solution is used by customer care, sales, and technical departments.- More than 50.000 requests were sent using this solution in the first month of production.- Involved in the full software development life cycle from planning through implementation, testing and writing documentation to deployment and maintenance.Solution architect – 3G promotional streaming:- The solution was developed in coordination with 3rd party company and few internal departments (including marketing, customer care, sails and IT).- More than 10.000 postpaid and 200.000 prepaid subscribers used the 3G streaming package in the promotional period (two months)Responsible for:- Ericsson VPN 3.0, INS 2.2, TSP 4.0 system OA&M and system integration (IN, HLR, EMA, Billing, SMSC, MMSC, VAS, VMS)- NSN eVoucher system- BSCS billing system administration (Alpha cluster GS1280 & GS 80, Tru 64 OS, Oracle administration & HW maintenance)- Storage integration and system administration (Symmetrix, Clariion, Centera)- System administration (IBM Blade Center, FSC Primergy servers)- System architect and designer for the web server (SuSE Linux enterprise server, Apache, MySQL, PHP, CMS) Show less

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  Ericsson

  Jan 2011 - Dec 2012

  - Developing and debugging customized orchestrated provisioning solution (Subscriber View) in Ericsson MA SDK for Ericsson HSS, SLF, Service Enablement, and new multi-vendor network element business logic, network logic, and Java link. Deploying the locally and remotely developed solution- Developing XSLT for translation from SOAP request to MA CAI3G- Writing project documentation, solution description, user and administrative guide, and acceptance test cases scenarios- Writing transformation scripts for migration between LDAP structure to SQL relational database- Creating and executing acceptance test cases and functional test cases Show less

  • Solution integration, developer

    Apr 2012 - Dec 2012

  • Services professional, developer

    Jan 2011 - Mar 2012
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  Vip mobile d.o.o.

  Jul 2013 - Jan 2020

  - Technical support for the prepaid part of the digital transformation OneBSS project execution in 2017-2020 to transform and migrate all existing businesses and the legacy systems of the 4 TAG (Telekom Austria Group), mobile operators, in the Balkans region into Ericsson CBIO17 full-stack solution. That includes BSCS, CS (Charging System), TCRM (Telco CRM), EOC (Ericsson Order Care), and Hybris (SAP product).- The developer of the billing aggregator application. Developing the application using Python in the first agile team and introducing the agile methodology within the company.- Project management and leading to the most complex projects that affect the BSS & Digital Services Department- Permanent improvement and analytics of processes to ensure the highest efficiency of operation processes which leads to better resolution time for incidents. Proud to increase the resolved incidents within SLA from 80% to 98.5%. Show less - Led EAI team inside BSS & Digital Services Department, composed of BSS engineers and managing and coordinating their tasks and activities responsible for middleware- Participate in Change Advisory Board for changes over the BSS landscape and act as a Change Manager within the established process- Continuous communication with business stakeholders, vendors/integrators of respective systems regarding reported incidents, problems, and new functional requests – changes and configurations- Responsible for planning part of BSS Budget - operations and maintenance - covering the EAI environment. Achieved cutting down yearly OPEX on our team by 25% through consolidating vendors on two markets- Managed to create a functional multicultural team capable of overseeing the whole cluster Show less

  • Business System Support (BSS) Specialist - Prepaid team, BSS

    Apr 2017 - Jan 2020

  • Acting Team leader – EAI team, BSS

    Jun 2015 - Apr 2017

  • BSS Expert and Integration Engineer – EAI team, BSS

    Oct 2014 - Jun 2015

  • BSS Expert – Prepaid team, BSS

    Jul 2013 - Oct 2014
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  Virgin Mobile UAE

  Feb 2020 - Nov 2023

  Backend Application & Systems Manager

  - Led a team of 25 developers to deliver a CRM migration project with a restrained budget, ensuring a seamless transition and improved customer relationship management, cutting the operational cost by 20% and also removing unused licenses, leaving 10% of a budget to be used elsewhere- Oversaw the implementation of a ticketing system, enhancing operational efficiency and customer support, streamlining support and issue resolution processes which led to a 25% decreased time to resolve the cases.- Implemented the change of the activation flow in the customer and dealer applications which fixed the 50% of timeout errors during the activation- Integrated loyalty system with the CVM and Active Campaign for a real-time campaign program- Bridged the gap between IT team, product owners, and sales, facilitating effective communication and alignment- Recommended systems improvements to technical staff, prioritizing maximum ROI- Identified needed business improvements and determined appropriate systems required to implement solutions. Collaborated with internal departments to align marketing campaigns Show less

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  Etihad Credit Bureau

  Feb 2024 - now

  Associate Principal - Engagement

  Leading project of integrating with Al Ansari Exchange. Archives to deploy the project on time.