Sefa Yildiz Email & Phone Number

Istanbul, Turkey

Istanbul, Turkey

Service Administrator of Mobile Payment, PayCell, Dealer Sales services

Istanbul, Turkey

* End to end Siebel Campaign & CRM Management and Datawarehouse ongoing operations with administration of Oracle siebel,Informatica, OBIEE,DAC, SMSGW and related 3rd party components.* End to end Operation of Vodafone Campaign Management Communication Channels like SMS, E-mail, IVR, Promotion, etc and owner of the operations.* Legacy FTP applications.* Unix script development* Responsibe for ETL development* Managing and Maintenance of Middleware Layer products such as… Show more * End to end Siebel Campaign & CRM Management and Datawarehouse ongoing operations with administration of Oracle siebel,Informatica, OBIEE,DAC, SMSGW and related 3rd party components.* End to end Operation of Vodafone Campaign Management Communication Channels like SMS, E-mail, IVR, Promotion, etc and owner of the operations.* Legacy FTP applications.* Unix script development* Responsibe for ETL development* Managing and Maintenance of Middleware Layer products such as TIBCO,OSM and Weblogic.* Responsible for following KPI (metrics) engegaed with business to make sure achieved and also KPI’s regular reporting.* Responsibe for Project Implementation, integration to other systems. * Responsible for 7/24 service availability, management, configuration, performance-tuning and utilization of applications.• Service owner of the current and historical applications. * Siebel CRM * Siebel Campaign Management * Tibco, OSM * Oracle BI * Chordiant Decision Management (RealTime Decisioning) application. Inbound/Outbound agents are using this tool in order to sell product/option,package, etc to susbcribers. * ICCB - Vodafone Legacy CRM * SMS Gateway * Mobile Number Portability-Electronic Document Management System (EMC Documentum & EMC Captiva), * Revenue Office (Usage Assurance, Platform Integrity, Prepaid Balance Validation, Topup End To End), * Easy Payment System (KOS), * Online Payment System (Billing Payment and Provisioning System), * Askonline (Web self-service, Knowledge management Tool) * Callidus (Compansation Management) application. Calculating bonus for shops regarding to the subscriber activation, sold products, invocice payments, etc. Show less

Voice Over IP Technical and Design Support (08.2009 -)Nortel's Adaptive Application Engine (A2E) platform seamlessly integrates voice with video, collaboration and presence services to deliver SIP-based multimedia communications services. It also acts as an Application Server in Nortel's 3GPP IP Multimedia Subsystem (IMS) solution.I am responsible for technical and design supporting of our VOIP Product to the customers all over the world live sites and maintaining services such as… Show more Voice Over IP Technical and Design Support (08.2009 -)Nortel's Adaptive Application Engine (A2E) platform seamlessly integrates voice with video, collaboration and presence services to deliver SIP-based multimedia communications services. It also acts as an Application Server in Nortel's 3GPP IP Multimedia Subsystem (IMS) solution.I am responsible for technical and design supporting of our VOIP Product to the customers all over the world live sites and maintaining services such as WEB applications or SIP signaling based functions. I have gained TCP/IP, SIP, and 3GPP telecom protocol, Object Oriented programming (Java), Network knowledge and experience. I have also gained extensive experience in Sip signaling and investigating system logs for debugging. I am fixing software the bugs and problems reported from customer sitesI am providing 24x7 customer emergency support of their live sites by the pager responsibility on rotation basis.I am planning cooperating maintenance and upgrading of our products and the components and solving expected or unexpected problems. Show less

Supporting of the availability ,stability and durability of the environment tools used in R&D; Analyzing technical problems reported by our customers, hardware and software maintenance issues, which include problem identification, escalation, and resolution implementation and follow up; Provide customer support 24x7 by taking the pager responsibility on rotation basis.Planning and cooperating maintenance and upgrading of the Software Development Environment.Writing Perl and… Show more Supporting of the availability ,stability and durability of the environment tools used in R&D; Analyzing technical problems reported by our customers, hardware and software maintenance issues, which include problem identification, escalation, and resolution implementation and follow up; Provide customer support 24x7 by taking the pager responsibility on rotation basis.Planning and cooperating maintenance and upgrading of the Software Development Environment.Writing Perl and shell scripts for solving the problems on support tools and increasing of the environment tools which also provides cost and time reduction.Developed tools which all Global Nortel Employers are using. Show less

Ketchikan, Usa

- Included to Work & Travel Project.

Electrical - Electronic Engineering

Education record