michal witek

vas technical support engineer

About

Senior IT Specialist w T-Mobile Polska (Deutsche Telekom)

Country

poland

City

poland

Industry

telecommunications

Skill

gsm, umts, linux, databases, data analysis, microsoft office, operating systems, telecommunication services, vas, core network, network administration, system administration

Experience

vas technical support engineer

nation-wide oversight of mobile network senior specialist nss section

orange polska

2010-11 - 2012-6 · 1 yr 8 mos

nation-wide oversight of mobile network specialist nss section

orange polska

2009-6 - 2010-11 · 1 yr 6 mos

nation-wide oversight of mobile network specialist bss section

orange polska

2009-1 - 2009-8 · 8 mos

chief ict specialist

orange polska

2012-12 - 2014-3 · 1 yr 4 mos

* Responsibilities: * maintenance and administration of OSS systems * NetAct, M2000, Advantage Commander, * maintenance vmware vsphere virtualization platform * maintenance and administration monitoring systems IBM (SLM, Netcool/Omnibus) * maintenance and administration BMC product families (BMC Patrol, BMC Impact Portal, BMC Reporting) * network devices monitoring based on open-source solutions (SNMP, RRDTool, Cacti) * Unix based systems administration (Solaris, RedHat and other Linux distros)

nation-wide oversight of mobile network expert specialist nss section â telekomunikacja polska s.a

orange polska

2012-6 - 2012-12 · 7 mos

* Responsibilities: * monitoring core mobile network elements such as SGSN, GGSN, MSS, MGW,HLR * monitoring service platforms in mobile network VAS (IN network, MMSC, SMSC, ISEP platform, billing platform, CG) * remote maintenance operation on the above elements * locate, diagnose and fix problems in mobile networks * analysis and detection of complex network problems * update and control database of elements in mobile network * participation in projects and the implementation of new applications for monitoring and network management * creating improvements to the needs of the department (reports, scripts) * responsibility for contact with other telecom operators

gdc engineer

nokia

2016-5 - Present · 10 yrs 5 mos

senior it specialist

t-mobile polska

2014-4 - 2016-4 · 2 yrs 1 mo

* Responsibilities: * maintenance and administration of high availability online data rating system (Ericsson BSCS) * maintenance and administration of high availability mediation platform * Mediation Zone 5.x (Digital Route) * supervising of Mediation Zone platform development * maintenance of roaming part of rating/billing system – configuration, cooperation with roaming partners in data clearing, data exchange, tests * solving of current problems with above mentioned systems * help for last line of technical assistance