Danka Djurisic

Experience

• 

  Crnogorski Telekom

  Apr 2014 - now

  • Participating in actions necessary or appropriate to ensure that invoicing activities and financial data are accurate and generated timely.• Auditing customer invoices to verify accuracy.• Identifying errors or omissions in billing.• Providing assistance in research and resolution of client billing issues and inquiries.• Writing comprehensive SQL queries and stored procedures in order to provide accuracy of charging and invoicing data.• Define test plans and test cases while performing testing of new functionalities and billing products.• Managing and processing payment files received from banks/atms/post offices in a timely and accurate manner.• Monitor successful completion of daily scheduled jobs; troubleshooting job failures.• Assist with quality assurance, internal- and external audit fieldwork in the Charging, Roaming, Account Receivables, Collections areas as requested.• Provide billing support for Customer Care team to resolve client invoice disputes.• Support Account Receivables accountants with operational billing questions.• Help with additional projects and tasks related to Revenue Assurance, Fraud and Roaming as they arise. Show less • GSM/GPRS/CAMEL/UMTS tests validation and TCC issuance.• Roaming partners, IREG and Roaming Coordination team support.• Test file generation in billing system and distribution to Roaming partners via DCH (Data Clearing House).• New Roaming partners/service implementation in billing system.• Transfer Account Procedure TAP (TAPIN, TAPOUT) files handling.• TAP IN/OUT data quality check.• Monthly exchange rate setting & fluctuation monitoring.• Cooperation with Data Clearing House DCH.• Service Tickets handling & escalation.• RAP handling, disputes, escalation and support.• Near Real Time Roaming Data Exchange NRTRDE operational activities.• Roaming regulation implementation.• Participation in project of migration to TAP 3.12 format.• Customer support, complaints (wholesale/retail).• Finance, fraud, revenue assurance and mediation departments support. Show less • Designing functional test cases based on HLD/IDD (High Level/Interface Design Documents) • Executing the functional tests ensuring all results are documented.• Reporting defects discovered during UAT phases (User Acceptance Test).• Monitoring and retesting reported defects.• Participating in network integration testing.• Generating usage extracts from legacy system used for usage2usage/bill2bill testing.• Analyzing discrepancies found during usage2usage tests (comparison of charged events on legacy system and new Amdocs Convergent Charging System).• Working closely with Amdocs developers, testers and remote support teams. Show less

  • Senior Chief Billing Specialist

    Aug 2007 - now

  • TADIG Roaming Specialist

    Aug 2007 - Mar 2021

  • Software tester of Amdocs Convergent Billing system

    Apr 2014 - Oct 2015