Customer Network Support Engineer
Ericsson - Vietnam, Ho Chi Minh City Jul 2016 - Mar 2023
- Provided customer support in technical consultations, feature requests and troubleshooting for customer network faults via CSR (for 2G, 3G and 4G mobile networks which included equipment from Ericsson vendor)
- Responsible for debugging and resolving complex product problems by applying both established procedures and creative alternatives
- Flexibly took part in projects as an integration engineer as needed
- Familiar with the virtual IMS core network relevant 3GPP knowledge, such as network architecture, network elements and functions, call flows
- Latest project: Mobifone vIMS, May 2021 to March 2023: Deployed parts of NFVI and performed parts of the internal ATP of NFVI; then mainly deployed IMS VNF nodes; tested ATP for IMS VNF nodes; tested ATP for E2E IMS services and features; guided the staff of this operator in O&M documents; fixed the issues; provided customer support for the 6-month trial run phase; and handled customer network faults for vIMS network CSR after the handover of the project
Senior Services Engineer - Integration Engineer
Ericsson - Vietnam, Ho Chi Minh City Nov 2008 – Jul 2016
- Deployed new Ericsson nodes for start-up, integration, troubleshooting and performed acceptance test
- Supported cut-over or migration services of switching exchanges as MSC, HLR, MGW, UDC or IMS nodes in native or cloud environment
- Updated and upgraded software for above switching exchanges
- Regularly updated customers and Ericsson technical and management staff regarding project planning, progress, issues and solutions
- Guided customers in Operation and Maintenance activities
Core Network Senior Technologist
Nortel Networks - Vietnam, Ho Chi Minh City Jun 2006 - Oct 2008
- Managed Services operation and maintenance of Nortel equipment in the HT-Mobile Network (now called Vietnam Mobile Network)
- Cooperated with the Nortel India team to provide solutions for supporting trouble tickets
- Participated in the project team from Nortel China for upgrading, expanding the existing nodes, or installing new nodes
- Assisted HT-Mobile managers to review and assess the network stability, performance, or network planning
