- Manage Cambodia IT Project Delivery- Manage Cambodia IT Infrastructure

- Manage system application service and hardware capacity (servers and storage).- Manage security gateways, load balancer and network firewalls.- Manage core network infrastructure and network connectivity.- Manage Data Center environment and availability (UPS, HVAC, cooling, server room, ...)

*** Voice- Manage Voice Gateway platform including Cisco AS5400, Cisco PGW 2200, Cisco Gatekeeper, Cisco Signaling Link Terminal (SLT), Cisco routers and Cisco switches- Manage Class 5 Softswitch, TDM switch, FXS/FXO gateway, GSM gateway and Call Center system- Manage National signaling point code (2041/2042), Operator short code (144), VoIP code (167), and international gateway code (008) licensed from Telecommunication Regulator of Cambodia (TRC)- Troubleshooting & analyzing… Show more *** Voice- Manage Voice Gateway platform including Cisco AS5400, Cisco PGW 2200, Cisco Gatekeeper, Cisco Signaling Link Terminal (SLT), Cisco routers and Cisco switches- Manage Class 5 Softswitch, TDM switch, FXS/FXO gateway, GSM gateway and Call Center system- Manage National signaling point code (2041/2042), Operator short code (144), VoIP code (167), and international gateway code (008) licensed from Telecommunication Regulator of Cambodia (TRC)- Troubleshooting & analyzing on Voice protocols, signaling, interfaces and technologies including SS7, SIP, H323, ISDN BRI/PRI/CAS, T1/E1 PRI, TDM/STDM , PBX/PSTN, FXO, FXS, CO, ATA, POTS, DTMF, DID, NANP- Manage Voice interconnection (Peering/Trunking) with local phone operators and oversea VoIP carriers- Manage Interconnect billing system, carrier management, rate management, invoice generation, invoice verification, dispute resolution and more- Coordinate with Marketing and Products team to define and support voice services including: Virtual IP PBX, Calling card and 2 Stage dialing, Voice termination service, Public Payphone and more- Coordinate with software vendor to develop TalkPC, TalkWeb and TalkMobile app to allow ONLINE customer using voice service on PC, Web, iOS, Android, Symbian and Windows Phone OS devices- Responsible for daily, weekly, monthly, ad-hoc report and data collection for MPTC, TRC and DMC*** System- Manage platform for DNS, Email, VPS and Web Hosting services- Manage Network traffic monitoring system and System performance monitoring system- Manage AAA including Radius, TACACS, and Windows Active Directory- Manage Content Delivery Network (CDN) including Google cache, Facebook cache and PeerApp caching system- Manage Virtualization infrastructure, Server, Storage and Security Appliance- Manage system integration, scripting and automation using Ansible, Shell, Perl, PHP and PowerShell- Manage Oracle, MS SQL Server and MySQL database- Manage local IT administration Show less

- Manage Internet, VoIP and IP TV (Triple Play Services) Billing System including subscriber and account management, billing provisioning and mediation, bandwidth and data usage management, rating, invoicing, lock/unlock policy and more- Manage billing system platform including servers, storage, database, application service and ensure 24/7 up time- Manage billing development including adding and customizing report, applying business model such as discount, double speed and other… Show more - Manage Internet, VoIP and IP TV (Triple Play Services) Billing System including subscriber and account management, billing provisioning and mediation, bandwidth and data usage management, rating, invoicing, lock/unlock policy and more- Manage billing system platform including servers, storage, database, application service and ensure 24/7 up time- Manage billing development including adding and customizing report, applying business model such as discount, double speed and other promotion- Manage billing operation, issue and complain resolution and ensure billing cycles are completed timely and accurately - Manage application development and software project Show less

- Develop Billing System including BS/IBS provided to some internet service providers and WiseBiller provided to a fixed phone operator in Cambodia- Develop Internet Hotspot solution provided to some hotels in Phnom Penh, Siem Riep and Sihanouk Ville- Develop Calling card system base on open source project- Develop IP PBX system base on open source project- Compile product documentation and conduct product training and presentation

- Manage IT administration including computers, printer, scanner, cable connectivity and more- Manage network devices including switches, router and ISP internet connection.- Develop company's website and Resume Management System- Provide training on Advanced MS Excel to client company's employee.