David Wang Email & Phone Number

Auckland, New Zealand

• Query rewriting: Training a model A to identify whether two queries are paraphrases with traditional classification algorithms. Then generating a big training data based on this model A. Finally training a transfomer.
• Elo recommendation system: Kagglers develop algorithms to identify and serve the most relevant opportunities to individuals, by uncovering signal in customer loyalty. This is a traditional regression problem which.
• Homecredit classification task: Homecredit makes use of a variety of alternative data--including telco and transactional information--to predict their clients' repayment abilities. This is a traditional classification.

Auckland, New Zealand

• Grasping design methodology (e.g. Kimball dimensional modelling) and BA skills for DW/BI
• Mastering popular toolsets such as SSIS, SSAS, SSRS and PowerBI
• Rich experience in Managed Services

Beijing, China

• Responsibilities
• As a solution architect, the main responsibility was analysing business requirement, controlling scope of work, discovering major risks from solution perspective, keeping clients and developers on the same.
• Creating a DW/BI system to help the telecommunication operator to select targeted customers for promotion, which greatly increases hit-rate and reduces human costs.
• Identifying 30million New Zealand Dollars (equivalents) of revenue leakage per year for customer by analysing business requirement, negotiating solutions with internal development team, controlling the scope of work.
• Creating a IPC(Intelligent Policy Centre) system which integrates BSS promotions and wireless policy control.
• Creating a PoC project to help customers understand the new possible business scenarios in BSS area under 4G wireless network as a delivery solution architect, which won first prize in the whole corporation.

Beijing City, China

• Responsibilities
• As a developer, the main responsibility was developing and optimising BSS systems written inC/C++ and Oracle PL/SQL
• As a service engineer, the main responsibility was delivering and maintaining BSS systemsStrengths and achievements
• Developing a top-up system for a telecommunications operator which supports 40million users. I designed the ER models, wrote all the oracle procedures, designed and installed the oracle database.
• Replacing Amdocs’ billing system with Asiainfo-linkage’s billing system which support more than 20million users after 2 year’s hard work.
• Optimising C/C++ code and promoting 3-times performance for a billing and balance system which handles more than 700million users’ roaming CDR for GPRS and info fee.

Beijing City, China

• Responsibilities
• As a developer, the main responsibility was developing new systems with C/C++ and Oracle PL/SQL
• As a service engineer, the main responsibility was Maintaining, troubleshooting, diagnosing and resolving issuesStrengths and achievements
• Rewriting and Immigrating a top up system from windows to AIX by using a self-written platform-independent multithread networking framework with C/C++ language. I also designed the oracle backup and recovery strategy.
• Developing a PHS(Personal Handy-phone System) “roaming” system which helped the customer to strengthen their competence in mobile market and reduce the trend of user losses. In the project, I wrote all the core.

Master Of Computer Applications - Mca, Computer Applied Technology

Bachelor Of Engineering - Be, Electronic Engineering