Hao-Ming (Timothy) Chen Email & Phone Number

Mountain View, Ca, Us

San Francisco Bay Area

Machine Learning Models - detect malicious scripts in the anti-virus engine.* Built production-ready XGBoost models from scratch: 97.5% detection rate; 0.02% FP rate.* Conducted research on malicious scripting file features and obfuscation.* Closely collaborated with Researchers to iteratively enhance models.Deep Learning Models - detect malicious behavior in enterprise network traffic on Cloud.* Trained embedding LSTM models with millions of data.* Utilized PySpark Streaming and Hadoop to parallelly extract features of gigabyte-scale raw data per second and predict classification on AWS EMR.* Constructed a framework with Keras, Scikit-learn and Pandas to streamline workflows.Improved Android anti-virus engine testing performance and developed features.* Reduced test execution time to 1/10.* Created 180+ test cases and scripts, including regression and force-error tests.

Greater San Diego Area, Taipei

Developed a social drawing iOS App and SDK which supports offline mode.* Handled data synchronization and database schema migration of CoreData/SQLite.* Supported offline feed composing by implementing thread-safe background queues.* Implemented a keyword-based search engine for purchase items.* Enhanced scrolling performance with image cache.* Built 600+ test cases to ensure SDK stability with mock servers.

Taipei City, Taiwan

Led Mobile Ad Network teams to make better products.* Revampedarchitectureoflegacysystemsandkeptbackwardcompatibility.* ShortenedAdservingtimeto1/10viacoderefactoringandDjangoORMqueriesoptimization.* ApplyingMachineLearninguser-basedrecommendationalgorithmtodeliverAds. * OptimizedanimationplayingperformancewithHTML5andCSS3.Built a Java website and an iOS App for Taiwan top department store.* AdoptedJavaSpring,StrutsandHibernateframeworkstoimprovewebsitestability.* CompletedRESTfulAPIimplementationstotransferdatabetweenserversandclients. * ImplementedOAuthtoprovideasafeandsecureloginauthentication.

Taipei City, Taiwan

Pioneered cutting-edge technology of Stereoscopic 3D and Autostereoscopy.* Created Maya plug-ins for artists to control stereoscopic camera movements.* Advanced the interoperability of camera trajectory settings among 3D softwares by developing corresponding plug-ins.* Defined metrics of perceived stereo effect, resulting in efficiency gains in workflows.* Introduced stereoscopic technology to each department and mentored them to integrate the new technology with their traditional production pipelines.* Collaborated with ODMs to customize contents based on their hardware advantages.* Created 3D animation pipeline tools and Maya plug-ins for animators.