National Taiwan University

國立中央大學

Appier Software Engineer

Taiwan, Taiwan

Appier

Software Engineer

Cloud service infrastructure design, adopting AWS technology to build an advanced backend service infrastructure by using AWS.Spam, phishing and scam email samples analysis and provide either ML solution or heuristic algorithm.• 2018 Q1 Employee of Quarter Award• Migrate TrendMicro Data Center to AWS Migrate traditional backend service and solution in data center to a fully automated, high scalable and availability infrastructure in AWS cloud service. (AWS, restful web service, flask, RDS, mongoDB)• ETL , Query log analysisRedesign and implement ETL flow adopt AWS step function, EMR, apache spark Livy instead of Hadoop and cronjob.Aggregate unstructured data to parquet format.  (ETL, AWS step function, lambda, spark )Build Spark ETL flow and analysis edge service query log about 2.4 billions (30 TB) records daily (pyspark)• Hybrid AWS Spot fleet and on-demandRefactor legacy CI/CD process with CircleCI, AWS Cloudfomarion for deploying hybrid Spot and on-demend with AWS AutoScaling group, Application Load Balance, reducing about 40% - 60% AWS billing (CICD, AWS boto3, Cloudformation)• Global service developmentDesign and implement huge capacity global service about 10,000 qps for customer query backend solution in golang gin framework and fully adopt TDD. (Golang, Gin, docker , Redis , Route53, TDD) Training models in Python and serving with Go through GRPC over Protobuff (GPRC, Protobuff)• Phishing & Scam sample collection and detection Design and implement flow from honeypot auto training and labeling suspect phishing or scam samples (spark, gensim, fasttext)Visualization : Propose and implement email sample and labeling platform make team members more convenient to do research. (django, vuejs, AWS athena, Chrome Headless )

Trend Micro

Senior Software Engineer

3.5 years of experience as full-stack developer working in Information & Communication Security Department in Chunghwa Telecom.• CHTD device manage system [2012]   Maintain and refactor a device management system.• CHT Vulnerability Scan System. [2013]Design and building a manage system which has over 1 million devices and their vulnerabilities in whole CHT.Get performance appraisal in top 10% and a promotion.• Website Protection Service [2014-2015]Developing a website defacement detection, malware scanner, and health checking system.Using Web Sandbox, VMware ESXi console API, webkit2Png, SIFT(Image featurecompare), nagios, mongoDB, Webpack and ReactJS.• Social Engineering System [2015]Design Phishing as a Service (PHaaS) system helping government institution understandhow many employee click or open attachment from our testing spam mail.• Building Vulnerability Scan Automated Platform in Website Protection Service andCTBC [2015-2016]Design a framework to control Nessus 6 API by Python.Adopt Scrum to team member and project manager.

Larry Chen