I was invited by David to join Largitdata to help establish a pioneering market leader that provides customers with speedy and precise public opinion analysis services. At Largitdata I'm responsible for all the engineering: ● Building up a R&D team from zero● Architecting the whole Product● Refactoring and Continuous improvement with cutting-edge technology

The mission here was to:● Build up a new Taiwan R&D team to take over the China team● Rephrase old Media Infra architect● Act as Scrum master for new Product development, rollout, and data-driven operation

Full stack data architect● Plan and design data flow from Front-end Production OLTP to Back-end Decision making OLAP● Plan and design OLTP model in Cassandra and Mongodb ● Plan and design real-time streaming ETL workflow● Plan and design batch ETL workflow● Plan and design near real-ime ETL workflow● Integrate all the internal system data flow with Production systemSide project - A Search engine for identifying spec of mobile device● architected and built a search engine from the ground-up for identifying spec of mobile device.

ETL developing and data model design● Co-work with Marketing guys for collecting BI requirement● Design dimension model in RDB for BI tool● Co-work with Developer for Implementing ETL from log/event data to dimension model● Data technology research (NOSQL, big data framework, Tech blog )Side project - Scrap external data for BI & Research purpose● Build mobile device spec database from external website● Build Movie/Series metadata database from external website

Product refactor - DB Security product(DAM) - dbAegis● Data model refactor - Denormalization for audit log schema● Develop File search engine - Split Mass-tuple log data from database to file system● Develop Inspection engine - Calculate log data (real time) for Substitute SQL aggregate query of static log● Experimental - Survey nosql DB for store mass audit log data● Technologies: Java, redis, cassandra, Shell/sed/awk, rubyInitialization on License Mgmt: A system being used in managing all product licenses.● Coordinate with each product PM and Unified authorization process for all products.● RSA public-key cryptography implementation.● Develop mail server crawler for license application.● Build up web base application for managing and authorizing licenses.● Technologies: Rails, Ruby, twitter bootstrap, backbone, coffeeRefining release process for software development cycle● Introduce new SCM for source code management - Git● Formulate development process and release process ● Deploy an awesome GitHub-like platform for internal usage - GitLab (open source project on GitHub)● Technologies: GIT, GitHub, GitLab

● Initialization on new product for sync Informix DB to heterogeneous DB (real-time) and integration to Oracle GoldenGate● Product development - Technical ProjMgmt, SD, Programming● Product management - Training plan, Requirement mgmt● Informix database research - Transaction log● Coordinate with Oracle RD (@US) and Senior RD of company for Development phase● Coordinate with Oracle consultant (@China) and co-work Partner for POC phase.● International cooperation experience● Technologies: Java, ActiveMQ, Shell/sed/awk

● Product maintenance - bug fix, patch, producibility● Unix-like system management/development - common utility tool compile/deploy● Oracle/Informix database research - System table, indexing, execution plan● Oracle database management practice● Continuous Integration practice● Technologies: C, embeded-sql, shell/sed/awk, Tcl/tk