20+ years active software programming experience, with expertise in designing and writing scalable, high performance, secure web and mobile applications.12+ years managerial experience, as hands-on manager running efficient engineering teams of 20+ developers, and 2+ Scrum teams.7+ years experience with digital currencies, including Bitcoins, along with securing the virtual currency platform against attacks and theft, both internal and external.12+ years working in China. Experienced in building an engineering startup in China from scratch, which includes WFOE setup and hiring/training a new engineering team from scratch. 11+ years experience working with integration and implementation of payment gateways and transaction of virtual goods and currencies.2+ years developing mobile apps that leverage IoT to talk to smart appliances.Certified Scrummaster, expert in Agile Software Management methodology, and experienced in nurturing efficient and effective Agile software teams.Experienced in hiring and mentoring developers to develop software of good quality with emphasis on code review, unit testing, security, performance, and maintainability.Skilled in Python/Django, Java, PHP, Perl, Nginx/Apache, C++, MySQL, Javascript, DHTML, XML, JSON, HTML, Ubuntu/CentOS, PayPal API, Amazon AWS/Aliyun, Nagios/Zabbix, GitHave worked with Flash, Actionscript, MDX, Mondrian OLAP, React, AngularJS and managed Mobile Development teams in Android and iOSU.S. Citizen, Hong Kong Permanent Resident