Xuenn is an E-Gaming company, which focuses on gaming and transaction platform development. As a solution architect, I plan the solution to improve the CI/CD flow, and leverage APM to find out the system bottleneck for the team. As a team member, I always ask good questions and give suggestions at the time.- CI/CD flow enhancement• Leverage SonarQube to do source code checking• Integrate automation testing with QA• Refine the build flow and make it more reliable• docker POC in windows env.- Leverage APM to find out the system bottleneck • As the key-man to lead the team to adopt APM• The first team to leverage the tech• The system requests over 35 thousand per second - As the key-man to do product development• the product is for private cloud automation to reduce manual operation• Golang sharing and coaching• Build up the framework and lib for the team- C#, Golang, Linux, Windows, Docker, Redis, MongoDB, Jenkins

Techidea is a startup company, which focuses on gaming and transaction platform development. As a manager, I build up the core modules for projects. I also discuss with the CEO to make sure the company goal is clear.- Responsible teams include Art/PM/RD/QA/DBA/DevOps• coordinate resources across different dept. to achieve the product goal• delivered 5 games and 1 platform in 6 months- Improve the process of the meeting• all members have to know the goal and action items before meeting • could not over 40 minutes - Coach DBA to build up a high-availability DB cluster- Leverage JMeter/Selenium/Airtest to enhance QA flow- Implement the framework for our product and TOI to team leaders- Implement core modules- Go, Linux, MySQL, Redis- Reason for leaving: the company went out of business

As a manager, I responsible for 3 teams, DBA/product/backend team. I am thecontact window for customers to solve the problems, and report to CTO and CEOdirectly. - 5+ project’s owner, and discuss requirements with customers- Build backend/product/dba team- System performance enhancement • The system's transaction record over 20 million per month • MySQL performance tuning, review/refine DB servers and saved 30% cost • Enhance the system performance by around 50% • Leverage ElasticSearch and Redis- Go, Linux, RDS, Nginx, Lua, MySQL, ElasticSearch, Redis

As the leader in rebuild-up backend infrastructure, I designed and implementedthe frameworks. I also launched a study group to share the frameworks designed.- Backend infrastructure• Designed the architecture and delivered the modules step by step• Defined the deploy steps and release note• Centralized logging mechanism• Reorganize system flow, decrease the error rate around 50% within more than double performance- Lead/Training members- Launched study groups- Migrate TFS to git- C#, Windows service, Web API, MS-SQL, JSON, XML, Graylog, MongoDB- Reason for leaving: reorganization

- Developed core web API- Developed a push notification system- Lead 4 members to develop web API and windows services- Python, C#, JSON, MS-SQL, Web API, Windows service, Linux

- Volumes processing for judge samples are malicious or not. • Processed samples around 1.8 million/day. • Malware behavior analysis and clustering to judge samples. - Developed an automatic re-process mechanism. - Enhanced system, and the error rate decreased around 50%. - Developed priority mechanism for important samples. - Data analysis • Develop reports to analyze system health and to know strange cases. • Obtain valuable data from database. - C#, Web Service, Windows Service, MS-SQL, Tibco, XML, Reporting Service, OpenRules, ActiveMQ, Drupal, JasperReport and Python.