Senior Engineer in Quantrend，Oct. 2021 - now

• Maintain existing and develop new data-format and data-usage such as adding symbol, exchange, or different bar for different trading systems.
• Develop new architecture for high frequency trading.
  
• Risk-management detection mechanism  for existing trading systems.
• Refactor trading system for more clean architecture.
• Co-work with trader and machine learning engineer to design and implement new strategies for trading systems.
• Use Amason EKS for system devops.
• Use Cloudwatch and Slack for system warning mechanism and setup strict Risk-management rule for portfolio management.
• Recently become back-end leader

1. CTA Trading System  
   
2. Maker strategy Trading System
   
3. Hedger strategy Trading System
   
4. High-Frequency Trading System
   
5. Report System
   
6. Backtest & Hypertune for Trading System
   
7. System devops

Tech Lead in Aurora Tech，Dec. 2019 - Oct.2020

Leading a team of 15 people to jointly develop financial trading platforms, gaming , and back-end management systems. Planing the use of different system architectures and frameworks.

• Improve and implement distributed system architecture design 
  
• Compare the advantages and disadvantages of different tools and apply to the existing system 
  
• Plan and adjust the data structure of different databases (redis, sql, mongo) and message broker
  
• Plan and assign team work
• Assist team members with the Algorithm design 
• Tech meeting with team members twice a week 
• Code review 
• Running with scrum
  
• Establish the Product Development Process
  
• Devops

一、Financial Trading Platforms

• System development in golang (mainly in matching, risk management and trading rules)
• Matching engine use  redblacktree to store orderbook
• Cache financial positons and trading rules in Redis
• Use Redis PUB/SUB to broadcast Ticks to services
• Pool control to init/recycle un-use go routines (include financial symbols matching engine and risk management engine)
• GRPC in every internal services
  
• Devops in AWS
• Coordinate with product manager and provide suggestions with technical background

Senior System Analyst in Aurora Tech， July 2019 - Dec. 2019

一、Distributed System Architecture

• Study distributed system architecture and implement it in the system
  
• Plan the data structure of different databases (redis, sql) 
  
• Use docker & docker-compose to build a distributed system, and exchange information with rabbitMQ & GRPC
  
• Study k8s & Ingress  

二、Payment System

• Coordinate with product manager and provide suggestions with technical background
  
• Plan and assign team work
  
• Handling Payment APIs
• Devops in AWS
• Use RDS and AWS Aurora to replace docker SQL in production Enviroment
• Handling Load Balancing and Remote backup

Senior System Engineer in Webcomm Inc.，Sep. 2018 - July 2019

一、Taiwan Small and Medium Enterprise Bank Maintenance and Development Project

       -Risk Management System 

• Maintain existing risk management system ( Fix BUGs, data correction and performance optimization)
• Design and Implement new risk management system
• Disassemble the system into microservice
• Improve system performance

• APIs , Code review ,Task assign and Technical documents
• Develop new functions of Fubon Mobile Bank App: 
• Quick Login (mobile phone binding, fingerprint recognition, face recognition, gestures)
• Quick Search (login-free search system)
• Small fundraising system
• Accounting system 
• E-Home payment (transfer and deposit system)
• Push notification (broadcast system)
• Responsible for communicating with the client, including Fubon Bank Information Department and Fubon Bank Project Department, to understand the client's needs and adjust specifications. 　

In the project, we consider the information security encryption mechanism of each function, the use efficiency and retrieval speed of the database under the simulation of a large amount of data, as well as the calculation efficiency of the program, and carry out stress testing and calculation efficiency improvement and optimization.

According to statistics, two months after its launch, the number of users of various functions exceeded 100,000 and it was awarded the "Best Mobile Bank in Asia Pacific" by "The Asset".

https://www.fubon.com/banking/personal/mobile/index.htm

System Engineer in Webcomm Inc.，Sep. 2017 - Sep. 2018

一、Ministry of Finance Treasury Project  

• Implement a system for civil servants of the Ministry of Finance and the Treasury Agency. This project has six systems used by various financial departments
• The front-end uses AngularJS, and the back-end uses hibernate with SpringMVC framework for development.

二、Land Bank Maintenance and Development Project - Risk Management System 

• Maintain existing risk management system ( Fix BUGs, data correction and performance optimization)
• Upgrade SQL Server and JDK version
• Design and Implement new risk management system
• Use Google Cloud Platform (GCP) Cloud-SQL as production SQL server