William (Wei-Jen) Tsai

Manager III  •  Syscom Computer Engineering Co.

2019/01 - Present

Tech Stack: HTML/CSS/jQuery/Python/K8s/Docker/Ceph/gRPC/C++/OpenCV/websocket

As a technical project manager, hands-on 70% technical works including architecting the whole AI PaaS and some components within, detail described below:

Technical Contributions:

• Enable an interface for supporting multiple media sources for object recognition, including RTSP streaming and HTTP upload. Also, images and videos were supported.
• Develop a k8s-based job orchestrator of computing resource allocation.
• Use Ceph to build storage for the k8s cluster.
• Developing an AI worker boilerplate to support the aforementioned orchestrator with miscellaneous AI engine support, such as YOLO, ResNet, etc... The built-in SDK was developed to enable job status watching, progress reporting, and job control.
• Developing an algorithm or the video condensing engine, to reduce the length of surveillance camera video.
• Some specified YOLO-based recognition models were trained for verification of PaaS and related applications.
• Developing the facial feature based person identification web service and derivative applications, including the below functions:
  • Person to person comparison.
  • Unknown person identification.
  • Person identification in the video file.
  • Use Nginx, WebSocket(Python Flask, Socket.io), FFmpeg, and reverse proxy (for fitting limited network configuration) to develop RTSP-streaming based real-time person identification.
• Developing webcam-based real-time person identification by the following tech stack:
  • Microsoft Visual C++ CLR Winform Lib
  • Microsoft SQL Server Express
  • OpenCV
• Developing crawler for social networks by Selenium

Leadership Contributions:

As a project manager, leading a team for AI applications development and PaaS from 0 to 1.

I am a believer in servant leadership, and I spent a lot of time listening to my squad members to understand their requirements. As a team leader, I am a bulldozer for eliminating any obstacles. However, not only as a servant - I also tried to be a mentor for my squad, considering they are laymen of employment (< 1y experience), my main task in management is teaching experience, including communication skills, logical thinking, and technical skills:

• How to describe the problem/issue exactly
• How to divide-and-conquer the complex problem
• How to describe the situation for non-tech people
• Principles of technical design

CTO & Co-founder  •  SPQ Inc.

2017/09 - 2018/12

Tech Stack: HTML/CSS/jQuery/React Native/node.js/websocket/AWS Lambda/AWS EC2

As co-founder, I recruited people in this career stage, shaping the team with multiple functions for developing the social-matchmaking product, including UI/UX specialist, marketing specialist, front-end engineer, and site reliability engineer (SRE). Martech and Fintech support were considered in development.

Technical Contributions:

Develop iOS and Android App by React Native. Using node.js with AWS Lambda to develop a backend.

• Use WebSocket to implement SMS communication.
• Use Kurento to implement streaming communication.
• Connect Google Speech Recognition.
• Facilitate SMS communication by Google translation.

IT Junior Manager  •  Yuanta Investment Consulting Inc.

2016/6 - 2017/9

Tech Stack: HTML/CSS/jQuery/.Net Core(C#)/MS SQL

Leading in-house development instead of outsourcing saved about 3M NTD per year.

Technical Contributions:

• Implementation and analysis of an automated trading system.
• - Financial data analysis for supporting equity research.
• - Internal IT system development and maintenance, including the following items:
  • Research report distribution system
  • CRM
  • Web crawler
  • Financial data hubs, which are connected with big data sources such as Bloomberg, CMoney, etc.
• Paper portfolio simulator
  • Collect daily stock prices for trading simulations.
  • Evaluate the portfolio from a timeframe-based perspective.
• Official website development
  • The first paperless registration in Taiwan research website, co-operated with the compliance division to design the process.
  • Member management, deliver equity research reports, some typical stuff.

Software Engineer  •  Funnow.

2015/10 - 2016/3

Tech Stack: HTML/CSS/jQuery/PHP/MySQL

Mainly as Web-frontend. Collaborate work with UI/UX/graphic designers.

Technical Contributions:

• Design and build web-based merchant UI for product management in FunNow.
• Involved backend architecture design & definition at an early stage.
• Build the official website with RWD support, and enabled the payment function.

Engineer  •  Innooz Inc.

2015/1 - 2015/6

Tech Stack: Swift/HTML/CSS/jQuery/PHP/MySQL

Mainly as iOS frontend.