Hsi-Teng (Sean) Liu

Senior Software Developer & AI Solutions Architect

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About Me

Currently Studying

Applied A.I. Solutions Development
Graduate Certificate Program
George Brown College
Jan 2025 - Dec 2025

Education

Computer Science, B.S.
Rensselaer Polytechnic Institute
Troy NY, USA

Experienced software developer with over 20 years of expertise in system integration and enterprise solutions. Currently expanding my skillset with AI solutions development to provide meaningful contributions to AI-integrated systems.

I specialize in designing and implementing complex messaging services, chatbot systems, and secure financial applications for major banks in Taiwan. My experience spans from full-stack development to system architecture, with a strong focus on scalable, secure solutions.

Based in Toronto, ON, I'm seeking senior developer roles where I can leverage my extensive background in system integration and growing expertise in AI solutions.

Key Projects

Apple Messages for Business Integration

Designed and implemented messaging service integration with Apple Messages for Business for a major bank in Taiwan, enabling seamless customer communication through Apple's business messaging platform.

FastAPI Python Banking Integration

State Machine Chatbot System

Created a configurable state machine-based chatbot backend supporting messaging services connected to LINE Messaging for multiple banks in Taiwan, minimizing code changes through configuration.

.NET Web API C# State Machine LINE API

Salesforce Marketing Cloud Custom Activity

Designed and implemented a custom activity and backend for Salesforce Marketing Cloud Journey that sends custom push messages for a bank in Taiwan.

F# React Salesforce Marketing Cloud

Secure PII Handling System

Developed on-premise backend service and Salesforce Lightning Web Components to ensure secure PII data handling on Salesforce platform for banking clients.

Salesforce LWC Security PII Protection On-Premise

Real-time Messaging Service

Built LINE messaging pushing Windows service that receives requests via Kafka for high-throughput message processing and delivery.

C# Kafka Windows Service Real-time Processing

AWS Data Archival System

Implemented daily archive system for customer messages to AWS S3 Glacier, ensuring long-term data retention and compliance for banking clients.

AWS S3 Glacier Data Archival Automation Compliance

Technical Skills

Programming Languages

  • C#
  • Python
  • JavaScript
  • F#
  • Java

Frameworks

  • FastAPI
  • Flask
  • .NET Web API
  • React
  • ASP.NET MVC

Libraries & Tools

  • SQLAlchemy
  • Scikit-Learn
  • Pandas
  • Jupyter Notebook

Infrastructure

  • Kafka
  • RabbitMQ
  • Redis
  • AWS S3 Glacier
  • MS SQL Server

Professional Experience

Technical Director

Gump Technology, Taipei Taiwan | Oct 2017 - Present

Leading development of messaging services, chatbot systems, and Salesforce integrations for major banks in Taiwan. Specializing in secure, scalable solutions for financial services.

Assistant Vice President

Ezfunds Securities Investment, Taipei Taiwan | Jul 2010 - Sep 2017

Led migration of mutual fund trading platform to ASP.NET MVC, managed team of 5 developing native mobile apps, and designed systems interfacing with Taiwan's Department of Treasury.

Manager of Information Technology

Chunghwa United Telecom Group, Taipei Taiwan | Apr 2007 - Aug 2008

Designed and implemented video streaming platform from scratch and developed news website using Java and JBoss Seam technologies.

Team Lead

Blue Technologies, Taipei Taiwan | Nov 2005 - Mar 2007

Led small team designing and implementing Java-based solutions for clients while training colleagues on new technologies.

Let's Connect

Email

Hsi-Teng.Liu@georgebrown.ca

Phone

(437) 875-4356

Location

Toronto, ON, Canada