Chang-Han Chiang
Software Engineer
Taipei
Overview
2026
2026
years of professional experience
7
7
years of post-secondary education
Work History
Backend Engineer
XY Fiance
01.2025 - Current
- Developed core backend logic using FastAPI and SQLAlchemy, focused on modularity and performance.
- Designed and implemented an Alembic-powered migration system supporting isolated schema management, dynamic environment loading, and custom version tracking.
- Created CLI entrypoints for seamless local testing and developer experience.
- Integrated Docker-based migration jobs with Kubernetes and CircleCI for automated schema rollout during deployment.
Backend Software Engineer
MixerBox Corporation
8 2022 - 8 2024
- Led software function ideation, development, and performance analysis.
- Architected and implemented a robust notification system for MixerBox PointsClub, a raffle application, supporting over 10,000 daily active users.
- Led redesign and migration of a critical part of database, improving related query performance by 80%.
- Designed a comprehensive festive giveaway event on raffle App, contributing to a 10% increase in user engagement of App.
- Developed an automated update system for tracking feature performance, enabling team members to monitor results in real-time, which reduced team development time by 30%.
- Optimized SQL queries and refactored 1,000+ lines of code, reducing API latency by 30% and server costs by approximately 50%.
Firmware Engineer Intern
Tomofun
3 2021 - 7 2021
- Developed the new firmware version for the company's primary product.Developed and refactored the firmware code for a new version of the company's core product, enhancing performance, maintainability, and scalability.
- Investigated and resolved issues in the legacy firmware identified through customer support inquiries, improving product reliability and customer satisfaction.
Software Engineering Intern
Trendmicro
09.2018 - 03.2019
- Conducted data analysis on URLs to assess and determine web page security.
Firmware Engineer Intern
MIGO Corporation
03.2017 - 09.2017
- Rewrote legacy firmware code to improve performance and optimize system efficiency.
- Enhanced the stability of data transmission across the network.
Education
Master of Science - Data Science Degree Program
National Taiwan University (NTU)
Taipei, Taiwan 05.2019 - 08.2021
Bachelor of Science - Computer Science and Information Engineering
National Taiwan University (NTU)
Taipei, Taiwan 05.2014 - 02.2019
Skills
Programing Languages:
Advanced: Python
Intermediate: C/C
Basic: HTML/CSS/JavaScript
Database: MySQL, PostgreSQL
Platform & Tools: AWS, IFTTT, Onesignal
DevOps & Version Control: Git, GitHub, GitLab, Bitbucket, Docker
Accomplishments
- Achieved 4th place in the High School Mathematics Proficiency Competition and participated in the National Mathematics Olympiad Training Camp.
Timeline
Backend Engineer
XY Fiance
01.2025 - Current
Master of Science - Data Science Degree Program
National Taiwan University (NTU)
05.2019 - 08.2021
Software Engineering Intern
Trendmicro
09.2018 - 03.2019
Firmware Engineer Intern
MIGO Corporation
03.2017 - 09.2017
Bachelor of Science - Computer Science and Information Engineering
National Taiwan University (NTU)
05.2014 - 02.2019
Backend Software Engineer
MixerBox Corporation
8 2022 - 8 2024
Firmware Engineer Intern
Tomofun
3 2021 - 7 2021
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