HY Chang
@hychang
Senior backend and systems engineer building high-performance cloud and embedded Linux services.
TaiwanWhat I'm looking for
I’m a senior backend and systems engineer focused on cloud infrastructure and embedded Linux, with a background in GCP and distributed systems. At Aeon Motor Co. Ltd, I developed Croxera smart-vehicle backend subsystems (RBAC, API key management, reverse proxy, load balancing, gateway, push notifications), improving system throughput by 2x–7.7x and reducing monthly infrastructure costs by 20% through profiling and refactoring.
I also bring production security and reliability skills from fintech work—at First Commercial Bank I addressed TLS, XSS, and CSRF vulnerabilities, integrated blockchain-backed document confirmation, and used Grafana to debug cross-data center issues. Earlier, at BiiLabs, I built embedded Linux IoT data pipelines (OBDII → IOTA), designed FOTA for firmware updates, and researched privacy-preserving advertising using Zenroom (ZKP VM)—backed by hands-on open-source contributions like porting ZKP VM to Cortex-M4 and syscall batching on Linux.
Experience
Work history, roles, and key accomplishments
Senior Backend & System Eng
Aeon Motor Co. Ltd
Apr 2023 - Present (3 years 2 months)
Developed and maintained core backend systems for the Croxera smart vehicle platform (RBAC, API key management, reverse proxy, load balancing, gateway, push notifications), improving throughput 2x–7.7x and reducing monthly infrastructure costs 20% via profiling and refactoring. Built automated GCP-native backup pipelines and CI/CD processes to reduce deployment errors.
Software Engineer
First Commercial Bank
Jun 2022 - Mar 2023 (9 months)
Maintained a financial confirmation system, resolving TLS, XSS, CSRF, and memory inspection vulnerabilities. Implemented blockchain-backed document confirmation and PDF report generation, and used Grafana with packet tracing to debug cross-data center issues while optimizing SQL queries and modernizing legacy Spring codebases.
Software Engineer
BiiLabs
Feb 2020 - Sep 2021 (1 year 7 months)
Developed embedded Linux IoT devices to transmit OBD-II data to the IOTA blockchain and designed a firmware-over-the-air (FOTA) update system with an accompanying dashboard. Researched privacy-preserving advertisement technology using Zenroom (ZKP VM) and built customized open-source mapping systems with Golang and React.
Education
Degrees, certifications, and relevant coursework
National Taichung University of Science and Technology
Bachelor of Information Technology, Information Technology
2012 - 2019
Earned a Bachelor’s degree in Information Technology from National Taichung University of Science and Technology from 2012 to 2019.
Tech stack
Software and tools used professionally
Availability
Location
TaiwanAuthorized to work in
Job categories
Skills
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