Joy Z
Software Engineer
Berkeley, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJoy Z is a software engineer based in Berkeley with 10 years of experience blending cloud-native backend development and data-driven analysis. She holds an MEng in Industrial Engineering & Operations Research and a BA in Economics and Data Science from UC Berkeley, pairing rigorous quantitative training with practical software skills. Proficient in Python, Go, Java, R, and tools from Pandas and scikit-learn to Docker and Kubernetes, she focuses on building reliable, high-performance services—her GitHub contributions include core work on a high-performance MQTT broker (hmq) adding features like WebSocket support, ACLs, and broker state monitoring. Joy enjoys collaborating across teams and teaching, having served as a GSI for Econ 2 and as a data-focused academic intern, which informs her knack for translating complex analytics into business impact. She is motivated by applying analytical tools to real-world problems and takes particular satisfaction in shipping changes that measurably improve system reliability and user outcomes.
10 years of coding experience
Master of Engineering - MEng, Industrial Engineering and Operations Research, Master of Engineering - MEng, Industrial Engineering and Operations Research at University of California, BerkeleyInternational Baccalaureate Diploma, International Baccalaureate Diploma at Jumeira Baccalaureate School
Chinese, English
Github Skills (12)
golang10
mqtt10
goroutine10
broker10
brokers10
go10
networking10
mqttnet10
concurrency9
websocket9
acl9
clustering8
Programming languages (9)
Github contributions (5)
fhmq/hmq
Aug 2017 - Dec 2021
High performance mqtt broker
Role in this project:
Back-end Developer
Back-end DeveloperContributions:13 releases, 49 commits, 85 PRs in 4 years 4 months
Contributions summary:Joy primarily worked on the `hmq` MQTT broker, implementing and modifying core broker functionalities. Their contributions include adding features for remote connections, including support for connecting to routers and broadcasting information messages. They also refactored and improved the client management code, added webscoket support, and implemented an ACL (Access Control List) feature for enhanced security and access control. Furthermore, they contributed to the queueing mechanism and added the ability to monitor broker state.
golangbrokermosquittobridgemqtt
linuxep/lepv
Jan 2017 - Jul 2019
web backend and frontend for LEP
Contributions:49 commits, 4 PRs, 62 pushes in 2 years 6 months
web-backendbackendnodejsfrontendlep
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