Youn Sung
Software Development Manager at Google
Seoul, South Korea
Summary
👤
Senior🎓
Top SchoolYoun Sung is a software development manager based in Seoul with two decades of hands-on engineering and leadership across telecom, cloud, and realtime systems, currently leading software teams at Google. He brings deep expertise in IMS/RCS/VoLTE and LTE/5G protocols from driving Verizon and KDDI carrier projects at LG and launching the first full-function Verizon VoLTE device. A pragmatic engineer-manager, he blends low-level protocol debugging, telecom product launches, and automation (SIP analyzers, test frameworks) with modern backend development—his open-source contributions include extending Pinpoint APM with MQTT tracing and Kafka client tests. Known for turning complex interoperability requirements into production systems, he pairs systems-level thinking with prolific cross-domain experience from multimedia codecs to cloud-scale monitoring.
8 years of coding experience
18 years of employment as a software developer
Drop, Computer Science, Drop, Computer Science at University of Southern CaliforniaMaster, Computer Engineer, Master, Computer Engineer at Kyung Hee University
English, Korean
Stackoverflow
3reputation
6kreached
0answers
1question
Github Skills (12)
distributed-tracing10
mqtt10
javas10
java10
apm10
mqttnet10
kafka9
testing8
angular7
x509certificates6
certificate6
openssl6
Programming languages (4)
Github contributions (5)
pinpoint-apm/pinpoint
Aug 2020 - Nov 2022
APM, (Application Performance Management) tool for large-scale distributed systems.
Role in this project:
Backend Developer
Backend DeveloperContributions:4 reviews, 5 commits, 5 PRs in 2 years 3 months
Contributions summary:Youn contributed to the Pinpoint APM project by fixing a typo in the code and adding an exception option to the call stack search functionality within the web component. They also added a new plugin for the paho.mqtt protocol, which involved creating and integrating code for tracing MQTT protocol communications. Furthermore, the user added integration tests for the Kafka client plugin. These contributions indicate a focus on improving core functionality, adding new features, and extending the system's monitoring capabilities to support additional technologies.
performance-managementmanagement-toolmonitoringapplication-performance-managementlarge-scale
acafela/java-saml-example
Apr 2020 - May 2021
Contributions:57 commits, 28 pushes, 1 branch in 1 year 1 month
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