Sungju Jin
Staff Software Engineer at The Apache Software Foundation
California, United States
Summary
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SeniorSungju Jin is a Staff Software Engineer based in California with 13 years of experience building and scaling data-intensive systems using Java, Python, Scala, and Go. He has designed end-to-end realtime and batch data infrastructures at companies like Udemy and Twilio, operating at tens of billions of records per day with technologies such as Spark, Kafka, Presto, Hudi, and Redshift. A prolific contributor and PMC at The Apache Software Foundation, Sungju has practical open-source impact on projects including Apache Usergrid and integrations like spark-redshift. He combines hands-on implementation (owning daily production commits and bespoke data frameworks) with infrastructure-as-code expertise using Terraform and Ansible to deliver reproducible, operable platforms. Known for speaking at conferences like ApacheCon and OSCON, he brings both developer culture advocacy and deep operational experience to large-scale data problems. An interesting note: early work on cloud platform services and push-notification systems informed his long-running focus on high-throughput, reliable ingestion and messaging architectures.
13 years of coding experience
10 years of employment as a software developer
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (10)
javas10
api10
back-end-development10
apidoc10
java10
api-design9
restful-api9
spring-boot9
rest-api9
api-rest9
Programming languages (6)
Github contributions (5)
apache/usergrid
Sep 2012 - Oct 2014
Mirror of Apache Usergrid
Role in this project:
Back-end Developer
Back-end DeveloperContributions:45 commits in 2 years 1 month
Contributions summary:Sungju primarily focused on back-end development, specifically addressing issues related to password reset flows and mail sending functionalities. They fixed a NullPointerException (NPE) in the user password reset flow and refactored the mail sending method. Further, they extracted a configuration file, and worked on revoking tokens. Their contributions also involved adjusting endpoints.
javaapache
sungjuly/apache-way
Dec 2013 - Nov 2015
apache-way
Contributions:10 commits, 1 push in 1 year 11 months
database-accessconnectorosgiapacheapache-flink
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