Xiaodong Deng
Staff Software Engineer at The Apache Software Foundation
Cupertino, California, United States
Summary
🤩
Rockstar🎓
Top SchoolXiaodong Deng is a Staff Software Engineer at Apple with 11 years of experience building data-first systems and production-grade backend services. He combines deep SQL and data engineering expertise with DevOps and security-minded contributions to large open-source projects—most notably as a long-standing Committer and PMC member on Apache Airflow where he fixed security issues and improved S3/Kubernetes integrations. His career spans fintech and healthcare platforms, leading small teams to deliver workflow orchestration, metadata APIs, and ML pipelines at scale. Comfortable across Python, container platforms, and distributed executors like Celery, he focuses on shipping reliable, auditable data workflows rather than "talking" about them. He holds a Master’s in Mathematics from NUS and keeps a practical public portfolio of SQL exercises and tooling on GitHub. Outside work he runs and is a licensed pilot, a hint at his discipline and appetite for complex systems.
11 years of coding experience
9 years of employment as a software developer
Bachelor of Science (BSc) Applied Mathematics, Bachelor of Science (BSc) Applied Mathematics at Beijing Forestry UniversityMaster's Degree Mathematics, Master's Degree Mathematics at National University of Singapore
Chinese, English
Stackoverflow
1reputation
0reached
0answers
0questions
Github Skills (30)
apache-airflow10
kubernetes10
sql-query10
python10
back-end-development10
workflow-engine10
celery10
schema-design10
subquery10
security10
sql10
database-design10
db-schema10
kubernetes-pods10
database-schema10
Programming languages (17)
Github contributions (5)
XD-DENG/SQL-exercise
Nov 2015 - Nov 2019
Practice with "Real" SQL Problems
Role in this project:
Back-end Developer & Database Engineer
Back-end Developer & Database EngineerContributions:1 review, 34 commits, 14 PRs in 4 years
Contributions summary:Xiaodong primarily contributed to solving SQL exercises within the repository. They focused on writing and modifying SQL queries, implementing database schema, and inserting data. The user demonstrated proficiency in a range of SQL concepts, including SELECT, JOIN, and subqueries, as well as data manipulation techniques such as updating and deleting data. Their work directly involved the creation and modification of database schemas and data, enhancing the repository's ability to address various SQL problem scenarios.
postgresqlproblemssqlmysql
apache/airflow
Jul 2018 - Apr 2024
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:658 reviews, 455 PRs, 238 pushes in 5 years 9 months
Contributions summary:Xiaodong primarily contributed to the Apache Airflow project by fixing bugs and improving the system's security and functionality. They addressed a security vulnerability related to the Flask SECRET_KEY, removing unnecessary code and refining the scheduling & UI features in addition to fixing bugs within the CeleryExecutor. Furthermore, the user implemented enhancements in the S3 and Kubernetes integrations, and refined documentation across multiple areas of the project. The contributions showcase their expertise in back-end development, security best practices and devops configuration.
monitorpythonschedulerapacheprogrammatically
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