David Lum
Staff Software Developer at ServiceNow
Montreal, Quebec, Canada
Summary
👤
Senior🎓
Top SchoolDavid Lum is a Staff Software Developer with nine years of experience building cloud-native data and platform systems, currently at ServiceNow after Lightstep's acquisition. He specializes in Kubernetes-first deployments, distributed systems, and high-performance databases, having contributed to Apache Airflow’s Kubernetes integration and refactored critical K8s APIs and Vault integrations. His background spans startups and large enterprises—replatforming logging databases, migrating Hadoop to cloud EMR, and shipping ETL and ML-serving pipelines across AWS and GCP. A former musician with a music theory degree, he brings an engineer’s rigor and a composer’s attention to structure, favoring maintainable refactors and thorough test coverage.
9 years of coding experience
7 years of employment as a software developer
Bachelor's degree Music Theory and Composition, Bachelor's degree Music Theory and Composition at Université de MontréalGraduate Diploma Computer Science, Graduate Diploma Computer Science at Concordia University
Github Skills (15)
kubernetes10
workflow-engine10
orchestration10
orchestra10
devops10
python10
airflow10
kubernetes-pods10
hashicorp-vault10
dockers9
testing9
yaml9
docker9
data-engineering8
cicd8
Programming languages (9)
Github contributions (5)
apache/airflow
Oct 2018 - Aug 2021
Apache Airflow - A platform to programmatically author, schedule, and monitor workflows
Role in this project:
Backend & DevOps Engineer
Backend & DevOps EngineerContributions:8 reviews, 17 PRs, 75 comments in 2 years 10 months
Contributions summary:David primarily contributed to refactoring the Kubernetes (K8S) codebase, focusing on integrating Kubernetes API models and enhancing the worker configuration. They were also involved in setting up and configuring the connection parameters from Vault and invalidated Vault cached properties when not authenticated. Their work included refactoring and adding tests, demonstrating a focus on improving the maintainability and stability of the project.
airflowapache-airflowapachepythonscheduler
davlum/poetson
Jul 2017 - Feb 2019
Contributions:4 PRs, 136 pushes, 19 branches in 1 year 6 months
recordingsarchiveaudio
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