Joshua Harlow
Software Architect at Waymo
Kentucky, United States
Summary
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RockstarJoshua Harlow is a Software Architect with 14 years of hands-on experience designing and implementing reliable backend systems, particularly in Python and cloud-init driven infrastructure. He combines deep engineering craftsmanship—evident from stability and retry improvements to kazoo and architectural refactors in tenacity—with practical DevOps sensibilities, adding fallback data sources and robust config handling for cloud-init. Based in Kentucky, he prefers leading by coding and focuses on making distributed systems more resilient and maintainable rather than writing about it. Outside work he’s an avid mountain biker and rock climber, traits that mirror his pragmatic, endurance-oriented approach to solving complex engineering problems.
15 years of coding experience
Github Skills (15)
zoo10
retrying10
system-administration10
configuration-management10
error-handling10
apache-zookeeper10
zookeeper10
python10
cloud-init10
devops10
futures10
testing10
open-source9
security8
networking8
Programming languages (10)
Github contributions (5)
python-zk/kazoo
Feb 2015 - Mar 2017
Kazoo is a high-level Python library that makes it easier to use Apache Zookeeper.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:24 commits, 69 PRs, 23 pushes in 2 years 1 month
Contributions summary:Joshua focused on improving the stability and reliability of the `kazoo` library, specifically concerning its interaction with Apache ZooKeeper. They implemented retry mechanisms for the `server_version` function to handle potential flakiness in responses. The user also updated the changelog and ensured proper exception handling, enhancing the robustness of the library. Additionally, the user updated the ZooKeeper version used for testing in the `ensure-zookeeper-env.sh` file.
apache-zookeeperkazoopythonzookeeperzookeeper-client
canonical/cloud-init
Jan 2015 - Dec 2017
Official upstream for the cloud-init: cloud instance initialization
Role in this project:Back-end & DevOps Engineer
Back-end & DevOps EngineerContributions:46 comments in 2 years 11 months
Contributions summary:Joshua primarily focused on enhancing the cloud-init project by adding new features and fixing existing issues. Their contributions involved adding a fallback data source for disconnected environments, fixing exception handling in URL retrieval, and refactoring and enhancing configuration management. The user demonstrated a strong understanding of system configuration, dependency management, and core project components by making modifications to both application logic and configuration files.
cloud-initpython
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