Tim Penhey
Staff Engineer at Stacklet
New Zealand
Summary
🤩
Rockstar🎓
Top SchoolTim Penhey is a Staff Engineer with 18 years of experience building and leading teams that ship resilient cloud and open-source software. After early work in financial services he spent over a decade at Canonical contributing to Launchpad, Unity and leading the Juju team—moving from hands-on Go development to engineering leadership and product strategy. He combines deep backend engineering (notably refining Juju's error handling and contributing to cloud-custodian) with a talent for creating productive, happy teams and improving CI/CD and maintainability. Now at Stacklet, he focuses on large-scale cloud deployment and governance challenges, bringing practical architecture sense and a knack for pragmatic refactors. Colleagues describe him as a thoughtful mentor who balances long-term stability with incremental technical improvements.
18 years of coding experience
14 years of employment as a software developer
BSc (Hons), Computer Science, BSc (Hons), Computer Science at University of OtagoLogan Park High School
Github Skills (18)
python10
cicd10
rule-engine10
go10
yaml10
error-handling10
engine10
testing9
cloud-computing9
unit-testing9
refactor9
pytest9
aws9
refactoring9
azure8
Programming languages (9)
Github contributions (5)
juju/errors
May 2014 - Feb 2019
Common juju errors and functions to annotate errors. Based on juju/errgo
Role in this project:
Back-end Developer
Back-end DeveloperContributions:39 commits, 3 PRs, 1 push in 4 years 9 months
Contributions summary:Tim primarily contributed to the `errors` package within the repository, focusing on enhancing and refactoring the error handling mechanisms. They introduced new error types and functionalities, modified the `Error()` and `ErrorStack()` methods for improved error string formatting, and ensured compatibility with existing error handling libraries. Furthermore, the user updated the tests to reflect the changes made, demonstrating a focus on code quality and maintainability.
javaannotatejuju
cloud-custodian/cloud-custodian
Aug 2020 - Dec 2022
Rules engine for cloud security, cost optimization, and governance, DSL in yaml for policies to query, filter, and take actions on resources
Role in this project:Backend & DevOps Engineer
Backend & DevOps EngineerContributions:67 reviews, 14 commits, 37 PRs in 2 years 4 months
Contributions summary:Tim primarily focused on improving the project's codebase and ensuring its functionality. Their contributions included fixing test-related issues, resolving documentation errors, and refactoring code for better maintainability. They also updated dependencies, enhanced CI/CD processes, and introduced deprecation handling within the policy YAML structure. These changes indicate a focus on code quality, build processes, and ensuring long-term project stability.
gcpquery-filterserverlesscompliancecloud-security
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