Dennis Leon
Founding Engineer at Citro
Sydney, New South Wales, Australia
Summary
🤩
Rockstar🎓
Top SchoolDennis Leon is a Founding Engineer based in Sydney with 11 years of experience building scalable, cloud-native platforms and developer tools. He combines deep backend and DevOps expertise—particularly with Kubernetes, Golang, CI/CD and distributed systems—with a track record of improving resilience and automation in production-grade projects. Dennis has contributed to prominent open-source Cloud Foundry and Carvel projects, enhancing networking, CLI reliability, and test infrastructure while adding integration tests and CI improvements. He moves comfortably between low-level orchestration concerns (scheduling, stemcell/director workflows) and higher-level platform features like multi-tenancy and security. Colleagues rely on him for pragmatic refactors and mentoring, and he brings an operator’s mindset to developer experience work. An often-overlooked strength is his sustained focus on testability and build reliability, evidenced by repeated contributions to CI, linter tooling, and acceptance tests.
11 years of coding experience
14 years of employment as a software developer
Bachelor of Science in Information Technology, Software Engineering, Bachelor of Science in Information Technology, Software Engineering at University of Technology, Sydney
English, Spanish
Github Skills (44)
bosh10
docker10
cloud-foundry10
apidoc10
scripting10
testing10
oid10
bash10
web-deploy10
go-testing10
dockers10
java10
javas10
cl10
automation10
Programming languages (8)
Github contributions (5)
cloudfoundry/bosh-cli
Oct 2016 - May 2017
BOSH CLI v2+
Role in this project:
DevOps Engineer
DevOps EngineerContributions:36 commits, 1 PR, 36 pushes in 7 months
Contributions summary:Dennis primarily focused on enhancing the BOSH CLI v2+ project's CI/CD infrastructure by upgrading dependencies, integrating new docker images, and improving the build process. They upgraded Ruby and Vagrant AWS Plugin in the Docker image, and implemented the usage of new bosh/cli docker image and concourse resource_type primitive. They also added a new flag for parallel downloads and made some improvements to the DownloadBlobs functionality.
boshcloud-foundrycloudfoundrypcfbosh-cli
cloudfoundry/uaa
Jan 2018 - Mar 2019
CloudFoundry User Account and Authentication (UAA) Server
Role in this project:Back-end Developer
Back-end DeveloperContributions:380 commits, 21 PRs, 275 pushes in 1 year 2 months
Contributions summary:Dennis primarily contributed to the CloudFoundry User Account and Authentication (UAA) Server, focusing on the introspection endpoint documentation and related test infrastructure. Their work included adding documentation for the endpoint and creating mock test files. Additionally, the user refactored the UaaTokenEndpoint for improved error handling and also contributed to general project maintenance by merging new feature branches.
openid-connectuaaoidcaccountauthentication
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.