Grant Callaghan
Staff Security Software Engineer at Netflix
Los Gatos, California, United States
Summary
👤
Senior🎓
Top SchoolGrant Callaghan is a Staff Security Software Engineer in Los Gatos with 14 years of experience building secure, cloud-native web applications and developer tooling. He blends front-end craftsmanship with backend systems engineering—shipping SPAs, REST microservices in Go and Python, and identity-focused security features like OIDC/SSO and OAuth2 at scale for Netflix. A pragmatic leader, he drives CI/CD, Kubernetes, Terraform and AWS best practices while mentoring teams to deliver robust, auditable systems. His background includes designing distributed policy enforcement and observable services, and notable open-source work modernizing the WebCola graph-layout project for npm and D3v4 compatibility. Known for turning complex security and UX requirements into reliable production systems, he combines hands-on coding with a strong emphasis on continuous integration and measurable quality.
14 years of coding experience
10 years of employment as a software developer
Lower Division Engineering, Lower Division Engineering at Foothill CollegeBachelors of Science Computer Science, Bachelors of Science Computer Science at San Jose StateUniversity of California, Santa Barbara
Github Skills (5)
javascript10
npm10
d3js10
testing9
build-system9
Programming languages (12)
Github contributions (5)
tgdwyer/WebCola
Dec 2016 - Feb 2017
Javascript constraint-based graph layout
Role in this project:
Front-end Developer
Front-end DeveloperContributions:8 commits, 7 PRs, 6 comments in 2 months
Contributions summary:Grant primarily focused on updating dependencies and examples related to the build and test processes of the webcola project. They also refactored the module layout to improve compatibility with npm and commonjs. Further contributions included fixing d3 dispatch calls and updating tests to ensure they passed with D3v4. Lastly, general example updates for the new version of d3 were completed.
graph-basedjavascriptlayoutgraph-editorconstraint
gcallaghan/dot_vim
Mar 2015 - Mar 2019
Contributions:8 pushes in 4 years
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