Josh Holbrook
Staff Site Reliability Engineer at Modern Health
Wasilla, Alaska, United States
Summary
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Rockstar🎓
Top SchoolJosh Holbrook is a Staff Site Reliability Engineer with 17 years of full-stack experience across PaaS/SaaS, digital media, adtech and data platforms, currently focused on reliability engineering at Modern Health. He codes fluently in Rust, Python and TypeScript and has a long history of shipping infrastructure and tooling—everything from ETL frameworks and OpenTelemetry integrations to Kubernetes deployments and SLO-driven operational platforms. Josh is an expert in Service Level Objectives and has a particular interest in applying SLO concepts to data systems and legacy modernization, incrementally making systems observable, reliable and malleable. A prolific open-source contributor, his notable projects include the Ecstatic static file server and pyee (Python EventEmitter), and he’s contributed fixes to widely used Node projects like winston and node-http-proxy. Raised in Alaska with an MS in Mechanical Engineering, he blends hands-on coding with technical leadership—mentoring, driving cross-functional consensus, and influencing strategy without dictating. Unusually for an SRE, he’s currently enjoying building a shell-oriented BASIC interpreter as a side project, reflecting a long-standing curiosity about language runtimes and tooling.
17 years of coding experience
9 years of employment as a software developer
Master of Science (MS), Mechanical Engineering, Master of Science (MS), Mechanical Engineering at University of Alaska Fairbanks
Stackoverflow
1,612reputation
145kreached
21answers
5questions
mysql
top-5%
asynchronous
top-5%
Github Skills (32)
url-routing10
filesystem10
javascript10
testing10
command-line-interface10
http10
proxy10
file-operations10
http-proxy10
fileio10
command-line10
logging10
nodejs10
file-server10
server10
Programming languages (18)
Github contributions (5)
jfhbrook/node-ecstatic
Nov 2011 - Apr 2020
A static file server middleware that works with core http, express or on the CLI!
Role in this project:
Back-end Developer
Back-end DeveloperContributions:2 releases, 426 commits, 81 PRs in 8 years 5 months
Contributions summary:Josh contributed to the development of a static file server middleware. Their work involved implementing caching mechanisms to improve performance, and refactoring the code into smaller, more manageable files. They also added support for handling HTTP methods, including GET and HEAD, and incorporated directory listing functionalities. Further contributions include refactoring code and implementing handling for HTTP errors.
clifile-servermiddleware
flatiron/prompt
Aug 2011 - Oct 2012
a beautiful command-line prompt for node.js
Role in this project:Back-end Developer
Back-end DeveloperContributions:35 commits in 1 year 2 months
Contributions summary:Josh primarily focused on refactoring and improving the `prompt` library. Their contributions included removing debugging statements, fixing interactive prompt tests, and implementing features to handle different prompt scenarios, such as those with nested properties. The user also refactored the code to use `revalidator` internally for validation purposes, demonstrating a focus on code quality and maintainability. These changes aimed to enhance the library's functionality and improve user experience.
command-linenodejs
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