Ross Kaffenberger
Software Engineer Technical Lead at Cisco Meraki
Bethesda, Maryland, United States
Summary
🤩
Rockstar🎓
Top SchoolRoss Kaffenberger is a software engineer and technical lead with 16 years of experience building full-stack web applications and shaping product vision, currently leading engineering at Cisco Meraki. He brings deep Ruby/Rails expertise alongside modern JavaScript frameworks (React, Vue, ES6) and has production experience with Elixir/Phoenix and relational databases. Ross combines hands-on debugging and backend optimizations—evident in contributions to popular projects like rails/webpacker and tooling such as impressionist and refile—with a track record of improving security and test coverage. He mentors teams to ship reliable, maintainable systems and has taught Ruby, Rails, and JavaScript publicly via joyofrails.com. A former science teacher with a BA from Princeton and an MS in Computer Science from NYU, he blends pedagogy with engineering to communicate complex ideas clearly. He’s drawn to solving impactful business problems and frequently contributes pragmatic open-source fixes that improve real-world app behavior.
16 years of coding experience
6 years of employment as a software developer
Master's, Computer Science, Master's, Computer Science at New York UniversityBA, Moleculary Biology, BA, Moleculary Biology at Princeton University
English
Stackoverflow
11,464reputation
573kreached
232answers
1question
ruby
top-5%
testing
top-5%
webpack
top-5%
caching
top-5%
rspec
top-5%
model-view-controller
top-5%
Github Skills (52)
ruby-rails10
caching10
devise10
javascript10
sinon10
redis10
trello-api10
testing10
configuration-management10
pdfjs10
rspec10
rails10
websocket10
logger10
object-oriented-programming10
Programming languages (12)
Github contributions (5)
rossta/vue-pdfjs-demo
May 2018 - Sep 2019
A demo PDF viewer implemented with Vue and PDF.js
Role in this project:
Front-end Developer
Front-end DeveloperContributions:165 commits, 22 PRs, 90 pushes in 1 year 4 months
Contributions summary:Ross primarily focused on building the front-end components for a PDF viewer application. Their contributions included implementing core components like `PDFDocument`, `PDFPage`, `PDFUploader`, and `PDFPreview`, utilizing Vue.js. They also added UI elements for zooming, pagination, and a responsive layout, improving the overall user experience. Furthermore, the user integrated a file uploader for PDF files.
pdfpdfjspdf-viewervueviewer
jeremytregunna/ruby-trello
Jan 2013 - Nov 2015
Implementation of the Trello API for Ruby
Role in this project:Back-end Developer
Back-end DeveloperContributions:46 commits, 3 PRs, 9 comments in 2 years 11 months
Contributions summary:Ross primarily worked on implementing and refining the Trello API implementation for Ruby. Their contributions included adding new features, such as list positions, and improving existing code through refactoring. The user also focused on improving test coverage and fixing incompatibilities with dependencies. They also updated the codebase to use instance variables and the Client class.
apirubytrello-apitrellofaraday
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