Jonathan Mohrbacher
Staff Software Engineer at Wonder
New York, New York, United States
Summary
👤
Senior🎓
Top SchoolJonathan Mohrbacher is a Principal Engineer with 12 years of experience building scalable, event-driven systems using Ruby, C#, Python, JavaScript, SQL, Docker, Kubernetes, gRPC, and Kafka. He blends strong individual-contributor craft—rapidly learning new domains and plugging into any project—with the instincts of a manager, independently scoping work, aligning business and engineering, and mentoring peers. At companies from Namely to Blue Apron and now Wonder, he has driven technical evolution across HR and operations products, introducing testing strategies and integrating microservices for safer delivery. An active contributor to open-source Rails projects like AgileVentures/WebsiteOne, he brings practical front-end and test-environment expertise alongside backend integrations. Based in New York, he’s known for high output, clear cross-functional communication, and a knack for finding where he can add the most value. Unusually for a senior engineer, he pairs sales-adjacent problem solving from earlier field roles with deep systems experience, giving him a pragmatic, product-oriented perspective.
12 years of coding experience
11 years of employment as a software developer
Bachelor of Arts Political Science, Bachelor of Arts Political Science at University of Connecticut
Github Skills (10)
html10
ruby10
rspec10
rails10
capybara10
ruby-on-rails10
erb10
agile9
agile-development9
cucumber8
Programming languages (16)
Github contributions (5)
AgileVentures/WebsiteOne
Jan 2014 - Nov 2014
A website for Agile Ventures
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:51 commits, 2 comments in 9 months
Contributions summary:Jonathan primarily worked on the frontend aspects of the Agile Ventures website. Their contributions included modifying layout files (application.html.erb) to incorporate navigation bars and links, and implementing conditional rendering based on user sign-in status. Additionally, they introduced a "within" helper for more focused element selection in view specifications and modified the project and application view specs. They also focused on setting up the test environment.
herokuventurescodeclimatesemaphore-cicapybara
namely/countries
Jun 2014 - Jul 2017
All sorts of useful information about every country packaged as pretty little country objects. It includes data from ISO 3166 (countries and states/subdivisions ), ISO 4217 (currency), and E.164 (phone numbers). As a bonus it even adds a country_select helper to rails projects.
Contributions:15 commits, 15 PRs, 13 pushes in 3 years
iso-4217phoneisorailsruby
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