Jesper Christiansen
Independent Consultant at Jesper Labs
San Francisco, California, United States
Summary
👤
Senior🎓
Top SchoolJesper Christiansen is an independent consultant and seasoned software engineer with 14 years of experience and nine years in professional engineering, leadership, and management roles, primarily focused on web products. He combines hands-on backend expertise in Ruby/Rails and Elixir with front-end know-how in Ember, React and Vue to turn high-level ideas into polished, user-centered web apps with minimal oversight. At Zendesk he led security and authentication initiatives—building a high-performance auth service and driving PCI-related solutions—while also managing cross-functional teams and product priorities. Jesper is product-focused with a sharp eye for visual detail and usability, and contributes to open-source payment tools (pay-rails/pay) improving billing, receipts and test coverage. Based in San Francisco and authorized to work in the US, he blends engineering depth with pragmatic product sensibilities to deliver reliable, customer-facing systems.
14 years of coding experience
13 years of employment as a software developer
Technical University of Denmark
Github Skills (16)
ruby-rails10
rails10
payment-processing10
subscribe10
su10
subscriber10
stripe10
ruby10
testing9
schema-design8
database-schema8
db-schema8
database-design8
schema8
braintree7
Programming languages (5)
Github contributions (5)
pay-rails/pay
Dec 2018 - Aug 2019
Payments for Ruby on Rails apps
Role in this project:
Back-end Developer
Back-end DeveloperContributions:29 commits, 15 PRs, 17 comments in 8 months
Contributions summary:Jesper primarily contributed to the backend of the "pay" Rails application, focusing on payment processing and subscription management. Their work included refactoring code, such as using keyword arguments and changing database schema. They implemented new features related to charges, including adding a `receipts` method and integrating email notifications. Additionally, the user addressed multiple bug fixes and added thorough testing.
ruby-on-railspaymentspaystriperails
jespr/pay_features
Dec 2019 - Sep 2022
Contributions:5 PRs, 10 pushes, 3 branches in 2 years 8 months
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