Samuel Langenfeld
Software Engineer at Sourgum
Falls Church, Virginia, United States
Summary
👤
SeniorSamuel Langenfeld is a full-stack JavaScript engineer with nine years of experience and five focused on React and Next.js, currently building at Sourgum and mentoring aspiring developers at Thinkful. He has driven measurable impact—improving site performance by 35% at Remedy Health Media and boosting lead-generation revenue by 70% at U.S. News—by combining SSR, modern bundling strategies, and accessibility-first front ends. Comfortable across TypeScript, Node, Django, GraphQL and multiple databases, he bridges front-end polish with back-end reliability and automated CI/CD pipelines. An active contributor to community projects, he’s improved UI/UX and backend robustness in a Rails case-management repo supporting abortion funds, showing a commitment to meaningful, user-centered work. When not shipping features he’s likely training clients or puppies—bringing discipline and empathy to team culture.
9 years of coding experience
5 years of employment as a software developer
Github Skills (12)
rails10
user-interface10
front-end-development10
ruby-on-rails10
erb10
model-view-controller9
html9
css9
javascript8
git-repository8
git8
github8
Programming languages (4)
Github contributions (5)
DARIAEngineering/dcaf_case_management
Apr 2017 - Sep 2017
Rails-based case management system for abortion funds
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:11 commits, 7 PRs, 13 comments in 5 months
Contributions summary:Samuel primarily focused on front-end and UI improvements, styling the clinics index page with accordion collapse functionality. They refactored and updated the pledge modal by separating cancel and submit functionalities, and styled the button components. Additionally, the user modified patient fulfillment forms by preventing form auto-completion. They also addressed back-end concerns by removing a duplicate line in the exportable.rb file and modifying the flash notice to give a timestamp.
ruby-on-railsmanagement-systemrailsrubyabortion
SamuelLangenfeld/Resume
Feb 2017 - Mar 2024
Contributions:86 pushes, 3 branches in 7 years 1 month
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