Cailyn Sinclair
Senior Software Engineer at Circle
Federal Way, Washington, United States
Summary
👤
Senior🎓
Top SchoolCailyn Sinclair is a Senior Software Engineer with 12 years of hobbyist and professional programming experience building full-stack web applications using Node.js, React, Express, .NET, Java, and Linux. Currently at Circle, she has progressed through multiple engineering roles while shipping features that span backend, frontend, and database schema changes. A committed open-source contributor, she has made substantive contributions to the World Cube Association codebase—adding registration, guest registration, and user management features that support global competition operations. Beyond software, Cailyn channels her technical creativity into the niche hobby of Rubik’s Cube competition organization, serving as the Pacific Northwest regional lead delegate and building tooling around the sport. Known for pragmatic problem solving, she also has a history of automating manual workflows in non-technical roles, turning repetitive tasks into reliable software-driven processes. Based in Federal Way, Washington, she focuses on making people’s lives easier through practical, user-focused engineering.
11 years of coding experience
5 years of employment as a software developer
Bachelor's degree Computer Science, Bachelor's degree Computer Science at Central Washington UniversityAssociate’s Degree DTA, Associate’s Degree DTA at Columbia Basin College
Github Skills (11)
tournament10
rails10
backend10
wcag10
sql10
back-end-development10
ruby-on-rails10
front-end-development9
database-design9
cubing8
rspec8
Programming languages (8)
Github contributions (5)
thewca/worldcubeassociation.org
Feb 2016 - Jan 2023
All of the code that runs on worldcubeassociation.org
Role in this project:
Full-stack Developer
Full-stack DeveloperContributions:67 reviews, 38 commits, 33 PRs in 6 years 11 months
Contributions summary:Cailyn primarily contributed to the application's backend and frontend functionality, implementing features related to user registration and competition management. They modified database schemas, created and updated views, and implemented API endpoints. Key contributions include the addition of a guest registration feature, enabling registration options, and incorporating a user deletion feature.
worldcubeassociationrunscubingspeedcubingwca
coder13/delegateDashboard
Jan 2018 - Dec 2022
The ultimate delegate assistant tool for the planning, running, and post comp analysis
Contributions:204 commits, 14 PRs, 230 pushes in 5 years
assistantautomationcubingdelegateplanning
Find and Hire Top DevelopersWe’ve analyzed the programming source code of over 60 million software developers on GitHub and scored them by 50,000 skills. Sign-up on Prog,AI to search for software developers.