Stephen Celis
Software Engineering Consultant at stephencel.is
New York, New York, United States
Summary
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Rockstar🎓
Top SchoolStephen Celis is a seasoned software engineering consultant with 18 years of experience specializing in iOS and web development, interface design, and building scalable, fault-tolerant systems. Based in New York, he combines hands-on app engineering with a strong open-source footprint, contributing to well-known Swift projects at Point-Free and libraries like SQLite.swift and snapshot-testing. He has led engineering efforts at startups and established teams (Kickstarter, Handshake, Recurly), often improving testability, CI, and developer ergonomics through thoughtful refactors and automation. Stephen’s work spans full-stack concerns—from payment and subscription backends to SwiftUI front-ends and Combine schedulers—reflecting a pragmatic fluency in both UX and systems. Notably, he frequently modernizes projects for new Swift features (async/await, Swift 5) and adds subtle improvements like navigation and dependency-testing utilities that reduce developer friction. His BA in English underpins a clear, user-focused approach to design and documentation alongside deep technical craft.
18 years of coding experience
8 years of employment as a software developer
B.A., English, B.A., English at Northwestern University
Stackoverflow
4,954reputation
413kreached
40answers
0questions
ruby-on-rails
top-5%
timestamp
top-5%
logging
top-5%
swift
top-5%
activerecord
top-5%
sqlite
top-5%
Github Skills (94)
dependency-management10
apim10
benchmark10
testing10
parser-combinators10
command-line-interface10
navigationbar10
query-building10
navigation-drawer10
ruby10
reactivecocoa10
uikit10
snapshot-testing10
diff310
swiftui10
Programming languages (28)
Github contributions (5)
stephencelis/ghi
Apr 2009 - Mar 2022
GitHub Issues on the command line. Use your $EDITOR, not your browser.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 review, 339 commits, 19 PRs in 13 years
Contributions summary:Stephen primarily focused on enhancing the command-line interface for the `ghi` repository, implementing options for user and repository configuration. Their contributions included adding a search feature and refactoring code for more flexible argument parsing. Additionally, the user improved error handling and added functionality for fetching issue URLs, reflecting a focus on improving the utility and user experience of the tool.
command-linebrowsercli
pointfreeco/episode-code-samples
Jan 2018 - Jan 2023
💾 Point-Free episode code.
Role in this project:Front-end Developer
Front-end DeveloperContributions:1 review, 347 commits, 16 PRs in 5 years
Contributions summary:Stephen's commits primarily involve developing and implementing user interface components. They worked on creating SwiftUI views by defining properties for the visual state. The code also highlights the use of navigation, including sheet and alert presentation, and demonstrates the use of UI-related tools and approaches to enable better user experience.
reactjavascriptpoint-freepointepisode
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