Ryan Hollis
Software Developer at Square
Atlanta, Georgia, United States
Summary
🤩
Rockstar🎓
Top SchoolRyan Hollis is a Software Developer based in Atlanta with 11 years of experience building reliable back-end systems, currently contributing at Square. A Georgia Tech Computer Science graduate, he previously developed applications at the Georgia Tech Research Institute and brings strong production engineering chops. He’s an active open-source contributor—most notably enhancing the tealeg/xlsx Go library with stream writing, partial reads, improved number handling, and better test coverage to enable efficient handling of large Excel files. Known for pragmatic refactors and performance-focused fixes, he blends deep attention to correctness with practical improvements that help teams process real-world data at scale.
11 years of coding experience
2 years of employment as a software developer
Bachelor of Science (BS), Computer Science, Bachelor of Science (BS), Computer Science at Georgia TechHighschool Diploma, Highschool Diploma at Tupelo High School
Github Skills (8)
file-handling10
file-processing10
spreadsheet10
go10
file-access10
fileio10
excel9
testing8
Programming languages (6)
Github contributions (5)
tealeg/xlsx
Sep 2017 - Dec 2022
Go library for reading and writing XLSX files.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:1 release, 2 reviews, 119 commits in 5 years 3 months
Contributions summary:Ryan contributed significant enhancements to the `xlsx` library, focusing on improving the core functionality of reading and writing XLSX files. Key contributions include the addition of stream writing capabilities, allowing for more efficient handling of large files. Furthermore, the user implemented features allowing partial reads, and improved number handling, thus increasing performance and fixing potential bugs. The user also refactored and improved the test coverage within the library.
golanggolang-libraryxlsxxlsx-filesgo
ryho/slack-emoji-bot
Feb 2022 - Jan 2023
This Slack bot will post the newly created custom Slack emojis to the channel of your choice.
Contributions:1 review, 23 commits, 24 PRs in 11 months
botslack-botslackemojisunicode
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