Lionel Barrow
VP Engineering at Carefeed
Chicago, Illinois, United States
Summary
🤩
Rockstar🎓
Top SchoolLionel Barrow is a senior engineering leader with 13 years of hands-on software and management experience, currently serving as VP Engineering in Chicago and lecturing on Cloud Computing and Software Testing at the University of Chicago. He scaled Tegus from a single engineer to a ~120-person technology organization, launched an API product that reached >$2M in six months, and helped build a business that exited for $930M. A pragmatic back-end developer by training, Lionel has contributed to notable Go projects—improving graceful shutdowns in the braintree/manners HTTP server and advancing the braintree-go client with core payment features and test coverage. He blends product-minded engineering, operational rigor (managing a ~$20M budget), and deep technical craft, often stepping into code to solve critical problems. Collected academic foundations in computer science and mathematics complement his knack for clear technical writing and practical tooling.
13 years of coding experience
13 years of employment as a software developer
Bachelor of Arts (BA), Mathematics, Bachelor of Arts (BA), Mathematics at Bard CollegeMaster of Science (MSc), Computer Science, Master of Science (MSc), Computer Science at University of Chicago
Stackoverflow
150reputation
10kreached
3answers
3questions
Github Skills (18)
apidoc10
testing10
http10
go10
api10
braintree10
concurrency10
go-testing9
xml8
mux7
async-socket6
optimization6
complexity-theory6
python6
django6
Programming languages (7)
Github contributions (5)
braintree/manners
Jan 2013 - Apr 2016
A polite Go HTTP server that shuts down gracefully.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:54 commits, 9 PRs, 12 pushes in 3 years 3 months
Contributions summary:Lionel focused on refactoring the `manners` Go HTTP server, improving its graceful shutdown capabilities. They modified the core HTTP server logic, including the listener and connection handling, to allow for in-flight requests to complete before shutting down. The user also added example code illustrating the use of `manners` with the `gorilla/mux` router, extending the server's flexibility. Furthermore, they fixed bugs related to the server's listening methods.
go-http
braintree-go/braintree-go
May 2013 - Mar 2017
A Go client library for Braintree
Role in this project:Back-end Developer
Back-end DeveloperContributions:124 commits, 33 PRs, 34 pushes in 3 years 11 months
Contributions summary:Lionel primarily contributed to the development of the Braintree Go client library. The commits demonstrate the implementation of core features such as creating credit card and transaction requests. They refactored and updated existing code, and integrated unit tests to ensure functionality. Furthermore, the user worked on integrating tests, and setting up the base framework to interact with Braintree.
braintreego
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