Jeffrey Manian
Cofounder & Engineer at Mobile Steam Unit
New York, New York, United States
Summary
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Rockstar🎓
Top SchoolJeffrey Manian is a founder-engineer with 11 years of experience building consumer and backend systems from startups to large platforms. As Cofounder & Engineer at Donut and Chief Engineer at Mobile Steam Unit, he combines product-driven engineering with hands-on ownership across backend, iOS, and frontend stacks. Earlier roles at Cover and eBay sharpened his skills in end-to-end development and recommendation algorithms. He contributes to notable open-source Ruby tooling—improving resilience and rate-limit handling in the widely used slack-ruby-client—demonstrating attention to reliability and API compatibility. Trained as a mechanical engineer at Brown and Stanford, he brings a systems-oriented mindset to software problems and a tendency to tackle both infrastructure and user-facing challenges.
11 years of coding experience
4 years of employment as a software developer
Sc.B. Mechanical Engineering, Sc.B. Mechanical Engineering at Brown UniversityM.S. Mechanical Engineering, M.S. Mechanical Engineering at Stanford University
Stackoverflow
81reputation
5kreached
2answers
1question
Github Skills (10)
apim10
rate-limiting10
slack-api10
api10
slack10
pagination10
ruby10
version-control9
rspec6
ruby-on-rails6
Programming languages (7)
Github contributions (5)
slack-ruby/slack-ruby-client
Sep 2017 - Jun 2021
A Ruby and command-line client for the Slack Web, Real Time Messaging and Event APIs.
Role in this project:
Back-end Developer
Back-end DeveloperContributions:5 reviews, 9 commits, 15 PRs in 3 years 9 months
Contributions summary:Jeffrey's primary contribution focused on improving the resilience and efficiency of the Slack client library. They addressed rate limiting issues in the pagination logic, ensuring the client respects API constraints. The user updated the library to incorporate the latest changes from the Slack API, including new methods for conversations and users. Further refinements included updating the version and preparing the client for release.
slackbotslack-botrubyslackslackapi
jmanian/nba-playoff-pool
Mar 2021 - Mar 2025
Contributions:12 reviews, 119 PRs, 151 pushes in 4 years 1 month
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