J Connolly
Software Engineer at Mixpanel
San Francisco, California, United States
Summary
🤩
Rockstar🎓
Top SchoolJ Connolly is a San Francisco–based software engineer with 13 years of experience blending product-focused backend engineering and startup founding. Currently at Mixpanel, he contributes to core SDKs—most recently improving the Mixpanel Node.js SDK with TypeScript typings, refactors, and feature implementations that strengthen type safety and reliability. As founder of Lift Hero he turned a personal healthcare insight into a service for seniors, combining clinical empathy (premed background and EMT experience) with product execution. His background ranges from clinical research and trial coordination to intensive full‑stack and UX training, giving him a rare mix of technical rigor, user-centered design, and healthcare domain knowledge. He brings pragmatic engineering discipline to developer tooling and APIs while keeping an eye on real-world impact.
13 years of coding experience
7 years of employment as a software developer
Founder, Founder at Founder InstituteHarvard-Westlake High SchoolEntrepreneurship, Entrepreneurship at Lean LaunchPad for Life Sciences/Healthcare at UCSFUX Design, UX Design at General AssemblyBA, History, premed courses, BA, History, premed courses at Harvard University
Github Skills (7)
typescript10
nodejs10
typescripts10
sdk10
backend10
back-end-development10
typescript-types10
Programming languages (17)
Github contributions (5)
mixpanel/mixpanel-node
Aug 2019 - Sep 2019
A node.js API for mixpanel
Role in this project:
Back-end Developer
Back-end DeveloperContributions:8 commits, 1 PR, 7 comments in 1 month
Contributions summary:J primarily contributed to the backend of the Mixpanel Node.js SDK. Their work included adding TypeScript interfaces for improved type safety, refactoring profile helper functions for better organization, and implementing the `remove` methods for both people and groups. The user also updated existing tests, which involved using `Object.assign`, to ensure the SDK's functionality.
mixpanelnodejs-apinodejssdk
YayC/server-side-training
Oct 2018 - Apr 2019
Basic app for use in the server-side training
Contributions:4 pushes, 1 branch in 5 months
server-sidebasic-apptraining
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