Justin Peckner
Software Engineering Manager at GreenFi
Los Angeles, California, United States
Summary
👤
Senior🎓
Top SchoolJustin Peckner is a software engineering manager with 10 years of experience leading iOS teams and shipping consumer apps and SDKs, including as a founding engineer on Helix’s iOS App and SDK. He blends deep Swift/Objective-C expertise and modern UI work (SwiftUI, UIKit, Core Animation) with backend and full-stack chops in Golang, Java, PostgreSQL, and ReactJS, enabling him to own features end-to-end. A pragmatic engineering leader, he has reduced crash rates, introduced OAuth and Sign in with Apple integrations, and built a Golang/Postgres push-notification system while managing distributed teams. Based in Los Angeles, he’s equally comfortable improving CI/CD and release automation (Fastlane, App Center) as mentoring engineers and driving product-quality practices like thorough testing. Outside work he spent a sabbatical building open-source iOS projects and photographing national parks, reflecting a creative, hands-on approach to learning and problem solving.
10 years of coding experience
12 years of employment as a software developer
Masters Degree Computer Science, Masters Degree Computer Science at California State University, NorthridgeBachelor of Music Education Music Education, Bachelor of Music Education Music Education at Indiana University Bloomington
Stackoverflow
3,896reputation
418kreached
226answers
1question
java
top-5%
Github Skills (81)
code-generation10
loading-animation10
tuner10
rxswift10
codegen10
placeholder10
midi10
observer10
audio10
swift10
skeleton10
music10
uicollectionview10
audiokit10
meta10
Programming languages (3)
Github contributions (5)
jpeckner/SwiftDux
Jun 2019 - Feb 2023
SwiftDux is a straightforward, thread-safe implementation of Redux in Swift
Contributions:7 releases, 2 PRs, 62 pushes in 3 years 8 months
threadswiftreduxiossafe
jpeckner/Shared
Jun 2019 - Jan 2022
Swift iOS framework containing code for networking, location services, UI, and more
Contributions:3 releases, 103 commits, 6 PRs in 2 years 7 months
cocoapodsios-frameworknetworkinglocationswift
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