Stephen Lottermoser
Software Engineering Manager at Apple
Cupertino, California, United States
Summary
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Senior🎓
Top SchoolStephen Lottermoser is a software engineering manager with 14 years at Apple, currently leading Messages engineering from Cupertino. He combines deep, hands-on expertise in Objective-C, Swift, UIKit/AppKit and Mac Catalyst with product leadership across flagship features like iMessage apps, Memoji, Shared with You and the Mac Catalyst Messages app. Stephen has driven cross-platform integrations—Siri, Business Chat, watchOS messaging and keyboard sticker integrations—moving prototypes into shipped system-level experiences. He’s known for mentoring engineers, presenting to senior executives, and architecting user-facing frameworks such as the Messages framework for third-party iMessage apps. His background spans retail systems, large-scale mobile apps, and early HBase/Hadoop work, reflecting both backend and UI fluency. Based in Cupertino, he blends deep platform knowledge with a knack for turning experimental interactions into polished, broadly used features.
14 years of coding experience
11 years of employment as a software developer
B.S., Computer Science, B.S., Computer Science at Brigham Young University
English, Japanese
Stackoverflow
154reputation
21kreached
5answers
0questions
Github Skills (25)
reporter10
rails8
gitlab8
ruby8
gitlab-api7
linux7
homebrew7
swift7
macos6
nsarray6
sorting6
nsdate6
google-wave6
cocoa6
objective-c6
Programming languages (2)
Github contributions (5)
slottermoser/Commander
May 2016 - May 2016
Contributions:2 pushes, 2 tags in 1 day
composeswiftinterfacescommand-linemacos
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