Siri Speech Frameworks Engineer
Current
Apple
Dec 2017 - Present
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Derek Ledbetter Email & Phone Number
Siri Speech Frameworks Engineer at Apple
at
Apple
1 work email found
@apple.com
LinkedIn matched
✓ Verified May 2026
4 data sources
Profile completeness 100%
Current company
Apple
Role
Siri Speech Frameworks Engineer at Apple
Location
San Francisco, California, United States
Who is Derek Ledbetter? Overview
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Derek Ledbetter is listed as Siri Speech Frameworks Engineer at Apple at Apple, based in San Francisco, California, United States. AeroLeads shows a work email signal at apple.com and a matched LinkedIn profile for Derek Ledbetter.
Derek Ledbetter previously worked as Siri Speech Frameworks Engineer at Apple and Senior Software Engineer at Kloog Inc.. Derek Ledbetter holds M.S., Mathematics from University Of Florida.
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Email format at Apple
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{first_initial}{last}@apple.com
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Profile bio
About Derek Ledbetter
My expertise is writing applications for Macintosh, Windows, smart phones and other devices. I write solid, easy-to-read code, and I can track down bugs in large code bases.Specialties: C++, C, Python, Swift, Objective-C, iOS, Android, Macintosh, embedded Linux, OpenGL
Listed skills include Android, Linux, Software Development, Python, and 18 others.
Current workplace
Derek Ledbetter's current company
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Apple
8 roles
Derek Ledbetter work experience
A career timeline built from the work history available for this profile.
Senior Software Engineer
Developed an iPhone app that uses Bluetooth LE to read fitness and environmental data from the prototype device. Displays the current data, along with graphs of the most recent values. Presents fitness data from HealthKit in bar and line charts. Wrote a custom library for various kinds of charts. Written entirely with the Swift language.Ported heart rate.
Sep 2015 - Dec 2016
Senior Software Engineer
Samsung Telecommunications America
Developed Android applications. Used native code to integrate the libwebp image compression library. Investigated the public API for Facebook, Instagram and other services. Implemented the client side of a REST API. Implemented a ContentProvider using SQLite.
Mar 2012 - Dec 2014
Senior Graphics Software Engineer
- Developed a graphics framework for displaying HTML 5 pages with features such as animation and 3D transforms. It uses a client/server architecture and is written in C++. Designed to run on ARM-based Linux systems.My.
- Improved the performance of the server by eliminating busy-waiting in the IPC code.
- Simplified the graphics routines by sharing as much code as possible between the OpenGL 2 and the OpenGL ES 2 implementations.
- Created a method for collecting changes to pages into batches, to prevent graphical glitches.Assisted in adding the proposed WebCL standard to the Chrome browser.
Jan 2011 - Nov 2011
Senior Software Engineer
- Developing an OpenGL-based project for Android.Previously, I developed the ACCESS Linux Platform for cell phones and other portable devices.
- Diagnosed and fixed bugs in middleware, applications and drivers.
- Investigated and fixed performance issues, especially in graphics, web browser plug-ins, video playback, and databases.
- Developed user-interface widgets using OpenGL.
Dec 2008 - Jan 2011
Senior Software Engineer
Palmsource
PalmSource is the original name of the Sunnyvale division of Access.
Dec 2008 - Jan 2011
Independent Contractor
Self-Employed
- My clients were:
- TDT/Viisage: Developed software for Windows-based workstations, used by the U.S. Government
- Abracadata: Developed Premier Architect, a home designing program for the Macintosh
- HIJK: Updated PrintQuick. their browser plug-in, so that it would run under Mac OS X
Feb 2002 - Aug 2003
Software Engineer
Shadetree, Inc.
- ShadeTree did custom outsourced software development, on Macintosh, Windows, and other platforms. These were some of our clients and projects:
- Autolycus: SpinImage, Windows versionThis used a turntable and a video camera to create QuickTime VR movies of small objects.
- NuCore: digital camera firmwareWrote a module to convert a sequence of JPEGs to a movie file in QuickTime format.
- Abracadata: Premier ArchitectA home designing program for the Macintosh.
- National Career Information System: Career TrekAn educational game used in elementary schools. Ported from Windows to Macintosh.
- HIJK: PrintQuick browser plug-in, Mac OS 9 versionFor customizing and printing greeting cards and other documents using a web browser.
Aug 1999 - Jan 2002
2 education records
Derek Ledbetter education
M.S., Mathematics
B.A., Mathematics
FAQ
Frequently asked questions about Derek Ledbetter
Quick answers generated from the profile data available on this page.
What company does Derek Ledbetter work for?
Derek Ledbetter works for Apple.
What is Derek Ledbetter's role at Apple?
Derek Ledbetter is listed as Siri Speech Frameworks Engineer at Apple at Apple.
What is Derek Ledbetter's email address?
AeroLeads has found 1 work email signal at @apple.com for Derek Ledbetter at Apple.
Where is Derek Ledbetter based?
Derek Ledbetter is based in San Francisco, California, United States while working with Apple.
What companies has Derek Ledbetter worked for?
Derek Ledbetter has worked for Apple, Kloog Inc., Samsung Telecommunications America, Motorola, and Access.
How can I contact Derek Ledbetter?
You can use AeroLeads to view verified contact signals for Derek Ledbetter at Apple, including work email, phone, and LinkedIn data when available.
What schools did Derek Ledbetter attend?
Derek Ledbetter holds M.S., Mathematics from University Of Florida.
What skills is Derek Ledbetter known for?
Derek Ledbetter is listed with skills including Android, Linux, Software Development, Python, C++, Objective C, C, and Mobile Devices.
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