Gregory R. Parker

19835 Skyline Blvd
Los Gatos, CA 95033

email:    gparker-resume2@sealiesoftware.com
web:      https://www.sealiesoftware.com/
twitter:  @gparker
mastodon: @gparker@discuss.systems

EDUCATION

  9-1997 - 6-2001
	Stanford University, Stanford, CA
	Received BS in Computer Science, June 2001

  9-1994 - 6-1997
	Los Gatos High School, Los Gatos, CA
	Received high school diploma, June 1997


EXPERIENCE

Work for hire:
  Summer 2001-Winter 2018: Software Engineer, Apple Computer, Inc.
	(2001-2018) Maintained and improved the Objective-C runtime on 
	  all of Apple's platforms, including speed and memory improvements 
	  and support for new language features and new CPU architectures.
        (2012-2018) Assisted in design and implementation of the Swift
          language and runtime, including memory management of objects,
          integration with Objective-C, bringup on new platforms like iOS,
          and extension of the test infrastructure inherited from LLVM.
	(2001-2003) Assisted in development of the Mac OS X version of 
	  the Java Virtual Machine, including porting and implementation 
          of low-level class libraries and implementation and debugging 
          of PowerPC code generation.

  Winter 1999-Spring 2001: CS106 Section Leader, Stanford University.
	Section leader for first-year programming courses. 
	Responsibilities included teaching a one-hour weekly section 
	with about 10 students, grading assignments, and discussing 
	each assignment with each student individually. The course 
	emphasized good programming style as well as code correctness.

  Summer 2000: Software Intern, Handspring, Inc.
	Developed Handspring Photo Album application for Mac OS and 
	Windows to convert images into Palm OS format for viewing on 
	the Visor Prism. Worked on a Palm OS pinball game.

  Summer 1999: CS106 Section Leader, Stanford University.

  Summer 1998: Software Intern, Optical Networks, Inc.
	Part of a team writing control and routing software for high-
	speed optical networking hardware. Set up and administered 
	the QNX OS as the development and operation environment and 
	wrote development tools and utility code.

  Summer 1997: Software Intern, Optivision, Inc. 
	Maintained and improved low-level control software for high-
	speed optical networking hardware. 


Selected academic and personal projects:

  Valgrind for Mac OS X (2004-2010)
	A dynamic instrumentation and analysis tool. The initial 
	port to Mac OS X from Linux was a 30,000 line patch.
	http://valgrind.org/
	http://sealiesoftware.com/valgrind/

  pssh: SSH 2 for Palm OS (2003-2008)
	A full-featured SSH 2 client for Palm OS 5.
	http://www.sealiesoftware.com/pssh/

  Peal: Palm ELF ARM Loader (2003-2005)
	A postlinker and dynamic loader for ARM code on Palm OS 5 
	that provides support for global data and large code segments.
	http://www.sealiesoftware.com/peal/

  XFree86 (now X.Org) for Mac OS X (2001-2004)
	Implemented full-screen mode with CoreGraphics
        and rootless mode with Cocoa and Carbon. 
	http://www.sourceforge.net/projects/xonx/

  "Spinball" (Alexei Kosut and Greg Parker, 2000) 
	3D pinball game in OpenGL. Top 8 finalist of 70 games.

  "Aigo" (Alexei Kosut, Dan Coleman, and Greg Parker, 1999)
	Othello-playing program trained with reinforcement learning. 
	Won class tournament.


SKILLS

	Languages: C/C++/ObjC primarily; also familiar with Perl,
          Python, Java, Swift, Rust
	CPUs: ARM (32- and 64-bit), x86, x86-64, PowerPC
	Platforms: familiar with Linux and Windows as a user;
	  macOS and iOS as a developer