Sean Purser-Haskell

Sean Purser-Haskell

Software Developer: iOS, Android, OpenGL [ES], Computer Vision

Manchester, United States



What's the difference?

I have worked with C++ and OpenGL for over 10 years, with 5+ years of
professional experience. Lately I have been specializing in iOS, with several apps & games either currently in the app store or awaiting release, both for clients and as internal projects. I specialize in relatively low-level C/C++
development, with strong experience in areas such as: - Raster Graphics
(OpenGL, OpenGL ES on iPhone, iPod Touch, iPad, Android): Order independent transparency, dynamic lighting, shadows, level of


Sean Purser-Haskell has added 12 portfolio pieces. Create an account to review them.

Work History & Feedback

iOS Image Processing App

“Sean did a great job helping us with a tight deadline. We look forward to working with him again.”
8 hrs @ $66.67/hr
Earned $545

OpenGL ES conversion for Jigsawed

“Sean did an exemplary job completing a significant round of updates to our iPhone application, Jigsawed. He was able to keep up with a continually evolving set of tasks, and took ownership of the code as if it were a product of his own (specifically, finding & quickly fixing bugs he noticed in unrelated areas of the application, and that had existed since long before the assignment). This level of initiative improved the quality of the product beyond the mere addition of new features.When changing circumstances moved the deadline forward several weeks, he still managed to complete the assigned deliverables with no decrease in quality.His technical skill and ability to research new tech & solutions independently were all excellent. We will be hiring him again in the future for more updates.”
74 hrs @ $44.44/hr
Earned $3,296

Mac Develper on OpenCL based Genetic Algorithm Financial Analysis System

“Sean completed some great work on an early phase of our project. I will be considering hiring Sean again for work in later stages. Closing this off now to get feedback to Sean.”
19 hrs @ $27.78/hr
Earned $528

feature improvements to iPad OpenGL app

No feedback given
75 hrs @ $33.33/hr
Earned $2,861
Tests Taken
Name Percentile Score

Java Test


OpenGL Programming Test


Programming with C++ Test


U.S. English Basic Skills Test


U.S. Word Usage Test