Patrick Niemeyer
expander
pat@work:/home/pat  
desk
Author of the Best-Selling Book Series, <em>Learning Java O'Reilly & Associates</em>
Learning Java, the first book in the O'Reilly Java series is one of the top-selling Java books in the industry. Available worldwide in nine languages and used as the text for many University Java courses. Winner of a 2001 Reader's Choice award. Source code for the book examples is available on GitHub.
Creator of Apache BeanShell
Developed the BeanShell Java Scripting Language. BeanShell is a Java syntax compatible scripting language used for scripting extension, configuration, and testing as well as teaching and educational purposes. BeanShell has been used in hundreds of commercial and open source applications ranging from financial rules engines to games.
Orchid Technologies (2019-Present)
Working with Jay Freeman and Steven Waterhouse at Orchid Labs Building a stochastic nanopayment system on Ethereum, supporting a decentralized bandwidth market and cross-platform, mobile and desktop VPN application. Orchid is a fully open source project including the Orchid VPN server, mobile and desktop client apps, and management dApps.
World Health Organization, COVID-19 App
Worked with Dr. Daniel Kraft and Bruno Bowden at the World Health Organization to develop the World Health Organization COVID-19 App during the onset of the pandemic in spring 2020. The app was designed to provide hyper-local and language-localized information. IEEE Article - A 'Waze' for COVID-19
Present Company (2015-2020)
Co-founded Present Company with Bob Lee and Janete Perez. Present was a novel, location-based social network and mobile app with a focus on privacy and womens' networking. The entire codebase is now public on the Github repo along with some photos of the team. Fast Company article, Cheddar TV interview, Brit+Co article
ML Experiments
ML Experiments
Pikazo (2015)
Worked with Karl Stiefvater on his Generative AI, neural style transfer startup: Pikazo. Scaling and performance. Early experiments with temporally consistent neural style transfer for video.
Generating Memoji from Photos
An article with some experiments in using a VGG object recognition network trained on faces to guide Memoji (avatar) design by ranking similarity. Back then we had to use Lua for Torch! :)
Based Blobs - Using Polynomial Commitments in Your Projects with the EIP-4844 KZG Reference Libs
This short article is a developer-level introduction to polynomial commitments in Python using the ckzg library.
RxCacheable: Caching and Optimisitic Transformations for RxSwift
Some thoughts on dealing with eventual consistency in data and async server calls. A small extension for RxSwift.
Swift Utilities
Swift Utilities
SelfieCam
This was an experiment in using the depth information from the iPhone camera to simulate a different lens focal length and perspective distance. The idea was to give the appearance that the photo was taken from farther away with the same field of view (producing a "flatter" image), which might be useful for taking selfies. WebGL shader code.
CTO, Chief Architect, Ikayzo Inc. (2009-2015)
Worked on advanced analytics and trade desk applications for Banc of America Securities, Wells Fargo, and PIMCO financial institutions. Printable resume pdf.
Intellectual Property Consulting
Expert witness source code review, analysis, and testimony in cases involving JPMorgan Chase, Facebook, Google, YouTube, and others. Details in my Printable resume pdf.
Senior Software Architect, Finance (2001-2005)
Senior Software Architect, Finance (2001-2005)
Design and systems implementation for Edward Jones, A.G.Edwards, Federal Reserve Bank of St. Louis. Printable resume pdf.
3D Printing and OpenSCAD Projects
3D Printing and OpenSCAD Projects
FrameUp
A fun, layout design app I made long ago to help you arrange framed photos on your wall. I handed off the rights to someone else so I can't post the source, but I think it was pretty cool and wanted to show it off. Here's a little video of it made with Final Cut and a GarageBand loop.
Spinometer - A Visual Frequency Meter App
A "speedometer" for fidget spinner toys, but more generally this was a neat visual frequency meter. The (messy code never really intended to be public), evaluates live high-framerate video and, in real-time, performs an autocorrelation to estimate frequency and annotate regions. Here is a little video.
Hue Go!
This was a little app that let you control your Philips Hue lights with music and special effects. It involved reverse engineering the Philips Hue protocol and the UPnP bulb discovery mechanism. Philips has a proper API now, so I think this code is obsolete. Sometimes I like to pretend I'm in Star Trek.
ToonVision
A little experiment from the early days of video processing on iOS. It implemented a "skeletonize" effect on real-time video capture. This would be easier now with Metal :)
Spec Lead, Member of Java Community Process Expert Groups
Member of JCP expert groups JSR-274, JSR-223, and JSR-283 which defined new language features and APIs for the Java programming language including the javax.script API, Java Content Repository API, and other scripting language standardization efforts.
Home Automation Stuff
Home Automation Stuff
  • A simple "top" command cli tool for the SPAN.io smart panel.