I’m a maker and a teacher; I love to build things and share with others. Over the years I've been a consultant, pursued a Ph.D, taught at various higher education institutions, bootstrapped startups, written books, built software that deploys software to hundreds of thousands of systems and generally enjoyed working with technology. Here you will find a variety of things that I have chosen to publish and share with the world - hopefully you find something of use here!
I am available periodically for low-volume, high-impact consulting; feel free to contact me if you're interested. (My e-mail is john at this domain)
I specialize in building software on the JVM that scales (see things I've worked on) as well as system architecture but I can usually fix or build just about anything or teach you how things work.
I am the author of a few books:
- Chef Essentials
- Managing Windows Servers with Chef
- Instant Chef Starter
- Instant Parallel Processing with Gearman
Sometimes I write about things I am working on or have learned
I am currently teaching part-time at Northeastern University and have previously taught courses at the University of California, Merced, Columbia Community College in beautiful Columbia, CA as well as California State University, Stanislaus on subjects including data structures and algorithms, big data analysis, machine organization and operating systems development.
RecentlySome things I have built or worked on at various places:
- Architected and launched Alexa video
- Built AWS CodeDeploy
- Amazon's internal deployment tool  
- Expedia's migration to AWS
- Chef's provisioning tools and hosted services
I do a lot of programming in Ruby, Python, Java, Scala, C, C++, C# and (most recently) Erlang and Go; I have also been known to do some data analysis with R.
I am the maintainer of a few projects, including the following:
- The official Gearman Ruby library
- A popular Ruby metrics gem
- A high performance Java implementation of the Gearman server
Additionally, I have made significant contributions to a number of popular open source tools: