The Evergreen State College

Western Washington University

Founder at Seattle.rb Consulting, LLC

Seattle, Washington, United States

Founding member. Organized, spoke, mentored, tutored, etc.

Seattle.rb

Founder

Open source development on various chef projects (mostly inspec).

Chef Software

Senior Software Engineer

Private consulting for various clients. Ruby, rails, open source collaboration, etc. I prefer optimization, stabilization, hard to debug problems, and scaling issues.

Seattle.rb Consulting, LLC

Worked on open-stack in support of our cloud offering.Developed open-source ruby libraries and present at ruby conferences.Worked on internal tools/websites for one of our many “Cloud” offerings.

AT&T

Señor Software Engineer

Worked on ruby and/or rails stuff for internal and external projects.Taught various workshops internally.Managed the remote app services team.Managed the application services team. Pumping 50-70k rpm. rawr. Topped at 99k rpm or 1 billion reqs/week!Managed the tools team.

AT&T Interactive

Señor Programmer & Manager of Application Services

Contribute to implementing early stages of rubinius focusing on the compiler and parser.

Engine Yard

Rubinius Core Developer

Ruby on Rails development for a social yadda yadda website.Re-engeneered the entire application simplfying the design:* Test time improved 20x.* Code size was reduced 40%.* Test size was reduced 50%. (code to test ratio went from 1:1 to 1:0.8).* Massively improved developer productivity (and morale).

LimeSpot (a division of Lime Wire LLC)

Señor Developer

Designed curriculum.Taught ‘Ruby: The Core Language’.Co-taught ‘Advanced Topics in Ruby’ 2008-Q3 w/ Aaron Patterson.

University of Washington Educational Outreach

Educator

Ruby and Ruby on Rails development, development process improvement, TDD mentoring.

Independent Consultant

Healthcare enterprise data integration with Java, Ruby, and Ruby on Rails.Addressed idioms, design patterns, refactoring, and testing on a medium-to-large sized j2ee implementation.

SHPS

Señior Software Developer

Team lead of two (inclusive) to test and validate four primary applications, some secondary applications, and many addons to our primary applications.Responsible for maintaining and extending all build scripts and related tools, written in zsh/sh, Ruby, and perl.Inherited the bug database and client application. Used XP with weekly releases and took the application from something that was reviled to a very functional app that is used by all engineers, tech support, and QA on a daily basis.Cut the number of DB tables in half.Cut the application code by one third.Designed and implemented an automated release process reducing the number of errors in software releases and reducing the time to release a product from 2 days to 1 hour.Implemented a continuous build system for all of our products. This insured that bad CVS commits were noticed immediately.Instituted a code review policy for (nearly) all commits, reducing the number of errors that get committed in the first place.Validated more (stale) bugs than I’d like to admit.

The Omni Group

Quality Assurance / Lead QA

Member of an uber-elite task force to refactor and port entire source repository (1000+ modules) to new scalable build system. Contributed to milestone 4-6 over a 6 month period. Lead milestone 5 over a 6 week period.Wrote C/C++ parsing tools in Perl to analyze file, module, and package level dependencies of the entire codebase (1000+ modules) and provide numerous reports and graphs.Investigated problems with the length of a full build. Profiled 10000 individual compiles and isolated problem files. Actually found a single file that took 18 minutes to compile. A very simple change reduced that time to 7 seconds. Directly reduced build by 30 minutes (serial).Investigated problems in scaling the build system. Wrote tools to analyze binary symbol sizes.Extended the same build system for compile-only (no application linking) runs to optimize refactoring runs. Brought build time from 12 hours (on desktop linux box) to 3 hours (first pass, 5 minutes for second pass w/ no changes).Verified and fixed make system for 500+ source modules and applications to optimize refactoring work and incremental builds. Brought incremental build time from 5 hours to 5 minutes. Literally.Reverse engineered website order pipeline (many many many C/C++ files) to provide a scriptable tool (in C++ and ANTLR) to flexibly generate orders at a massive speed (compared to using the website). Saved at least 4 man-days/week for one QA group alone.Architected automated test engine for website testing including an easy to understand script language for writing tests, a non-linear multi-threaded task queue, with a well organized object design in Java.Lead Developer in Quality Assurance Tools group. Team topped at 5 engineers and produced over 75 systems, programs, CGI and scripts for various testing tasks, software engineering tasks, configuration management, and process management.

Ryan Davis