Summary

Skills

• Platforms and Languages 
• Unix (Linux/MacOS/FreeBSD/Solaris), plenty of Android, a little iOS
  
• fluent: Java, Ruby, PHP, C/C++, JavaScript, perl, ksh/sh
  
• starting to learn: Scala, AWS, Chef
  
• trying to forget: elisp, ML, Prolog, Modula-2, Pascal, Fortran, BASIC, assembly
• Technologies, Tools and Methodologies 
• REST, HTTP, AJAX, OAuth
  
• Apache/Tomcat, Play Framework, Hibernate, Rails, Node.js, RESTEasy, Spring, RabbitMQ, Swagger
  
• MySQL (MyISAM, InnoDB), NoSQL (MongoDB, Redis, memcache)
  
• github, Jenkins, JIRA, Loggly, NewRelic
  
• test-driven development, continuous integration, Jenkins, Cucumber, JUnit
  
• JSON, HTML/CSS, XML
  
• git, ant, maven, subversion, gmake/make, Perforce, CVS/RCS, CodeManager/SCCS
• Yahoo proprietary: transaction replication, proxied shared memory, scalable entity databases, packaging

Experience

2011 - 2018: Kabam

• Helped migrate payments/accounts/forums systems (MySQL, Java, PHP) from owned hardware to AWS via RightScale. 5 minutes downtime during DNS cutover.
  
• Led design/implementation of new Kabam Account system in Play/Scala/Mongo; migrated 40M accounts from Java/MySQL with no downtime. (1. wrap new REST API around old system. 2. migrate accounts and invert the relationship so the old system became a client of new.)
  
• Led design/implementation of Unity/Android/iOS client SDKs for accounts, player-tracking, and mobile loyalty services
  
• Designed REST APIs and patent-pending security model for accounts, player-tracking, and mobile loyalty services (>50M requests/day for >300M game-players)
  
• Solved api.kabam.com deadlocking problem (memcache use caused DBs to be opened in different orders)
  
• Led design/implementation of alliance forums service (PHP frontend -> RESTEasy Java backend)
  
• Designed/implemented single-signon between Kabam's gaming portal (Ruby on Rails) and forums (vBulletin on PHP), migrating millions of VB accounts to Kabam Accounts with no downtime (by re-migrating hashes of passwords changed during migration).
  

2010 - 2011: Yahoo! Open Social

• Modified Activator's Java Hadoop code to generate JSON as intermediate format in scraping user email for suggested social contacts
  
• Modified Yahoo! Application Platform (YAP) web service (PHP backend, JavaScript client) to support event syndication across partner social networks
• Implemented C++ event consumer to do memcache invalidation for YAP Most-Recently-Used Apps system
• Updated YAP search web service to do parallel fallback searches across locales
  
• Created YQL table for YAP app search web service after modifying web service interface to be YQL-friendly
  
• Maintained Y! developer forum (Invision PowerBoard, PHP) -- security fixes, integration with Yahoo IDs, etc.

2002 - 2009: Yahoo! Personals

• Responsible for engineering efforts to detect, monitor, and automatically defeat abuse of our service (e.g. spam, fraudulent profiles).
• Led rearchitecting of Y! Personals mailbox system to replace NFS-based storage with MySQL.  800K unique users/day viewed 3M pages/day and sent 300K msgs/day, involving 5M mailboxes containing 500GB of user data.
• Designed/implemented live data integration with our email marketing partners (first Digital Impact, then CheetahMail). Designed/implemented site and data integration with our affiliate-management partner (Commission Junction).
• Designed/implemented Y! Messenger Personals search plug-in (in JavaScript) and the web services (in PHP) that it used.

1999 - 2001 Sun: Webtop Applications

• Led StarSync project (4 engineers), which built a SyncML-compliant HTTP service (using Apache/Tomcat/JAXP) for XML-based synchronization of folders and documents between the SunONE Webtop and Java/PalmOS clients. Designed algorithms (three U.S. patents approved) for content synchronization. Implemented client- and server-side Java classes for change detection, synchronization, and conflict resolution.

1993 - 1999 Sun: COSE, Desktop Technologies

• Led Solaris Desktop Extensions project (5 engineers), which used Win32 & Java to add to Solaris 8 a PC Launcher (for opening apps/docs in Win32 hw or sw emulators) and a Java media player. For Solaris 7, the project created an address mgr (sdtname), process mgr (sdtprocess), file finder, and window mgr graphical customizer. Coded sdtname and sdtprocess using C++ and Motif.
• Designed and helped implement the incorporation of ToolTalk into the window mgr, file mgr, action system, Korn shell, & app builder of CDE (the Sun/HP/IBM COSE standard desktop). Authored ToolTalk and Open Protocols (SunSoft Press, 1994). Designed and implemented integration of CDE file mgr with removable media (e.g. floppies, CDs) in Solaris 2.6.

1990 - 1993 Sun: DOE (Distributed Objects Everywhere)

• Designed, implemented, and evangelized the ToolTalk interfaces adopted for the ANSI X3H6 CASE IPC standard. Designed and evangelized TT interfaces incorporated into Sun's Workshop and DeskSet products. Helped implement TT features, thread-safeness, performance, security, and bugfixing. Helped create transition strategy from TT to DOMF (Sun's CORBA ORB).
• Helped develop ToolTalk 1.0: Sun's C++-based cross-platform middleware for IPC among persistent distributed objects. Designed and implemented remote API and message tracing; integrated Unix file utilities with TT persistent objects. Created ttsh scripting shell and CoEd, an open-source groupware editor demo.

Education

• 1990 U. of Michigan - M.S., Computer Science
• 1987 U. of S. Mississippi - B.S. Computer Science

Patents

• Facilitating Multigame Currencies In Multiple Online Games, U.S. patent 9895613 issued 2018 filed 2014
• protects deposits and withdrawals with different security levels using only 3rd-party authentication
• Facilitating users to obfuscate user credentials in credential responses for user authentication, U.S. patent 9172697 issued 2015, filed 2013
• a way to securely input a password on an untrusted or monitored device
  
• Textual Authenticity Detector, U.S. patent 8353008 issued 2013, filed 2008
• mathematical analysis of grammar and lexicon to detect frivolous text
  
• File Tree Comparator, U.S. patent 7702641 issued 2010, filed 2001
• File Tree Conflict Processor, U.S. patent 7165248 issued 2007, filed 2001
  
• File Tree Change Reconciler, U.S. patent 7085779 issued 2006, filed 2001
• these three patents implement a variant of the lock-free Distributed Operation Transform (dOPT) algorithm as applied to file trees
  
• Graphical Action Invocation Method, U.S patent 6433800 issued 2002, filed 1998
• extends the right-click context-menu idiom as a toolbar of drop sites, to allow dropping "direct objects" onto any of these actions (verbs)

Projects, Publications, Presentations

• Zoe: an artificial life simulation (source here) in which organisms hunt, fight, mate, and reproduce under the control of programs that mutate and evolve
• "Webtop Synchronization using Java, XML, and SyncML", JavaOne 2001
• "Desktop Solaris", Sun Developer Connection HQ Briefing, 1998
• ToolTalk and Open Protocols, SunSoft Press, 1994
• "Ch. 7: ToolTalk and DeskSet Integration", in Solaris Desktop Integration Guide, SunSoft Press, 1992