Acquired by Diffeo

• Architect and technical lead for all of the revenue generating systems at Fiksu, primarily designed to optimize and measure mobile advertising spend.• Awarded ‘Inventor of the Year’ award in 2012, author of 5 patents and manage the patent filing process.• Designed, built and manage a high availability (zero downtime) large-scale (hundreds of billions of records) database (PostgresSQL, Redshift, DynamoDB and proprietary systems) that is accessible on the public network for communications with mobile phones to collect advertising statistics. • Designed and built an information management system for automating the synchronization of data with advertising networks and internal services. • Built client accessible dashboard (using Ruby/Rails) to monitor business results in one week.• Designed and built the patented system that became freemyapps.com (dominant source of company revenue) including the patentable work for authenticating mobile devices and the methods for thwarting fraud.• Designed and built large-scale, distributed fault tolerant script management, framework and scheduling system used to process the vast majority of system functions. It has run hundreds of millions of processes.• Designed and built information visualization system and tools for the client services team to analyze data feeds.• Designed and built a system processing all advertising network performance data (using a Bayesian filter) to predict conversion rates and maximize client results.• Designed and built a patented digital fingerprinting system used to determine conversion rates when direct device identification information is not available.• Designed, developed and open sourced gems supporting Postgres and other systems (pointers to source, here: https://rubygems.org/profiles/keithgabryelski and https://github.com/keithgabryelski): • Manage and mentor engineering staff. Built initial team as staff grew from two to thirty.

• Re-architected and implemented a “Returns Authorization” system. The system is written in Python using XML to interface to clients’ Point of Sale machines.• Designed and implemented a framework for the Return Authorization system which abstracted the database mechanics, the client interface, and store-specific processing.• Replaced non-standard class implementations with their j2ee equivalent classes in Sensormatic’s investigative (Java) applications to ease interfacing with client application containers. Implemented an interface to SiteMiner™. Documented the classes that had been, until that point, left un-documented and misunderstood.

• Designed and built SIP/VOIP-base telephony features in Java, including incoming/outgoing calls, conferencing, and voice-mail to a communication system whose base customers are telecommuters. Responsible for evaluation and selection of SIP server stack, feature selection (with marketing) and implementation.• Designed and developed an alternative to the base product “ZCR” or “Zero Cost Router” a SIP proxy that manages SIP gateways enabling users to make the cheapest or free calls providing they are authorized to use a given gateway.

• Designed and built a prototype system in C#/ASP.net to encode, encrypt, transport, load, and play-out digital cinema UK Film Council request for bid. We won the tender. The prototype was turned into a profitable business in London for about 200 Theatre Screens.• Designed and Built a Fandango-like website for PictureHouse Cinemas, LTD (London Based) using C#/ASP.NET. Interfaced with a XMLRPC based data repository for event information, member management, and ticket sales.• Designed, built, and interfaced highly-available large-scale recommendation server for DVDs for LOVEFilM (a Netflix-like company in London). PHP/C#/ASP.NET. A large amount of work was put into stand-alone test-harnesses for performance testing, reliability, and tuning for the specific client as well as interfacing to their PHP/MySQL code (and performance testing on their side).• Various work on other websites: spotrunner.com, nalc.com, artsalliancelabs.com (C#/ASP.NET).

• Built Java-based applications for the danger device including a superior to do list and ring-tone recorder/installer.• Designed and Developed a PHP/MySQL based community-centric framework for building websites.• Built a prototype for a nutritional website using framework.• Designed and developed a picture-based journal website using framework.• Designed and developed various web-based games using framework.

• Responsible for research and development of data services for a 60 billion dollar cellular service provider in Europe, Asia, and Africa. Hands on development manager. Designed and implemented a tool for the visualization of the technology landscape (C++/TCL/XML/Python/Perl). Examined, enhanced, and catered services to be delivered in the 2.5G (GPRS) and 3G networks within the 6 to 24 month timeframe.• Liaison between French, English, and American project groups assisting these groups in the consolidation of development groups. This work required extensive travel to England, France (I speak some French and some British English).• Designed and/or developed various services for sports visualization, blue tooth location services, WAP application platforms, MMS manger, OTA (Over the Air) updates. Development on Compaq IPAQ, SmartPhone, Danger Device. • Assisted our venture capital firm with company and technology analysis.

• Designed and developed a website for after-sale marketing systems using C++/TCL/AOL Server/ACS/JAVA/XML running on top of Solaris. Responsible for database development (Oracle) and "skinning" front end interfaces to on-line point of sale partner sites. In addition to my development roles, I was also responsible for managing partner relations and new partner acquisitions.

• Fifth employee. Designed and developed a machine you could talk to that acts like a secretary. A voice activated personable assistant, named Wildfire; available over the phone that manages contacts and schedules.• Responsible for design and development of the C++/UNIX based prototypes and Version 1.0. Responsibilities included multi-media user interface, voice mail subsystem, lower level device abstraction (T1/E1, Analog Phone Lines, ISDN, and Voice Recognition System). Technical lead for the team converting the version 1.0 object database (ODI) store to RDBMS (Oracle).• Developed from scratch C++ classes for runtime type checking, exception handling, an object-oriented wrapper class for SQL database, various templated classes that mirrored C++'s Standard Template Library (as the STL was not defined yet), a generic object marshalling system which included support for templates.• Hands on development manager for Enterprise edition, built team to deliver hardware and software.

• Lead a team that designed and developed UnixWare's multithreaded TCP/IP implementation. My individual contributor work included most of the kernel code and user level libraries. Technical team lead working on the rest of the implementation including the kernel modules and user level applications.

• Developed coin operated video games on Z-80 based proprietary hardware. Most work was done in Z-80 assembly: Power Play, John Elway’s Quarterback, and Alley Master.

• Developed coin operated video games on Z-80 based proprietary hardware. Most work was done in Z-80 assembly: Power Play, John Elway’s Quarterback, and Alley Master.