Patrick Schweiger Email & Phone Number

Austin, Texas, US

Rockville, Maryland, US

• Forked WebSocket based whiteboard for distribution, access control, input validation, and audit snapshots
• Led rapid integration of ProctorU remote proctoring to mitigate coronavirus test center closures
• Added multi point item to assessment form assembly and delivery item type featuring virtual machines
• Implemented network disruption detection and automatic clock adjustments on recovery
• Modeled and implemented certification renewal via CPE
• Provided key support on migrations to a new private datacenter - later to AWS

• Lead complete re-architecture and implementation of a shopping deals consolidation engine
• Separated front and back end applications – implementing back end and database model fromscratch
• Designed/implemented Solr schema, DIH, custom build applying SOLR-1782, multi-coredeployment, incremental updates, PHP client and domain logic - all shared by MVC integrationadapters for symfony and Zend Framework
• Offer to product matching with domain specific text preprocessor and MySQL full text hybridsolution to achieve performance and result set accuracy requirements
• Consolidated/replaced majority of front end view layer and client side JavaScript application,introducing coherent caching at various levels including the browser
• Introduced shared storage, event driven updates, and filters in the Javascript application,allowing for component reuse and fine grained event analytics

• Created full stack for image intake/selection application integrated with NetSuite web services - frompersistence to ajax in customer facing and administrative user interfaces
• SuiteScript scripts to introduce order status pseudo states for end users

• Consolidated four forks of symfony API order intake application, introducing interfaces, propel superclasses, and delegate implementations
• Migrated multiple applications from symfony 1.1 to 1.2, then to 1.4
• Integrated PHPUnit
• Replaced redundant print server applications with a single server and client
• Bulk order intake, image manipulation and print servers for custom integrations with Phillip Morris, Hewlett Packard, and CafePress
• Ported majority of image manipulation from PowerSwitch/PhotoShop based stack to ImageMagick on GNU/Linux

Denver, CO, US

• Designed, implemented, and refactored server side infrastructure
• Refactored image manipulation code base on web servers, image manipulation clusters and bulk upload Java applet, reducing code base by 30% while improving efficiency
• Applied JFIF knowledge to transmit bare image data to remote moderation sites decreasingtransmission costs
• Replaced large set of data gateway factories with a registry, simplifying model creation and migration, while reducing code in a fourth branch of a parallel class hierarchy
• Refactored configuration subsystem making routing configuration merges 12 times faster
• Designed and implemented end user comment filter using visitor/builder patterns to limit HTML tags to a permissible subset and translate all possible image link styles

Denver, CO, US

• Refactored, documented, and supported framework code based on CakePHP to provide data access abstraction layer to decouple application from a set of databases
• Redesigned then implemented audio file conversion system to fork/join multiple processes to better utilize hardware - significantly improved error detection, handling and reporting - repaired IFF mark chunk parser bug.
• Refactored large parts of in-house content ingestion and management system
• Unified business rule enforcement relating to contracts, product life cycle, pricing and taxes, and cross-store product availability across applications
• Streamlined meta data ingestion when adding support for EMI's format
• Repaired server side view/model cache coherency - enabling synchronized client side caching in the process

• Graphical user interfaces, network servers, and hardware monitors on FreeBSD UNIX systems serving as time and frequency source, distribution, and measurement systems.
• Most user interfaces written in C++ using gtkmm and glibmm
• Back end processes provided command line interfaces
• SNMP v2c agent with in-house C++ wrapper for Net-SNMP, and corresponding Java Swing based SNMP entity manager using Westhawk's SNMP stack
• Designed, implemented, and maintained in-house C++ wrapper libraries for sockets, pthreads, SysV IPC, and user interfaces
• Developed major components for over 10 products

Computer Science

Ged