Contractor through Sapphire Technologies/RandstadManager, Custom DevelopmentTeam leader of software engineers who provide custom development for the Point of Sale (POS) systems. Development manager on various POS system projects.• Managed the full life cycle of custom development applications from project estimation through design, development, system test, QA, beta and implementation• Supervised a POS upgrade project that included the operating system, database, image process and register hardware including deployment to over 2000 stores• Maintained development project plans and provided weekly status reports• Communicated with external vendor on hardware and software projects• Worked with Project Manager, Business Analysts, Architecture, Security, PCI office, Infrastructure, Implementation, Store Operations, Quality Assurance and Service Desk teams on all phases of the projects from requirements through post-deployment• Ensured proper process including project documentation and change control to meet SOX compliance

Global team leader of 3 direct managers and staff of 28 engineers who provided maintenance and support of primary site functions in a follow the sun model. • Managed the full life cycle of monthly maintenance releases completing 98% on time including working with product group to prioritize bug tickets and scope releases. ~1500 tickets successfully resolved per year.• Ensured team successfully triaged >30 customer tickets/day and provided solution and root cause analysis• Successfully completed project to consolidate code from multiple international sites reducing code maintenance costs• Employee retention rate for core sustaining team of 98% over a 10 year period• Instrumental in the implementation of new security procedures and fraud prevention initiatives• Provided primary contact for Product Help Desk for all site escalations. • Worked on closed loop bug tracking process to ensure customer issues were resolved and reported back to the end user• Monitor and report on team’s progress on ticket completion, code reviews, test plans and integration testing• Design, manage and support internal administration application for use by developers, customer service, and the product help desk. Developed technical design based on requirements, conducted WebEx training sessions on new features, wrote user’s guide and release notes and conducted integration and release day testing of the system.

Designed, developed and supported mission critical applications software and corresponding documentation. Provided Project management for software projects including budget tracking, scheduling, client contact and technical support.• Design and programming of 3 versions of Raddose, a radiological dose assessment model for nuclear power plants. All versions included full-screen data entry, site-specific graphical display of the path of each plume, various options to report the results and help screens. The model included automatic data entry from plant meteorological towers through modem or network connection. Extensive documentation package included: user's and programmer's manuals, software requirement specification, detailed design manual, verification and validation document and acceptance test plan.• Design and programming of WEBS, a Visual Basic program that automated Emergency Broadcast System messages for radiological emergencies and natural disasters. • Programming of a user interface in Visual Basic for an air quality model, CalPuff, which predicts the emission of pollutants from power plants. • Design and programming of Win-Dose to model the diffusion of isotopes between rooms in a nuclear power plant. • Development of a noise model for the operation and construction of electric power generation facilities. Technical Papers:• O'Hare, M.J., Hahn, K.J., "Automating the Protective Action Process", Presented at the Fifth Topical Meeting on Emergency Preparedness and Response, Savannah, Georgia (1995)• Bodley, D.D, Hahn, K.J., O'Hare, M.J., "Automating Scenario Data Development", Presented at the Fifth Topical Meeting on Emergency Preparedness and Response, Savannah, Georgia (1995)• Teplitzky, A.M., Hahn, K.J., Keast, D., “Computer Model for Estimating Electric Utility Environmental Noise”, Presented at the 1991 National Conference on Noise Control Engineering, Tarrytown, NY (1991).

Served as an Applications Programmer that wrote, updated and ran analysis and graphics plotting programs for meteorological data. Designed a microcomputer graphics and flow-charting package for output on a laser printer. A major project included programming of CONVMET, a VAX program that converted NCAR (National Center for Atmospheric Research) graphics metacode from a CDC CYBER computer to a DEC VAX.Technical Paper:• Co-authored a paper on “A Graphics Capability for the Space Physics Analysis Network (SPAN)”, March 12, 1986, Air Force Geophysics Laboratory Technical Memorandum No. 120.