Mark Heller Email & Phone Number

Milwaukee, WI, US

Amsterdam, Noord-Holland, NL

• Developing Linux and embedded software for Vereos, the world's first all­digital PET (Positron Emission Tomography) medical imaging system.
• Key contributor in bringing the image data acquisition subsystem from proof of concept to product.
• Responsible for C/C++ software design and implementation, in an Ubuntu Linux environment, for the platform API and scan control / monitoring.
• Developed embedded firmware for the hardware subsystem running Altera's NIOS2.
• Participated in board­ and system­level bring­up activities, troubleshooting a variety of hardware /software issues.
• Investigated and resolved software defects. Provided root­cause analysis, risk identification, and unit testing throughout the progressive stages of product development.

Amsterdam, Noord-Holland, NL

• Developed software for Philips 7.0 Tesla Research MR Scanner.
• Created software for the PMU (Power Monitoring Unit), which used an Atmel AVR processor, controlling an Analog Devices DSP, to monitor Radio Frequency (RF) output of the MR Scanner. The software was written in C, C++.
• Created software to control high power gradient amplifiers used on the MR scanner.
• Created, and maintained diagnostic software running in VxWorks on the scanner, with the user interface portion running on the Windows based console.
• Created, and maintained a Windows Device Driver, and diagnostics for the reconstruction server for the bulk data board, which was the image data interface for the system.

• Developed software for Picker/Marconi Infinion, the worlds shortest 1.5 Tesla MR (Magnetic Resonance)Scanner.
• Configured, and maintained board support packages (BSP) for various Single Board Computers (SBC).
• Tested, and selected SBCs for the MR scanner, and reconstruction systems.
• Performed configuration, and support activities for Wind River VxWorks real­time operating system, used in all Picker/Marconi MR scanner systems.
• Designed and implemented MR reconstruction software used in a scaleable reconstruction system, using from 3 to 10 separate VME based SBCs, all running Vxworks.
• Ported reconstruction library to the PowerPC Altivec unit.

• Developed software for the Fluid and Combustion Facility (FCF), for the International Space Station (ISS).
• Developed software in C++, using the VxWorks Operating System, for various motor controllers.
• Developed software in C++, using the VxWorks Operating System, for cameras, raster scanners, and frame grabbers.
• Developed software used for down-link of science data from the ISS.
• System administrator for system used for distributing Tele­-science data to the Principle Investigators running experiments on the International Space Station.
• System administrator for the computer system hosting the VxWorks build tools, and Tornado tools.

• Lead software development effort on digital nuclear medicine data acquisition system.
• Designed, implemented, and maintained real-time data acquisition and processing software using VxWorks operating system on both Power PC and 68xxx processors.
• Created user interfaces for acquisition and calibration software for Nuclear Medicine systems using Unix (OSF/1, Digital Unix), Dec Alpha computers, and Xwindows/Motif.
• Designed user interfaces using BuilderXcessory CASE tools.
• Supported advanced development efforts by writing specialized software modules for support of research efforts.
• Designed, wrote and maintained kernel and device driver software for VxWorks operating system.

• Designed, implemented, and maintained software for research and development efforts using VxWorks, Unix (OSF/1 and Linux), and Xwindows/Motif.
• System administrator for Unix, Dec Alpha workstations and Linux PCs.
• Performed other duties as needed, including soldering, and assembling printed circuit boards, performance testing of imaging electronics, and benchmarking of new imaging technologies.

• Maintained motion control software for 5 processor 8085 based gantry positioning system.
• Designed, wrote and maintained data acquisition and system software for PDP­11 based acquisition system using Macro­11 assembly language and both the RT­11 and TSX­11 operating systems.
• Wrote and maintained application software for Nuclear Imaging system in Fortran and assembly language.
• Designed, wrote and maintained firmware for a handcontrol using a Motorola 68hc705 microprocessor.
• Ported several firmware debuggers to embedded micro boards with 68302 and 68000 microprocessors.
• Maintained acquisition software for Nuclear Imaging system with homebrew operating system and Motorola 68000.

Ba, Computer Science

Welding

High School