Chief Engineer and Engineering Manager at Jowa USA, Littleton MA. Jowa is a worldwide company, with the USA group specializing in measuring tank levels, primarily on cargo ships.

• Various embedded microcontroller designs related to products that measure tank levels and draft, then interface to ship systems. Personally designed the circuits, boards, and low levels of the firmware. Managed others that designed the firmware higher levels, host software, performed drafting, etc.
• Created coherent CAN-based architecture for new products going forwards. This concept has been realized in several new products, with more in the pipeline.
• Worked on and coordinated design of updated products to replace old ones, from concept to setting up production. Old products needed replacing mostly due to using obsolete parts.
• Oversaw the design and personally designed the electronics and firmware for the new Jowa Ag-S, which is an integrated silver-ion water treatment system.
• Key contributor to research on using electrical means of adding controlled amount of silver to drinking water for disinfection. Developed proprietary algorithms for the Ag-S as a result.
• Instituted HTML-based indexing of internal documentation and drawings. It was previously difficult to find all the drawings relating to a particular product or part.
• General technical resource in a small company. Included dealing with issues that arose in manufacturing, diagnosing and repair of custom machines when they fail, etc.

Principal of Embed Inc, a custom engineering and consulting company specializing in embedded systems. Some example projects were: 

• Various digital closed loop control systems.  These included controlling a solenoid-driven valve to maintain a set pressure, controlling fillament power and high voltage to get the desired output from a x-ray tube, and motor controllers. 
• Various switching power supply and power conversion projects.  Invented and developed new algorithms in this area. 
• Various microcontroller-based motor control projects, including brushless DC motors. 
• Distributed devices on a CAN bus.  Developed EmCan, a protocol layer above CAN that provides common infrastructure for many individual sensors, actuators, and other devices within a system. 
• Small wearable tags that receive data from fixed stations via ultrasound.  Included designing low power ultrasound front end amplifier and receiver (35 µA at 3 V with >1000 gain at 40 kHz). 
• Rechargeable battery management. 
• Circuits and firmware where low power usage was a high priority. 
• Various data loggers, some examples:  Heart rate, speed, and other parameter during a bicycle ride.  Live telemetry from body-mounted motion sensors during a golf swing.  Data from passive IR sensors to detect a human falling within their view. 
• Signal processing on a host computer and on dedicated embedded signal processors.  One project included automatic detection and subsequent reduction of repetetive noise. 
• High accuracy analog circuit for measuring micrometer deflections of LVDT probes. 
• Rotating LED displays, which included transferring data and significant power over a rotating interface.  High end version contained 96 full-color LEDs requiring 75 Watts of power. 
• Flight Simulator.  Created the system for making the hundreds of cockpit control and sense signals available to the master software via a procedural interface. 
• Designed fixtures and jigs for production test and diagnostics.  Worked with a external mechanical engineer to develop a easily customizable basic platform for circuit board testing, used several times for different projects. 
• Created Embed's PIC development environment for firmware for Microchip PIC microcontrollers (download).  Includes extensive PIC assembler preprocessor and macro library that provide features not present in the native tools, such as symbolic global 1-bit flags, symbolic handling of individual I/O pins, floating point, better macros, etc. 
• Created TCP/IP network stack in assembler on a PIC 18 which has been used in several products since then. 
• Created the physical products that Embed sells.  This included conception, hardware and firmware design, and setting up volume production. 
• Established relations and experience with external resources like mechanical engineering, industrial design, driver development, and volume production that can be called on as needed for specific projects.  This includes a excellent working relationship with a factory in Serbia where we have had over a dozen different items produced in volumes from less than 100 to over 1000 pieces, both for our own purposes and for our customers. 

Electrical and firmware engineer for Radianse in Andover MA.  Radianse was a startup company creating indoor location systems to track equipment, staff, and patients in hospitals.  Activities included:

• Design of the new model 410 receiver.  Receives RF telemetry and IR signature from active RFID tags, decodes and verifies the data, then passes it on to the main server via TCP.  Production cost below original target. 
• Developed firmware for all the RFID tags, and consulted on their electrical design. 
• General resource as needed to help get products through manufacturing. 
• Researched alternate algorithms for determining tag location. 
• Co-inventor of several of the Radianse patents. 

Co-founder and Principal of Cognivision Inc, which originally provided data visualization software and related products and services to scientists and engineers.  Cognivision eventually transitioned to a consulting company and was renamed Embed Inc (see above).  Specific experiences included:

• Custom training and consulting in computer graphics. 
• Created software portability environment for high end graphics application to run on different platforms with no source code changes. 
• Created software for automatic translation of Pascal to C as part of the build process. 

Design engineer at Apollo Computer.  Key contributor to architecture of DN10000VS graphics controller, and helped coordinate project at a technical level.  The DN10000VS was the first commercial workstation to incorporate industry leading graphics features such as alpha buffering, texture mapping, quadratic interpolation, and sub-pixel addressing.  Major contributor to theory and algorithms for the advanced features, and co-inventor of several patents relating to the DN10000VS. 

Engineer for Raster Technologies, a manufacturer of computer graphics display controllers.  Major contributor to the 3D products.  Included designing instruction set, writing host software, embedded firmware, micro-code, and hardware design of a floating point 3D processor. 

Engineer at Hewlett Packard's New Jersey Division.  Designed digital and analog instrumentation circuits for data acquisition and process control products. 

Various on-campus jobs while working towards master's degree.  Wrote operating system for a mini-computer in assembler.  Designed and built analog testbed for researching charge coupled device (CCD) integrated circuits.  System programmer for Interactive Computer Graphics Center.