Thomas Ulrich

Experience

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  Hughes Aircraft Company

  Jul 1984 - Feb 1986

  Member, Technical Staff

  Designed and implemented (1) a thermal analysis program for micro-circuits (2) a new generation of software for a large laser trimming system (3) several interfaces between the VAX and various automatic assembly and test machines.

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  Parker Hannifin

  Feb 1986 - Oct 1996

  Principal Engineer

  At Parker, I worked in two centralized engineering departments that provided engineering services to multiple divisions of Parker, hence I worked on a wide variety of projects including:o Electro-Hydrostatic Actuators (EHA)..... Worked on four EHAs. All of these projects used real-time embedded software which included closed-loop control (PID), low level hardware interface (device drivers), redundancy management, cross-channel data links, and built-in self-tests.o Other Flight Software Projects.... Designed and implemented the software for .... (a) the Thrust Vector Controller for stages 2 & 3 of the Pegasus rocket, .... (b) a digital controller for a vapor cycle system for the Apache Longbow AH-64D, and .... (c) an prototype digital fuel injector system for a Gas Turbine Engine.o Industrial Motion Control Projects.... Designed and implemented the software for .... (a) two digital programmable motion controllers "PMC100/EMC100 and "Mighty Dog", .... (b) a refrigeration process controller "EVAC", .... (c) an industrial defrost controller and .... (d) an optical proximity sensor. I also designed the digital hardware for the EMC/PMC 100 and the optical proximity sensor.o Motor Control Projects.... Designed and implemented software for a digital 15HP AC Induction Motor Driver, and a digital DC Brush pump driver/controller.o Specified and designed the software for an Ambulatory Medication Infuser. Show less

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  Delphi Engineering Group

  Oct 1996 - Dec 1999

  Principal Engineer

  o While at Delphi, I worked on three major projects:.... Rudder Control System for the Hawker Horizon Business Jet (DO-178B, Level A). .... Throttle Module Signal Conversion Unit for the Hawker Horizon (DO-178B, Level C). .... Light Hybrid Torpedo (MK-46, Mod 8) Hardware Application Layer for the Sonar Processor.o For all three projects, I designed, implemented, and tested the software and wrote the required process, design, and verification documents. o Created an intern program. Show less

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  Broadband Storage

  Jan 1999 - Apr 2003

  Technical Director

  When Delphi spun off Broadband Storage, I was asked to take a career detour by becoming the chief architect of the file system that they wanted to develop for their network attached storage product. o Designed and implemented a full-featured, fully distributed, file system. o Wrote all of our process documents. o Led the file system software team. o Created an intern program.Please note that I consider my time in network attached storage as a detour, and I am not interested in returning to that industry. Show less

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  Parker Aerospace

  Apr 2003 - Jul 2005

  Technical lead for a rescue effort of a DO-178B “Level A” flight control actuation system that was several years behind schedule. o Recruited, trained and led a team of 40 contractors to finish development and formal verification of the software. o Rewrote system requirements specification and the software requirements specification. Systems engineer for the Flight Control Actuation System on the F-35 Joint Strike Fighter. o Worked on the vehicle management systems data-bus design. o Worked on the automated actuator test console; designed the scripting language.

  • Sr. Principal Engineer/Contractor

    Feb 2004 - Jul 2005

  • Sr. Principal Engineer/Contractor

    Apr 2003 - Feb 2004
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  Aubrey Group

  Jun 2005 - Nov 2007

  Sr. Software Engineer

  While at the Aubrey Group, I worked on three projects: o a device which mixed chemicals with blood, o a class III implantable medical device which included logic to control the selection, charging, and discharging of a network of Lithium-Ion batteries, and o a device which administered a high voltage (30,000V) therapy. For all three of these projects, Io designed and implemented embedded ANSI C software for an ARM7.o wrote all of the software design documents.o supervised the junior software engineers working on the project. Show less

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  Phluid, Inc. (Later renamed Tandem Diabetes Care)

  Nov 2006 - May 2008

  Sr. Principal Embedded Software Engineer/Contractor

  As a contractor, I was involved in all aspects of the early development of Tandem's t:slim insulin pump software. This included writing code in ANSI C for ARM Cortex and MSP430.

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  Tandem Diabetes Care

  May 2008 - now

  Engineering Fellow

  Engineering Fellow (Feb 2022 - Present)o In this role, I continue to lead Tandem's Scientific Computing Group as we create next-generation dosing algorithms, assess device compatibility with our pumping platform, and provide analyses requested by FDA.o My work includes creating proprietary analysis tools using both ANSI C and Python.o In this role, I mentor younger engineers and managers.Chief Scientist (Nov 2016 - Feb 2022)Technical lead for implementing and validating Tandem's Control-IQ insulin dosing algorithm. This included rearchitecting the algorithm as received from the University of Virginia to fit within the memory, processing, and battery constraints of Tandem's t:slim X2 insulin pump.o Designed, implemented, and validated a numeric model of the endocrine system and integrated it with Tandem's Basal-IQ and Control-IQ insulin dosing algorithms. Used this tool to design modifications to Tandem's Control-IQ insulin dosing algorithm.o Performed the Monte-Carlo analysis for FDA to demonstrate the compatibility of Tandem's Basal-IQ and Control-IQ insulin dosing algorithms with FDA's iCGM and ACE Pump special controls.o Recruited, trained, and led Tandem’s Scientific Computing Group.o To do this work, I created proprietary analysis tools using both ANSI C and Python.Senior Director/Director (May 2008-Nov 2016)o Recruited, trained, and led Tandem's embedded software team.o Recruited, trained, and led Tandem's software test team.o Wrote all of Tandem's software process documents.o Wrote all of the t:slim software requirements, architecture, and design documents.o Architected the embedded software for Tandem's t:slim insulin pump.o Wrote about 20% of the embedded t:slim software (ANSI C for ARM Cortex, MSP430).o Wrote most of the software requirements and design specifications for Tandem's cloud-based t:connect therapy management system.o Managed the overseas outsourcing of various software verification activities.o Created an intern program. Show less