Summary
Overview
Work History
Education
Skills
Accomplishments
Software
Quote
Timeline
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Larry Marshall

Larry Marshall

BS:EE - Python Developer
Bloomington,IN

Summary

Engineer with 2 years experience in Power Systems R&D as an undergraduate researcher for CURENT, 5 years experience electrical engineering in the field, with 3 as an electronics and PCB Tester Design Engineer, and 1.5 years as an Advanced Battery Test & Evaluation Engineer, 6 years experience in web-based full-stack applications development (concurrent with above), and a veteran having served 8 years (4/4) in the USAF. Skills of note include rapid development/deployment of client-defined applications in production/R&D environments, efficient and automated data pipeline planning, implementation, and testing, from data creation in any file format, data cleaning and standardization, aggregation, categorization, filtering and distribution, all the way through to server/cloud-based database storage, complex circuits analysis and design, efficient algorithm selection, design, and/or utilization, advanced testing methodology development and implementation related to electrical, thermal, environmental, chemical, physical and many more client-driven, constantly evolving industry needs and requirements.

Overview

8
8
years of professional experience
6
6
years of post-secondary education
8
8

Programming Languages

6
6

Years Python Experience

4
4

Active Duty USAF

Work History

Member - Engineer

M&M BroTech
New Salisbury, IN
01.2022 - Current
  • Develop Python Applications
  • Write tests for existing Python apps using pytest (and related)
  • Develop for web (JavaScript, Python)
  • Design Front/Back-End (UX-Driven Design)
  • Implement and||Integrate RESTful (or other) APIs
  • Develop cross-platform software
  • Develop PWA for on and offline user-experience
  • Recommend &|| implement data workflow design
  • Automate Software/Hardware Test
  • Optimize current processes (engineering, administrative, and more)
  • Design electrical circuits meeting required criteria
  • Design &|| Implement electrical test related to hardware, comms, chemistry, off-gassing, performance, abusive, et al.
  • Consult on BMS: Design/Comm/Algorithms/Best Practices
  • Integrate comm-protocol (CAN, Bluetooth, RS***, et al.) with software &|| hardware
  • Consult &|| train &|| implement test-automation using hardware-specific skillset related to advanced battery test (i.e., NI hardware, Maccor, Neware, Arbin)
  • Rapid MVP to production/deployment ready (hardware &|| software)

Test & Evaluation Electrical Engineer

The Battery Innovation Center
Newberry, IN
07.2021 - Current
  • Assessed budget & resource allocation, enacting plan to drive down excessive costs by taking on the responsibilities of 2 engineering contractors, saving the company $160/hr over the course of 1 year at full-time rates: $294,400 total as of December 31, 2022, assuming 2 weeks vacation and 14 holidays not paid by company (paid by contracting firm)
  • Automated the boring stuff to accomplish the above bullet-point (data-related: conversion, aggregation, distribution, storage, and reporting-related: visualization output as HTML, PNG, SVG, PDF, Excel, Pptx, docx) without breaking a sweat (about 4 months)
  • Implement developer-facing Python APIs to drive rapid-development of software from prototype to MVP & beyond, allowing for painless on-the-fly data analysis, real-time metrics and traceability from several concurrent test-automation machines concurrently, and I even added module-level decorators to help log every time my classes and methods were used (helps with review!)
  • Collaborated with clients to interface with battery management systems using known, unknown &|| proprietary communications protocols, allowing for measurement-derived data to coincide with BMS-reported values, with serves a variety of purposes
  • Leverage the convenient Python libraries and APIs to easily communicate with a variety of serial, differential, &|| wireless communications protocols (CAN, Bluetooth, Ethernet, USB, et al.) to affect control of microcontroller-based measurement-devices, test-automation equipment, and more
  • Volunteered to speak at 2 events, where stakeholders and participants include small/large OEMs, advanced ESS & BMS designers, battery test systems designers, chemists, EEs, and more to represent and relay the current state of advanced ESS testing and related technology
  • Designed performance &|| abusive tests to affect customer testing intent, relying on constant feedback with PoCs to deliver data-driven insights
  • Maintain effective, collaborative relationships with clients, suppliers, and peers in my field to ensure diversity of experience and opinion
  • Developed electrical products by studying customer requirements and researching and testing manufacturing and assembly methods and materials.
  • Improved testing processes by designing and modifying existing hardware, software, and components and soliciting feedback from technicians.
  • Designed and wrote proposal for grant to fund advanced ESS testing in pursuit of a standardized approach to fire-safety and ESS-related thermal propagation mitigation techniques, winning $6,000,000+ in funding to the company (a designated non-profit)
  • More projects and details upon request!

Senior Specialist - Tester Design

Denso
Maryville, TN
01.2018 - 07.2021
  • Lead in the design, development, and implementation of a variety of user-facing full-stack applications
  • Develop, package and train on several in-house, DENSO Python packages.
  • Design, acquire and maintain tester hardware and software (C++) performing all types of electrical/data (CAN, etc..) inspections./li>
  • Oversee the efficient use of production project budgets ranging from $2,000,000 - $6,000,000

Undergraduate Researcher

University Of Tennessee At Knoxville
Knoxville, TN
05.2017 - 12.2018
  • Researched and contributed to the Smart Home Energy Management system (SHEMS)
  • Affected real-time load-control using pricing data queried from nyISO a publicly available API and used simulations to estimate cost-savings to the user, and a multitude of potential benefits to the distributer
  • Implemented greater user-control with using a web-based, UX-friendly application, intended to be residential-user facing
  • Eliminated manual control of loads by hacking signals from remote which controlled load state using Python, a RaspberryPi, and a transceiver, then upon integrating comm with the transceiver and the web-app's back-end (using PHP and NodeJS), we exposed control to the UI. The benefit of this was enormous; feel free to ask me why!

Munitions Systems Journeyman

United States Air Force
Hill Air Force Base, UT
03.2007 - 03.2011
  • Performed serviceability inspections on the most cutting-edge bombs, missiles, and rockets in the Air Force's inventory
  • Maintained and upgraded advanced munitions systems and locations for maximum impact
  • Coordinated 4K munitions deliveries for two squadrons of F-16's in direct support of Operation Iraqi Freedom
  • Implemented essential software accountability programs to accurately track and delivery mission critical munitions
  • Assisted in 21.1K munitions deliveries to aircraft supporting over 19K missions
  • Trained personnel on specific safety requirements and testing and inspecting procedures for munitions and related systems
  • Continued to learn throughout active duty term, preparing for a future degree program

Education

Bachelor of Science - Electrical Engineering

University of Tennessee
Knoxville, TN
01.2015 - 12.2018

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Community College of the Air Force, Military
01.2007 - 12.2012

Skills

Perform exceptionally well under stressful and time-sensitive conditionsundefined

Accomplishments

  • Graduated Summa Cum Laude at 3.86
  • Implemented advanced power systems algorithm to optimally determine on-line protection schemes for distribution networks in Excel (Yuck!)
  • Hacked wireless devices to affect load-control in a demand-response environment using Python, NodeJS, PHP, and a RaspberryPi running Debian
  • Developed and deplored 8 applications to Production environments
  • Automated enough boring stuff to save $246,000/year within 3 months of start date
  • Designed tests, developed proposal and assisted in winning $6,000,000 in state-matched funding for my company to enhance advanced ESS fire mitigation methodologies

Software

Flask

Django

Pandas

Polars

Numpy

Dask

Pyspark

NpTDMS

FastAPI

Pydantic

Pytest

Airflow

Pyserial

Python-CAN

Cantools

API

SDK

MS

Bokeh

Holoviews

Hvplot

Dash

Ipywidgets

Streamlit

Localtunnel

Jupyter

Git

GitHub

VSCode

MicroPython

CircuitPython

Xlsxwriter

Quote

Good judgment comes from experience. Experience comes from bad judgment.
Jim Horning

Timeline

Member - Engineer

M&M BroTech
01.2022 - Current

Test & Evaluation Electrical Engineer

The Battery Innovation Center
07.2021 - Current

Senior Specialist - Tester Design

Denso
01.2018 - 07.2021

Undergraduate Researcher

University Of Tennessee At Knoxville
05.2017 - 12.2018

Bachelor of Science - Electrical Engineering

University of Tennessee
01.2015 - 12.2018

Munitions Systems Journeyman

United States Air Force
03.2007 - 03.2011

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Community College of the Air Force, Military
01.2007 - 12.2012

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Larry MarshallBS:EE - Python Developer