Flask
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 conditions
High level of proficiency in Python
MS Software
Demonstrate basic knowledge of C, C, C#, JavaScript, PHP, HTML/CSS, Markdown, Batch Scripting, pyscript
Brainstorm, communicate, and implement strategies for workplace efficiency
Participate well in a team environmentAnalog/Digital/Microwave Circuit Design
Microcontroller interface to sensors, comm, hardware
Problem-Solving
Active Listening
Written Communication
Python Software Proficiency
Excellent Communication
Self-starter
Public Speaking
Mentoring
Test Automation
Test platforms
Test Design
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
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