Joshua Gray
Columbus,IN
Summary
High-impact Hardware and Software Test Engineer with over a decade of experience specializing in embedded systems, automated test framework development, and Hardware-in-the-Loop (HIL) systems. Proven track record in architecting Python-based automated tests for high-voltage battery systems and diagnostic tools, driving efficiency and reliability. Expertise in bridging the gap between firmware design and hardware validation ensures optimal system performance and quality assurance. Committed to leveraging technical skills to enhance product development and contribute to innovative solutions in the engineering field.
Overview
6
6
years of professional experience
Work History
Hardware & Software Test Engineer
ACCELERA BY CUMMINS
Columbus, IN
10.2025 - Current
- Diagnostic Tool Architecture: Develop and maintain hardware resources for Accelera’s Diagnostic Service Tool, ensuring seamless integration between hardware and service software.
- Automated Testing Leadership: Guide Unit, Regression, and UAT protocols to improve process efficiency and early detection of critical firmware/software bugs.
- End-to-End Defect Management: Manage the full bug-fix lifecycle from initial report through final release, collaborating with both users and developers for swift resolutions of complex issues and summarizing reported issues into technical bug fixes, and tool requirements.
Senior Manufacturing Test Engineer
ACCELERA BY CUMMINS
Columbus, IN
08.2022 - 10.2025
- HIL & Automation Development: Engineered automated test equipment (IPV/EOL) for traction inverters and high-voltage batteries using Python, LabView, and CAN tools.
- Quality Monitoring: Created SQL and PowerBI reporting tools to track Key Quality Indicators (KQI), delivering timely updates to stakeholders on manufacturing health.
- Subject Matter Expertise: Consulted with global manufacturing plants as an SME to optimize existing test processes and equipment standards.
- Mentored junior engineers in troubleshooting techniques and best practices for test procedures.
- Collaborated with cross-functional teams to identify root causes of failures and drive corrective actions.
- Standardized documentation processes for test results, ensuring consistency and traceability across projects.
Test Engineer
SGS NORTH AMERICA INC.
Columbus, IN
05.2021 - 08.2022
- HIL Simulation: Integrated Simulink models with test cells and improved custom build processes using MATLAB Real-Time Coder for complex system validation.
- Advanced Test Cell Design: Designed a Motoring Dynamometer Test Cell for a major BEV manufacturer to replicate real-world drive cycles, identifying early-life failures.
- Compliance Engineering: Developed the capability to perform NHTSA verification testing for customers
Testing Support
SGS NORTH AMERICA INC.
Columbus, IN
12.2019 - 05.2021
- Linux Automation: Authored Python & Shell scripts to automate customer testing cycles inside Linux environments.
- Executed Testing on Customer Articles across a variety of Environments ( Component Stands, Climate Cells, Emissions Compliance Testing)
- Developed automated process, using Git, to maintain standard stand & cell configurations, and branches for customer specific customized configurations
- Self-motivated, with a strong sense of personal responsibility.
Education
Bachelor of Science - Mechanical Engineering Technology
Indiana State University
Terre Haute, IN05-2021
Skills
- Languages & Automation: Python (cantools, python-can, pytest), LabView, SQL, MATLAB/Simulink
- Testing Frameworks: HIL Testing, Unit, Regression, User Acceptance Testing (UAT), Black box & White box testing
- Hardware & Protocols: Vector Tools (CANalyzer, CANoe), UDS, CANopen, J1939, RS-232, Linux
- Quality & Management: Bug Fix, and Progress Tracking (JIRA), Quality & Technically Aimed Reporting
- Agile Development Cycle - Delivering verified features in high change environment
Timeline
Hardware & Software Test Engineer
ACCELERA BY CUMMINS
10.2025 - Current
Senior Manufacturing Test Engineer
ACCELERA BY CUMMINS
08.2022 - 10.2025
Test Engineer
SGS NORTH AMERICA INC.
05.2021 - 08.2022
Testing Support
SGS NORTH AMERICA INC.
12.2019 - 05.2021
Bachelor of Science - Mechanical Engineering Technology
Indiana State University
TOYOTA COVER LETTER
Dear Hiring Manager,
With a decade of experience in testing, I am excited to apply for the Automated Software Test Engineer position at Toyota Material Handling. Having spent my career in Columbus, IN, supporting industry leaders such as Cummins, SGS, and Toyota, I have developed a deep respect for the engineering excellence Toyota represents and the dedication to quality and customer satisfaction.
My experience in the industry aligns directly with your positions requirements:
- Automated Frameworks: I have extensive experience developing Python-based automated tests and utilizing CANalyzer/CANoe to guarantee system performance.
- HIL Expertise: I specialized in Simulink improvements to Cummins' CyberApps Test Cell HIL platform, and developing HIL features for Manufacturing and Engineering Validation of Components and Assemblies.
- Cross-Functional Collaboration: I am adept at partnering with firmware developers, users, and technical experts to track defects from report to release, guide conversations to uncover critical details and next steps, and
I am eager to bring my expertise in embedded Linux environments and automated test frameworks to the Toyota team to help ensure the optimal performance of your next generation of material handling solutions. Thank you for your time and consideration.
Best regards,
Joshua Gray