12v System Design Engineer

Stellantis•Auburn Hills, MI

About The Position

The 12V Systems Design Engineer is a key contributor within the Product Development & Technology (PDT) organization, operating in the Electrified Hardware Engineering (EHE) and Hardware Engineering (HWE) perimeter. The role supports the design, integration, validation, and vehicle-level performance of the 12V Energy Provider subsystem. This position is responsible for defining robust, cost-effective, and innovative 12V electrical system solutions by ensuring alignment between vehicle needs, system and subsystem strategies, and architectural constraints. The engineer works cross-functionally on system architecture, requirements definition, component sizing, vehicle testing, diagnostics, and validation to ensure correct vehicle behavior and customer satisfaction. Hands-on experience with vehicle electrical systems, communication networks, testing tools, and data analysis is essential.

Requirements

Bachelor’s degree in Electrical Engineering or a related discipline
A minimum of 5 years of relevant experience.
Experience in system engineering, electrical architecture, or vehicle integration
Hands-on experience with vehicle-level electrical testing and troubleshooting
12V electrical power systems and energy storage experience
Root cause analysis and risk assessment experience

Nice To Haves

Battery and alternator sizing
Ignition Off Draw (IOD) and vehicle sleep behavior
DC/DC converters, DC/AC inverters, and other power electronics
CAN & LIN communication and diagnostics
Functional analysis, requirements management, and validation strategy
CANoe, CANalyzer
PICO Scope and electrical measurement equipment
Vehicle data logging and test instrumentation
Microsoft Office (Teams, Outlook, Excel, Visio)

Responsibilities

Gather, analyze, and consolidate stakeholder inputs from vehicle systems and 12V sub-domains
Identify and manage environmental, operational, and architectural constraints
Define and manage upper-level 12V system requirements, constraints, and use cases
Define functional system architectures aligned with Quality, Cost, Timing, and Performance (QCTP) objectives
Perform functional decomposition and allocation across hardware, software, and processes
Provide system-level synthesis of system behavior, operating strategies, and vehicle interactions
Perform battery sizing calculations based on vehicle load profiles, duty cycles, and customer usage scenarios
Perform alternator sizing and capability analysis to ensure adequate power generation under all operating conditions
Conduct Ignition Off Draw (IOD) and parasitic load analysis, including network and module sleep behavior
Support definition and optimization of charging and power management strategies
Define high-level functional and technical requirements for hardware, software, and validation teams
Ensure full requirements traceability throughout the development lifecycle
Ensure clear understanding, alignment, and acceptance of system requirements across stakeholders
Support diagnostics and functional behavior definition related to the 12V system
Define and execute system-level and vehicle-level validation plans for the 12V electrical system
Plan, set up, and conduct vehicle tests covering: 12V lead-acid and future lithium battery systems, Alternators and charging systems, 120V / 230V DC/AC inverters, Battery sensors and intelligent power components, LIN- and CAN-based loads and control modules
Execute testing under various environmental and operating conditions (hot, cold, key on/off, high load, charging, sleep modes)
Review, approve, and document system validation and test results
Ensure system strategies are correctly implemented and validated to achieve expected vehicle behavior
Use CANoe and CANalyzer to analyze CAN and LIN communication, signal behavior, and diagnostics
Validate network behavior during key-on, key-off, and sleep transitions
Diagnose LIN communication issues including wake-up behavior, timeouts, and configuration issues
Use PICO Scope and oscilloscopes to analyze voltage, current, ripple, transients, and communication signals
Perform root cause analysis of electrical, communication, and sleep current issues
Track, manage, and resolve issues and deviations across the development lifecycle
Work closely with systems, software, hardware, and validation teams to align architecture and requirements
Support supplier coordination for batteries, alternators, inverters, sensors, and LIN/CAN-controlled components
Participate in design reviews, technical reviews, issue resolution meetings, and program milestones
Create and maintain technical documentation including system analyses, requirements, test plans, and reports
Support compliance with internal development processes, system engineering methodologies, and automotive standards
Contribute to continuous improvement of system engineering and validation processes