Systems Test Engineer

Clarios • Milwaukee, WI

13d

About The Position

What you will do: The Systems Integration/Test Engineer is responsible for defining, developing, and integrating Li-Ion and/or ultra-capacitor battery systems that meet OEM and regulatory requirements for low-voltage (12V-48V) automotive applications. This role involves developing and executing the integration and testing plans to ensure compliance with the functional, performance, and safety requirements of the system. This role requires collaboration with cross-functional teams to deliver safe, reliable, and high-performance energy storage solutions. This position is ideal for candidates with a strong background in system integration and testing (right side of the V-model) of power conversion modules such as DCDCs and battery technology. How you will do it: System Integration & Interfaces: Define and manage thermal, electrical, and mechanical interfaces between the battery pack, BMS, and vehicle powertrain. Work closely with software, mechanical, and electrical teams to optimize system-level interactions. Support Hardware-in-the-Loop (HiL) and Model-in-the-Loop (MiL) testing to validate system integration. System Integration & Verification: Define electrical, thermal, and mechanical interfaces between the battery pack, ultra-capacitor system, BMS, and vehicle powertrain. Collaborate with cross-functional teams to ensure seamless system integration and interface compatibility. Lead the development of Design Verification Plans (DVPs), ensuring comprehensive validation coverage for system performance, durability, and compliance with OEM and regulatory standards. Document verification coverage of all requirements with traceability in the requirements management tool. Participate in system-level validation, durability testing, and failure mode analysis. Support Hardware-in-the-Loop (HiL), Model-in-the-Loop (MiL), and system-level validation to ensure robust performance. Assist in aging studies, thermal modeling, and electrical load analysis for predictive performance assessments. Risk Management & Documentation: Support system-level DFMEA, ensuring proper alignment with subsystem and component-level DFMEAs. Support Process FMEA, ensuring proper alignment with End-of-Line testing. Cross-functional Collaboration & Leadership: Act as a technical liaison between systems, mechanical, electrical, thermal, and software engineering teams as it pertains to integration and testing.

Requirements

• BS/MS in Electrical, Mechanical, Systems Engineering, or related field (or equivalent experience).
• 5+ years of experience in automotive battery systems, powertrain, or electrification projects.
• Proficiency in requirements management tools (Jama, DOORS), simulation tools (MATLAB, Simulink), and validation frameworks.

Nice To Haves

• OEM/Tier 1 experience in automotive battery systems is preferred.

Responsibilities

• Define and manage thermal, electrical, and mechanical interfaces between the battery pack, BMS, and vehicle powertrain.
• Work closely with software, mechanical, and electrical teams to optimize system-level interactions.
• Support Hardware-in-the-Loop (HiL) and Model-in-the-Loop (MiL) testing to validate system integration.
• Define electrical, thermal, and mechanical interfaces between the battery pack, ultra-capacitor system, BMS, and vehicle powertrain.
• Collaborate with cross-functional teams to ensure seamless system integration and interface compatibility.
• Lead the development of Design Verification Plans (DVPs), ensuring comprehensive validation coverage for system performance, durability, and compliance with OEM and regulatory standards.
• Document verification coverage of all requirements with traceability in the requirements management tool.
• Participate in system-level validation, durability testing, and failure mode analysis.
• Support Hardware-in-the-Loop (HiL), Model-in-the-Loop (MiL), and system-level validation to ensure robust performance.
• Assist in aging studies, thermal modeling, and electrical load analysis for predictive performance assessments.
• Support system-level DFMEA, ensuring proper alignment with subsystem and component-level DFMEAs.
• Support Process FMEA, ensuring proper alignment with End-of-Line testing.
• Act as a technical liaison between systems, mechanical, electrical, thermal, and software engineering teams as it pertains to integration and testing.

Benefits

• Medical, dental and vision care coverage and a 401(k) savings plan with company matching – all starting on date of hire
• Tuition reimbursement, perks, and discounts
• Parental and caregiver leave programs
• All the usual benefits such as paid time off, flexible spending, short-and long-term disability, basic life insurance, business travel insurance, Employee Assistance Program, and domestic partner benefits
• Global market strength and worldwide market share leadership
• HQ location earns LEED certification for sustainability plus a full-service cafeteria and workout facility
• Clarios has been recognized as one of 2025's Most Ethical Companies by Ethisphere. This prestigious recognition marks the third consecutive year Clarios has received this distinction.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees