EV Flex Circuit Design Release Engineer

CelLink; San Carlos (CA); On-site; USD 110,000 - 160,000; Full time

Job summary

CelLink is seeking a DRE to design, develop, and execute flex circuit products from concept to development in San Carlos, CA. You will focus on battery interconnects, cell connections, and pack architecture to optimize EV and energy storage performance.

Responsibilities include modeling current collector assemblies, selecting termination methods for BMS/PCBA, defining requirements, building prototypes, and leading design reviews with DFMEAs and APQP documentation.

Qualifications

• Bachelor's degree in materials science, EE, ME, physics, or equivalent.
• 3–6 years owning designs from concept to production.
• Understand Li-Ion battery performance in pouch, prismatic, and cylindrical formats.
• Experience with simulation (FEA/CFD) analysis and interpretation preferred.
• Experience with cell connection manufacturing processes (laser-welding, ribbon/wire bonding, ultrasonic welding, resistance welding).
• Knowledge of mechanical, electrical, and thermal properties of conductors and insulators.
• Ability to size busbars with simulations and 1D joule heating calculations.
• Experience with electrical interfaces, joints, and connection methods.
• Knowledge of pack architecture and battery sizing.

Responsibilities

• Direct creation of 3D models and 2D drawings of current collector assemblies, battery interconnects, and voltage sense harnesses.
• Select termination options for connecting to BMS/PCBA (welded, crimped, soldered, ZIF, etc).
• Define requirements of flex circuit products based on internal, customer, and regulatory system-level requirements.
• Build prototype circuits (hands-on) and support launch activities.
• Lead design reviews and DFM analysis.
• DVP&R creation and execution to validate products along with DFMEAs and APQP documentation.
• Develop processes, designs, and material combinations to enhance CelLink's flexible circuits under various usage cases.

Skills

Battery interconnects

FEA/CFD simulation

Joule heating calculations

DFM analysis

Electrical interface design

Pack architecture knowledge

Busbar sizing

Welding processes

Project ownership

Education

Bachelor's degree in materials science/EE/ME/physics

Tools

SolidWorks

Altium

Job description

CelLink is seeking a DRE to design, develop, and execute flex circuit products from concept to development in San Carlos, CA. You will focus on battery interconnects, cell connections, and pack architecture to optimize EV and energy storage performance.

Responsibilities include modeling current collector assemblies, selecting termination methods for BMS/PCBA, defining requirements, building prototypes, and leading design reviews with DFMEAs and APQP documentation.