Battery Module/Pack Engineer – Battery Systems Engineering

Fluence Energy•Houston, TX

22h•Onsite

About The Position

This role supports Fluence product supply and development by partnering hardware engineering lead on lithium-ion battery subsystem hardware, performance characterization, and verification testing. A working understanding of battery cell and module degradation is expected; however, the primary focus is battery electrical systems engineering and mass production of battery modules and testing (HV architecture, protection, BMS interfaces/communications, instrumentation, and validation) across internal teams, suppliers, and third-party labs.

Requirements

Bachelor’s degree (or higher) in Electrical Engineering, Mechanical Engineering, or equivalent
5+ years of experience developing and testing high-voltage battery systems (integration, verification, and validation)
Experience in manufacturing/industrialization of battery cells or modules (process readiness, EOL test, quality controls)
Broad technical knowledge across engineering disciplines (electrical, electronics, mechanical, thermal, materials, safety, test/validation, manufacturing)
Global mindset with experience working in an international, multi-cultural matrix environment (cross-site teams and suppliers)
Strong verbal and written communication skills (English required; Chinese is a plus), including clear technical documentation
Self-starter who is results-oriented and process-driven, with disciplined change/configuration control
Strong problem-solving skills, including structured root-cause analysis and data interpretation
Willingness to travel frequently primarily within the US

Nice To Haves

Energy storage industry experience preferred but not required

Responsibilities

Maintain in-depth knowledge of Li-ion batteries and subsystem components (cells, modules, BMS), including key electrical ratings/limits and interface requirements for energy storage products
Support as lead engineer Fluence Energy battery module manufacturing in the US, including production readiness and technical issue resolution
Drive product and process improvements at the production facility using data-driven methods (yield, cycle time, FPY) and controlled change management
Partner with production teams and equipment suppliers to identify root causes of EOL test failures and production issues (containment, corrective actions, verification)
Contribute to battery module/pack design architecture and flow requirements into manufacturable, scalable mass-production solutions; collaborate cross-functionally to deliver to schedule
Establish battery module production readiness: define equipment/station requirements, develop procedures, and set in-process and end-of-line test checkpoints
Collaborate with systems engineering to ensure battery technical characteristics (limits, fault behavior, comms) are reflected in overall energy storage system design
Manage and coordinate with battery module suppliers and subcomponent vendors on requirements, changes, and technical deliverables
Serve as the main contact for third-party lab testing of new battery equipment (e.g., protection tests, BMS communication testing, thermal validation, integration with Fluence controls, telemetry points, mechanical fit/installation)
Gather supplier data on thermal behavior of battery modules in operation and partner with enclosure design teams to size cooling solutions for key applications