Battery Product Design Engineer

Meta•Redmond, WA

7d•$173,000 - $245,000

About The Position

Meta Reality Labs is seeking a Battery Product Design Engineer to lead the end-to-end design and integration of battery systems for next-generation virtual and augmented reality devices, including headsets, wearables, and smart glasses. In this role, you will own the technical strategy and execution for battery cell selection, pack architecture, and safety system design across Meta's Reality Labs hardware portfolio, driving innovations in energy density, thermal management, and mechanical integration within the highly constrained form factors of consumer wearable devices.

Requirements

8+ years of experience in battery pack design and product engineering for consumer electronics, wearables, or portable devices, including cell selection, pack architecture, and protection system design
Experience characterizing lithium-ion cell electrochemical performance, degradation behavior, and abuse response, and applying those findings to product design decisions
Experience leading battery system validation programs including electrical, mechanical, thermal, and safety testing against consumer electronics regulatory standards
Experience driving cross-functional battery integration programs across mechanical, electrical, thermal, and manufacturing engineering teams from early concept through mass production
Experience communicating battery system design decisions, trade-offs, and risk assessments in writing to both engineering and non-engineering stakeholders

Nice To Haves

Familiarity with battery management system IC integration, protection circuit design, and fuel gauge configuration in space-constrained consumer hardware
Background in battery safety standards and regulatory certification processes for consumer electronics, including UN 38.3, IEC 62133, or UL 2054
Experience with thermal modeling and simulation tools applied to battery pack thermal management in wearable or handheld devices
Experience with emerging cell chemistries or form factors such as solid-state, semi-solid, or prismatic cells relevant to wearable device applications

Responsibilities

Define and own the battery pack architecture and system-level design strategy for VR/AR headsets and wearable devices, including cell selection, pack topology, protection circuitry, and mechanical integration
Lead cell evaluation and qualification programs — characterize electrochemical performance, abuse tolerance, cycle life, and calendar aging across candidate cell chemistries and form factors
Drive cross-functional execution with mechanical, electrical, thermal, firmware, and safety engineering teams to integrate battery systems into wearable product designs from concept through mass production
Establish and own battery system requirements — energy capacity, power delivery, thermal limits, swelling tolerances, and safety thresholds — and ensure traceability through design validation
Lead design failure mode and effects analysis for battery packs and protection systems, and own resolution of safety-critical design risks across the product development cycle
Collaborate with contract manufacturers and cell suppliers to define manufacturing process requirements, incoming quality controls, and production test specifications for battery pack assembly
Develop and execute battery validation plans including electrical characterization, mechanical abuse, thermal runaway propagation, and regulatory compliance testing for consumer electronics standards
Translate field reliability data and failure analysis findings into design improvements and feed insights back into next-generation battery product architecture
Shape long-term battery technology roadmaps by evaluating emerging cell chemistries, form factors, and packaging innovations relevant to wearable and spatial computing devices
Mentor other engineers on battery design methodology, raise the technical bar across the team, and influence engineering direction at the organizational level