Senior Battery Design Engineer

ŌURASan Francisco, CA, United States

11 days ago

Job type

Full-time

Job description

Our mission at Oura is to empower every person to own their inner potential. Our award-winning products help our global community gain a deeper knowledge of their readiness, activity, and sleep quality by using their Oura Ring and its connected app.

We are seeking a Senior Battery Design Engineer to join our Hardware Engineering team. In this role, you will drive the design, development, and validation of advanced battery systems tailored for compact wearable devices.

Responsibilities :

Lead the design, selection, and integration of batteries into wearable products, balancing safety, form factor, energy density, and manufacturability.
Define and maintain product-level specifications for battery performance, reliability, and lifetime.
Work hands-on with prototypes and production samples to validate and optimize battery integration.

Testing, Validation & Failure Analysis :

Develop and execute rigorous test and qualification protocols across environmental, mechanical, and usage scenarios.

Partner with reliability engineering to establish lifecycle and safety test standards.

Lead root cause analysis of battery-related failures and drive corrective actions through vendors and internal teams.

Vendor & Cross-Functional Collaboration :

Collaborate with supply chain and operations teams to qualify and manage battery cell and pack vendors, with a focus on Asia-based suppliers.

Work closely with electrical, mechanical, firmware, and systems engineers to ensure seamless integration and performance.

Provide guidance to cross-functional teams on best practices for battery handling, testing, and integration.

Technology Roadmap & Strategy :

Stay ahead of emerging battery technologies and assess their applicability to Oura’s products.

Influence long-term product architecture by aligning battery capabilities with product and design requirements.

Act as Oura’s internal subject matter expert on battery chemistry, safety, and packaging trends.

Requirements :

Bachelor’s or Master’s degree in Electrical Engineering, Materials Science, Chemical Engineering, or related field.

5+ years of experience in battery design and integration for consumer electronics or similarly high-volume, compact devices.

Deep expertise in battery technologies, including chemistry, construction, safety, and packaging, with experience in Li-ion and emerging chemistries.

Hands-on experience collaborating directly with battery cell and pack vendors, particularly in Asia.

Familiarity with battery management systems (BMS), protection circuits, and system-level integration.

Demonstrated success defining and meeting battery-level and product-level reliability, safety, and lifetime goals.

Proven ability to lead failure analysis and implement corrective actions.

Excellent communication skills and ability to work effectively in cross-functional and international teams.

Benefits :

Competitive salary and equity packages

Health, dental, vision insurance, and mental health resources

An Oura Ring of your own plus employee discounts for friends & family

20 days of paid time off plus 13 paid holidays plus 8 days of flexible wellness time off

Paid sick leave and parental leave

Oura is proud to be an equal opportunity workplace. We celebrate diversity and are committed to creating an inclusive environment for all employees.

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Senior Design Engineer • San Francisco, CA, United States

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