Mechanical Engineer, Battery and Charger
Since its founding in 2015, 1X has been at the forefront of developing advanced humanoid robots designed for household use. Our mission is to create an abundant supply of labor via safe, intelligent humanoids.
We strive for excellence in all we do, solving some of the hardest problems in robotics with the world’s most talented individuals. Every part of our robots is designed and produced in-house—from motor coils to AI—reflecting our vertically integrated approach. At 1X, you’ll own real projects, be recognized for your achievements, and rewarded based on merit.
We believe the best work is done when collaborating and therefore require in-person presence in our office locations.
As we scale from research and development to full-scale manufacturing, we are seeking a Mechanical Engineer to take work on the battery and charging systems for NEO. In this role, you will design and optimize battery enclosures, thermal management systems, and charging docks to ensure safety, reliability, and scalability.
RESPONSIBILITIES
- Design and develop mechanical enclosures for battery packs and charging systems, ensuring protection, reliability, and efficient assembly.
- Implement thermal management solutions to maintain battery performance and safety under various operating conditions.
- Design charging docks and connectors with a focus on ergonomics, durability, and seamless user experience.
- Collaborate with electrical engineering teams to ensure mechanical designs meet electrical and safety requirements, including IP ratings and vibration resistance.
- Conduct design validation tests (DVT) to ensure battery enclosures and chargers meet performance and durability specifications.
- Perform finite element analysis (FEA) for structural integrity and thermal performance of battery housings and connectors.
- Optimize designs for manufacturability (DFM) and assembly (DFA) to ensure cost-effective, scalable production.
- Work with manufacturing partners to develop tooling and production processes for battery enclosures and charging systems.
- Ensure compliance with regulatory standards and certifications (e.g., UN 38.3, UL, IEC).
- Create and maintain detailed documentation, including CAD models, drawings, test plans, and assembly instructions.
- 2+ years of experience in mechanical engineering, with a focus on battery enclosures and/or charging systems.
- Proficiency with CAD tools such as SolidWorks, Fusion 360, or CATIA for creating 3D models and engineering drawings.
- Experience in thermal management for battery systems, including passive and active cooling solutions.
- Familiarity with IP ratings, shock/vibration testing, and environmental sealing techniques.
- Strong understanding of DFM/DFA principles for mid- to high-volume manufacturing.
- Experience with material selection for lightweight, durable enclosures, including plastics, metals, and composites.
- Hands-on experience conducting design validation tests and root cause analysis for mechanical failures.
- Knowledge of battery safety standards and compliance requirements for consumer products or robotics.
Preferred Qualifications
- Experience with robotics, electric vehicles, or consumer electronics.
- Familiarity with battery management systems (BMS) and charging protocols.
- Knowledge of low-volume manufacturing processes such as injection molding, vacuum casting, or sheet metal fabrication.
- Hands-on experience with custom connectors and mechanical locking mechanisms for secure charging interfaces.
- Understanding of failure modes and effects analysis (FMEA) for battery and charging systems.
We encourage you to apply even if you do not meet every single qualification.
Sunnyvale, CA
We are in the heart of the Silicon Valley in a commuter-friendly location with plenty of parking, access to 101 or 280. If you prefer public transportation, Orange Line (VTA) light rail station is across the street. Living in the Bay Area, you will have access to many activities available in its proximity from surfing in Half Moon Bay to skiing at Tahoe, wine tasting in Napa, hiking on the many trails or other sports activities on the many tennis courts, golf courses, etc.
Typical interview process
- Introductions - interviews to learn more about you and talk about 1X and the role
Interview with a member of the Talent Acquisition team
- Hiring manager / senior team member / technical interview
- Team interviews - technical interviews and deep-dives with team members. May include a take home challenge, presentation or problem-solving exercise
Technical deep-dive conversation with a team member
- Onsite interviews with team members
- Final stages - you move to the final round
Expectation management with the hiring manager
- We will conduct reference checks
- Job offer conversation
Depending on the role and your background, additional interviews may be added. You are also welcome to request additional conversations with anyone you would like to meet, but didn’t get to meet during the interview process.
We are a value driven team
These are the ideas that express our team’s culture and how we work:
Be Nice
Collaboration is our driving force. Our team creates an open, trusting environment where everyone can be their most creative.
Stay Smart
A world-changing team needs the brightest minds in every discipline. This is where people come to work, learn, and grow to their full potential.
Make History
Everything we do gets us closer to one ambitious vision: Creating an Abundant Supply of Labor using Safe, Intelligent Humanoids. We believe what we build today will impact generations.
We are an inclusive environment and value diversity of background, experiences and thought, and welcome applicants from diverse backgrounds to contribute to our mission.
We're excited to get to know you and the prospects of having you on board!