Senior Product Design Engineer

Lumicity; San Francisco (CA); On-site; USD 140,000 - 200,000; Full time

Job summary

Lumicity in San Francisco is seeking an experienced mechanical engineer to own architecture for key research initiatives or full product families. You will lead critical component design, ensuring robust end-to-end development and integration across high‑volume consumer electronics.

The role requires 4+ years in mechanical design and a track record of delivering breakthrough products, with ability to influence strategy, mentor teammates, and develop technical roadmaps that align with company

Qualifications

• Bachelor's degree in Mechanical Engineering or related field; equivalent industry experience.
• 4+ years of mechanical design experience delivering high-volume products or complex electromechanical systems.
• Proven ability to lead technical direction and influence cross‑functional teams.
• Experience across full product development lifecycle from architecture to manufacturing.
• Ability to develop and drive technical roadmaps and organizational strategies.

Responsibilities

• Own the mechanical architecture for key initiatives or product families.
• Lead design of critical components and ensure end‑to‑end integration.
• Identify and solve long-term, ambiguous problems impacting strategy.
• Mentor engineers, recruit, and elevate the engineering team.
• Drive engineering craft, raise product quality, and establish best practices.

Skills

Mechanical design

Cross-functional collaboration

Mentoring engineers

Technical roadmaps

AI tools integration

Education

Bachelor’s degree in Mechanical Engineering

MS or PhD in Mechanical Engineering

Tools

NX

Job description

We’re building hardware that doesn’t exist yet, and we’re looking for an engineer who thrives on first-principles thinking and experience shipping some of the best consumer electronics products in the world.

• Own the mechanical architecture for key research initiatives and/or entire products or product families. Lead the design of critical components and full systems, solving technical problems that few others in the organization can, and ensuring robust end-to-end product development and integration
• Proactively identify and solve critical, long-term, and often ambiguous problems that impact strategic objectives. Influence key leaders and functional strategy, and participate in the development of the organization's technical roadmap
• Act as a recognized and thought leader, sought out for advice across multiple teams. Create and leverage formal networks with key internal and external contacts. Recruit, onboard, and serve as a mentor to other engineers, elevating the entire team
• Drive investments in engineering craft, advocate for higher product quality and efficiency, and establish new best practices to resolve business-critical challenges
• Bring clarity to undefined problems and develop novel approaches for issues with unclear or variable factors. Exercise judgment to drive comprehensive solutions that align with broader organizational goals and future implications

Minimum Qualifications:

• Bachelor’s degree in Mechanical Engineering or a related field and/or equivalent industry experience
• 4+ years of industry experience in mechanical design, with a track record of delivering breakthrough products and technologies for high‑volume commercial products and/or designing complex electromechanical systems in a research/prototype environment
• Recognized expertise in a relevant technical domain and a history of solving novel, loosely defined technical problems
• Track record of driving technical direction, mentoring engineers and influencing the strategy of cross-functional teams
• Demonstrated expertise across the full product development lifecycle, from architecture to high-volume manufacturing
• Experience creating and driving technical roadmaps and contributing to organizational-level strategy

Preferred Qualifications:

• 6+ years of product design and development experience of handheld and/or wearable electronics for high volume manufacturing, including full systems ownership
• MS or PhD in Mechanical Engineering
• Experience designing handheld and wearable electronics for high volume manufacturing
• Experience with NX
• Experience with products cosmetic surface treatments and interfacing with industrial design teams
• Professional working proficiency in Mandarin and/or Cantonese skills preferred due to partnerships with external clients
• Experience designing for human factors
• Demonstrated experience to integrate AI tools to optimize/redesign workflows and drive measurable impact (e.g., efficiency gains, quality improvements)
• Experience adhering to and implementing responsible, ethical AI practices (e.g., risk assessment, bias mitigation, quality and accuracy reviews)
• Demonstrated ongoing AI skill development (e.g., prompt/context engineering, agent orchestration) and staying current with emerging AI technologies