Senior Design Engineer

SprintRay Inc.; Los Angeles (CA); On-site; USD 155,000 - 175,000; Full time

Job summary

SprintRay is seeking a Design Engineer in Los Angeles to contribute to hardware programs across the full product development lifecycle. You will design, prototype, test, and document mechanical systems under guidance from senior engineers, with a focus on delivering production-ready hardware for dental applications.

We value hands-on prototyping, CAD expertise (SolidWorks), GD&T, and strong cross-functional collaboration.

Qualifications

• 6–9 years of mechanical engineering or product development experience delivering complex hardware products to production.
• Bachelor’s degree in Mechanical Engineering or related field; Master’s preferred.
• Strong hands-on experience with prototyping and mechanical assembly.
• Advanced proficiency in CAD (SolidWorks preferred).
• Strong experience creating and reviewing GD&T-compliant drawings and tolerance analyses.
• Demonstrated experience with experiment design, validation testing, and data analysis.
• Experience with electro-mechanical systems integration.
• Solid understanding of manufacturing processes (machining, sheet metal, injection molding, additive manufacturing).
• Experience in regulated or quality-driven environments (medical, dental, or similar) is a plus.
• Strong communication skills and ability to influence technical outcomes across teams.

Responsibilities

• Own mechanical design and development of major hardware products from concept through production and sustaining.
• Lead technical trade studies, architecture decisions, and risk mitigation related to performance, reliability, cost, and schedule.
• Drive detailed CAD design, tolerance analysis, and GD&T for assigned systems.
• Design, build, and validate rapid and high-fidelity prototypes to de-risk designs early.
• Apply Design for Manufacture and Assembly (DFMA) principles to ensure scalable, high-yield production.
• Plan and execute experiments and validation testing using structured, data-driven methodologies.
• Define critical-to-quality (CTQ) requirements and acceptance criteria to support mass production.
• Develop fixtures, jigs, and test equipment to support characterization, validation, and manufacturing readiness.
• Create and maintain high-quality engineering documentation including CAD models, drawings, test reports, and specifications.
• Collaborate cross-functionally with Research, Electrical, Firmware, Manufacturing, Quality, Operations, and Supply Chain teams.
• Mentor junior engineers and contribute to design reviews, best practices, and continuous improvement.
• Support production issues, failure analysis, and post-launch design improvements.

Skills

Hands-on prototyping

Mechanical assembly

Iterative design

GD&T tolerance analysis

Communication skills

Electro-mechanical integration

Experiment design & validation

Education

Bachelor's degree in Mechanical Engineering or related field

Master's degree preferred

Tools

CAD (SolidWorks)

GD&T drawing review

Job description

Location: Los Angeles, CA

Compensation: $155,000 – $175,000 (Depending on experience)

About The Role

SprintRay’s Hardware R&D Project team develops production-ready hardware that dental professionals can rely on. Through a deeply hands-on engineering approach, we transform advanced innovation into robust, manufacturable products that perform consistently in clinical environments.

As a Design Engineer, you support the development of hardware programs by contributing to mechanical design, prototyping, testing, and documentation under the guidance of senior engineers. You work hands-on across the product development lifecycle, helping turn new concepts into validated, production-capable designs. This role is ideal for an early-career engineer looking to deepen their technical skills while gaining exposure to full product development in a fast-paced, collaborative environment.

Key Responsibilities

• Own mechanical design and development of major hardware products from concept through production and sustaining.
• Lead technical trade studies, architecture decisions, and risk mitigation related to performance, reliability, cost, and schedule.
• Drive detailed CAD design, tolerance analysis, and GD&T for assigned systems.
• Design, build, and validate rapid and high-fidelity prototypes to de-risk designs early.
• Apply Design for Manufacture and Assembly (DFMA) principles to ensure scalable, high-yield production.
• Plan and execute experiments and validation testing using structured, data-driven methodologies.
• Define critical-to-quality (CTQ) requirements and acceptance criteria to support mass production.
• Develop fixtures, jigs, and test equipment to support characterization, validation, and manufacturing readiness.
• Create and maintain high-quality engineering documentation including CAD models, drawings, test reports, and specifications.
• Collaborate cross-functionally with Research, Electrical, Firmware, Manufacturing, Quality, Operations, and Supply Chain teams.
• Mentor junior engineers and contribute to design reviews, best practices, and continuous improvement.
• Support production issues, failure analysis, and post-launch design improvements.
  
  

Required Qualifications

• 6–9 years of mechanical engineering or product development experience delivering complex hardware products to production.
• Bachelor’s degree in Mechanical Engineering or related field (Master’s preferred).
• Strong hands-on experience with prototyping, mechanical assembly, and iterative design.
• Advanced proficiency in CAD (SolidWorks preferred).
• Strong experience creating and reviewing GD&T-compliant drawings and tolerance analyses.
• Demonstrated experience with experiment design, validation testing, and data analysis.
• Experience with electro-mechanical systems integration.
• Solid understanding of manufacturing processes (machining, sheet metal, injection molding, additive manufacturing).
• Experience in regulated or quality-driven environments (medical, dental, or similar) is a plus.
• Strong communication skills and ability to influence technical outcomes across teams.
  
  

Employment Type

Full-time, Onsite

About SprintRay

SprintRay is rewriting the rules of dentistry with technology that’s smart, fast, and designed to make life easier for dental professionals. Since 2014, we’ve been on a mission to deliver the most advanced 3D printing solutions in the industry—combining hardware, software, and materials into one seamless ecosystem.

But what really makes SprintRay different is our people. We’re a bold, global team of innovators, problem-solvers, and doers who thrive on pushing boundaries and challenging the status quo. Every product we create is driven by a simple goal: help dentists spend less time on repetitive tasks and more time changing patients’ lives.

Our culture is entrepreneurial, collaborative, and fueled by curiosity. We celebrate diverse perspectives and believe the best ideas can come from anywhere. Whether we’re building next-generation AI tools, designing new materials, or supporting our customers on the front lines, we’re united by the same passion—transforming digital dentistry and having fun while we do it.

At SprintRay, the future of dentistry is being printed today. Want to be part of it?

Equal Opportunity Employer

SprintRay is proud to be an equal opportunity employer. We celebrate diversity and are committed to creating an inclusive environment for all employees. We do not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, veteran, or disability status.

To All Recruitment Agencies:

Without a written agreement signed by an officer of SprintRay: a) SprintRay does not accept resumes from recruiting agencies, headhunters, or any other party expecting payment in the event SprintRay speaks with or hires a candidate from such submitted resume; b) SprintRay is not responsible for any fees related to unsolicited resumes or related Terms of Service, and c) Unsolicited resumes received will be considered the property of SprintRay and will be processed accordingly.

Accessibility

If you need a reasonable accommodation during the application or interview process, please contact us at [e-mail].