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Senior Prototype Engineer

42dot


Job Location:

San Francisco, CA - USA

Monthly Salary: $ 167000 - 230840
Posted: 22 August 2026 (10 hours ago)
Application Deadline: 19 November 2026
Vacancies: 1 Vacancy

Job Summary

We are looking for the best


About Us

42dot is a mobility AI company committed to solving mobility challenges with software and AI. As the Global Software Center of Hyundai Motor Group 42dot pioneers the future of mobility by advancing the development of software-defined vehicles.

We develop safety-first user-centric software-defined vehicle technologies that deliver the latest performance through continuous updates like smartphones. By advancing software and AI technology 42dot envisions a world where everything is connected and moves autonomously through a self-managing urban transportation operating system.

About the Role

42dot is seeking a highly adaptive Senior Prototype Design Engineer to serve as the Prototype Engineer for our Advanced Product Experience design. This is a high-impact role designed for a T-shaped professional who thrives in a fast-paced environment and can seamlessly bridge the gap between Industrial Design Mechanical Design and UX Design.

You will be responsible for transforming abstract concepts into high-fidelity testable prototypes that validate feasibility and accelerate decision-making for future-forward vehicle experiences. You are not just a designer; you are a builder who can adapt to new skills rapidly to meet the evolving needs of autonomous driving and intelligent mobility.

Key Responsibilities:

Multidisciplinary Innovation

  • Prototype Engineer: Act as a rapid execution hub adapting to new technologies and tools at high speed to maintain a fast-paced iteration cycle.

  • Cross-Functional Integration: Merge Industrial Design (ID) and Mechanical Design (MD) with digital UX to create cohesive in-vehicle interaction systems.

  • Hardware-Software Convergence: Develop and iterate on physical-digital touchpoints such as haptic controllers steering wheel interfaces and integrated displays - as well as experimental hybrid concepts.

Rapid Prototyping & Execution

  • High-Fidelity Modeling: Utilize Figma Protopie and vibe coding techniques to build interactive digital flows and interaction models.

  • Physical Prototyping: Use 3D printing and CAD modeling to test ergonomics and tactile feel. We are strictly tool-agnostic; we prioritize your ability to master and adapt to new software over expertise in specific platforms like SolidWorks.

  • System Validation: Collaborate with software engineering to test interaction models in-vehicle ensuring prototypes clarify user journeys and architectural feasibility.

Strategic Alignment & Demos

  • Leadership Demos: Build and maintain compelling prototypes for high-stakes leadership reviews customer clinics and international demo sessions.

  • Platform Thinking: Develop reusable prototyping patterns and workflows that can be scaled across various vehicle programs.

Qualifications

Minimum Requirements

  • Education: Bachelors or Masters in Mechanical Engineering Industrial Design HCI or a related technical field.

  • Experience: 6 years of professional experience in product design engineering or rapid prototyping.

  • Expert Toolset: Proficiency in Figma Protopie vibe coding Arduino and advanced proficiency in industry-standard CAD tools.

  • Design Versatility: Proven track record in Industrial Design (ID) Mechanical Design (MD) and UX Design.

Core Competencies

  • Adaptability: Exceptional ability to learn new skills tools and engineering principles on the fly.

  • Hands-on Engineering: Skilled in hardware integration encompassing sensors actuators and Arduino-based electronic prototypes

  • Problem Solving: Ability to translate user research insights into actionable high-craft physical and digital solutions.

  • Hands-on Fabrication: Proficient in physical assembly disassembly soldering and general handyman-style building skills to create and repair physical prototypes.

Preferred Skills

  • Experience with 3D modeling/CAD

  • Familiarity with automotive HMI or ADAS interaction models.

  • Background in rapid hardware prototyping (Arduino Raspberry Pi or custom electronics).


Travel

  • This role involves periodic travel including international trips to South Korea approximately 10-20% of the time.

Compensation

  • $167000 to $230840


Additional Information:

  • In accordance with fair hiring practices do not include any personal information unrelated to your job qualifications (e.g. Social Security Number family relations marital status age photo physical condition place of birth etc.) in your resume.

  • All documents must be submitted in PDF format and under 30MB in size.

  • If you experience issues uploading your resume please send it along with the job posting URL to

  • We strongly encourage applications from U.S. veterans and candidates eligible for employment preference under applicable laws.

  • Qualified individuals with disabilities are encouraged to apply and will receive consideration under the Americans with Disabilities Act (ADA).

  • 42dot does not accept unsolicited resumes and will not pay fees for any such submissions. Equal Opportunity Statement

  • 42dot is an Equal Opportunity Employer. We celebrate diversity and are committed to creating an inclusive environment for all employees regardless of race color religion sex sexual orientation gender identity national origin age disability or veteran status.

Please review the following information before applying.


Required Experience:

Senior IC


About Company

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