About Rivet Rivet is an American company building integrated task systems — fusing hardened hardware with software, sensors, AI, and networking — for industrial workforces and defense personnel. We create capabilities that multiply the effectiveness of every individual and withstand the world’s toughest environments. We serve the people who build, operate, maintain, and defend our way of life. From technicians and engineers to first responders and service members, they embody the hard work, ingenuity, and meritocratic values that drive Western prosperity. Yet too often they are forced to rely on outdated tools that fail under modern pressures. Rivet exists to reset that priority. At Rivet, you’ll join a mission-driven team that fuses disciplines to deliver decisive outcomes where they matter most. Whether shaping our technology, strengthening our partnerships, or building our culture, every role here contributes to equipping the front lines with the modern systems they deserve. Work Authorization Requirement: Due to the nature of our business and compliance with federal regulations, all candidates must be a "U.S. Person". Upon hire, you will be required to provide documentation verifying your status as a U.S. Citizen, a lawful permanent resident, or a protected individual under 8 U.S.C. 1324b(a)(3). Summary We are seeking a Senior Product Design Engineer with a Mechanical Engineering background and 10+ years of product development experience. This role is fully on‑site in the San Francisco Bay Area and focuses on advancing mechanical concepts for next‑generation AR devices for industrial and frontline applications. Responsibilities - Support proof‑of‑concepts and specification development. - Design fixtures and experiments to validate design concepts. - Lead mechanical design for assigned product sub‑systems. - Resolve day‑to‑day production issues with effective, hands‑on solutions. - Design, build and deliver prototypes to verify design intent. - Perform thorough troubleshooting, including teardown, reassembly, and testing. - Travel 15–20% domestically and internationally to support supplier testing and EVT/DVT builds. Requirements - 8+ years of product development experience. - Proficiency in 3D CAD, preferably PTC Creo, with strong top‑down design capability. - Deep understanding of GD&T; experience with plastics, injection molding, sheet metal, and CNC processes. - Skilled in creating 2D drawings with proper tolerancing. - Experience using thermal and/or FEA simulation tools at component, module, or system level. - Familiarity with 3D printing. - Hands-on experience with design, fabrication, and assembly of prototype sub‑systems. - Strong vendor management skills, particularly for mechanical and fixture‑related deliverables. - Must be authorized to work in the U.S. Compensation may vary within the posted range based on relevant experience, skills, education, and other job-related factors. In addition to base salary, this role may be eligible for equity and other forms of compensation. Eligible employees also receive a competitive benefits package, including unlimited PTO. Rivet is an Equal Opportunity Employer. All qualified applicants will receive consideration for employment without regard to any characteristic protected by applicable law. Certain roles may require U.S. Person status, security clearance eligibility, or other requirements imposed by law or government contract.