Senior Engineer, Mechanical Engineering- CA

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Full Time San Diego, CA, US

30+ days ago Requisition

Salary Range: $ To $ Annually

About Synchron

Synchron’s vision is to build non-surgical brain–computer interfaces at global scale that protect the fundamental human rights of freedom of expression and autonomy. Our first mission is to develop motor decoders that restore the ability of 15 million people with paralysis to interact with the digital world. Our second mission is to develop whole-brain cognitive decoders that enable hundreds of millions of people with cognitive decline to preserve and expand their agency as cognition changes over time.

In pursuing these goals, we aim not only to help humans flourish, but also to drive fundamental discoveries in human intelligence. Our team operates at the intersection of healthcare and technology, translating breakthrough research into real-world, safety‑critical systems.

Employment Type: Full-Time

About the Role

We are seeking a R&D Mechanical Engineer to own the mechanical design and development of Synchron’s implantable devices. This individual will lead the design of an implantable device, interfacing closely with electrical, firmware, and systems engineering teams to deliver an integrated implantable platform.

This is a deeply technical, hands‑on role. The successful candidate will drive mechanical architecture decisions from concept through verification, balancing biocompatibility, manufacturability, thermal management, and regulatory requirements as the program scales toward pivotal trials.

• Own the end-to-end mechanical design of the implantable device, including enclosures, feedthroughs, internal component packaging, and structural interfaces.
• Drive miniaturization strategies that meet volumetric constraints while preserving thermal, electrical, and structural performance
• Define and maintain mechanical interface control documents across the implant system
• Lead trade studies and design reviews for enclosure geometry, sealing methods, and material selection

• Specify materials and surface treatments compatible with long‑term implantation (titanium, ceramic, biocompatible polymers)
• Design and validate encapsulation approaches (laser welding, brazing, glass‑to‑metal seals) to ensure implant longevity
• Collaborate with biocompatibility and quality teams to ensure compliance with ISO 10993 and related standards
• Define accelerated aging and environmental test protocols for mechanical subsystems

• Develop manufacturing processes for implant assembly, including precision bonding, micro‑assembly, and clean‑room operations
• Own mechanical DFM/DFA and drive design iterations to support scalable production
• Partner with contract manufacturers to establish robust, repeatable build processes

• Serve as mechanical engineering lead within the design controls framework (e.g. ISO 14708)
• Author and maintain mechanical design inputs, risk analyses, and verification/validation protocols
• Support regulatory submissions with mechanical test reports, design rationale, and traceability documentation

• Partner closely with electrical, firmware, and systems engineers to co‑optimize the implant across all domains
• Work with the wider R&D team and delivery system engineers to ensure mechanical compatibility at the system level
• Contribute to failure analysis and root‑cause investigations spanning mechanical, electrical, and environmental factors

• Bachelor’s degree in mechanical engineering, biomedical engineering, or a related discipline
• 5+ years of experience in mechanical design of miniaturized, high‑reliability electromechanical systems
• Demonstrated expertise in hermetic packaging, precision assembly, and biocompatible materials
• Proficiency with 3D CAD (Solid Works or equivalent)
• Strong understanding of GD&T, tolerance stack‑up analysis, and mechanical drawing…