R&D Engineer III (Hardware)
Opto Biosystems
Other Engineering
San Francisco, CA, USA
Posted on May 9, 2026
Job Title: R&D Engineer III
Location: San Francisco
Type: Full-Time (on-site)
Coherence Neuro is a fast-growing, venture-backed company pioneering implantable technologies that interface with the human body to address critical unmet medical needs. We're looking for driven individuals who are passionate about pushing the boundaries of engineering and science to solve some of the most complex biological challenges. In this early-stage environment, we seek versatile team members with a hands-on approach and a willingness to learn quickly and adapt. We value diversity and encourage applicants from all backgrounds to join us in our mission. Learn about our team here!
We are seeking a detail-orientated and ambitious Research and Development Engineer (Hardware) III to contribute to the research and development of novel neurotechnology devices which engage the nervous system. The successful candidate will play a key role in the rapid design, prototyping, and characterisation of hardware interfacing research implants with external systems, working closely with surgical and data science teams to deliver high-performance implantable hardware for preclinical programmes. We seek someone comfortable operating in a fast-paced start-up environment where requirements evolve quickly and iterative design is essential.
Key Responsibilities
Design and implement implant-system interface hardware, including custom headstages, flex PCBs, breakout boards, and stimulation electronics
Design and validate PCB assemblies for neural stimulation, including programmable drivers, charge-balancing circuits, and stimulation-safe protection networks
Perform schematic capture, layout review, component selection, and PCB bring-up
Assemble, solder, and debug fine-pitch and miniaturised PCBs through full functional verification
Design and fabricate mechanical prototypes using 3D printing, laser cutting, and machining
Build and maintain test setups for device characterisation and root-cause analysis
Maintain design records, test reports, and version-controlled documentation
Collaborate cross-functionally with data scientists, preclinical researchers, and other engineers
Required Qualifications and Skills
Ph.D. in Electronic Engineering, Mechatronics, Biomedical Engineering, or Neuroscience preferred, alternatively B.Sc. or M.Sc. with 3+ years of hands-on industry hardware development experience
Proficiency with ECAD tools (Altium preferred) and able to take circuits from schematic through to validated prototype
Experience with embedded firmware development, including timing-critical and low-power design
Competent with rapid mechanical prototyping: 3D printing, laser cutting
Strong practical bench skills and systematic hardware debug
Clear, structured communicator able to work across engineering, science, and surgical disciplines
Bonus Skills
Direct experience with neural recording or stimulation hardware in preclinical settings
Familiarity with standard neurotech acquisition platforms (Intan, Open Ephys, Ripple, TDT)
Understanding of electrode-electrolyte electrochemistry and impedance spectroscopy
RF communication and wireless power delivery for implantable devices
Flexible or stretchable PCB design experience
Project management or cross-functional technical leadership experience
Reporting Structure:
This role is an integral part of the Research team and reports directly to the Lead R&D Engineer.
Benefits:
Competitive salary and share options
Healthcare, dental and vision
401k with company match
Industry leading paid time off (PTO) - 20days/year
Daily meals and snacks provided
Professional development support and training opportunities.
Flexible working hours and travel opportunities (We have sites in Australia, UK and US!)
A chance to work on impactful, life-changing technologies in a dynamic, innovative environment.
If you are passionate about innovation in healthcare, we would love to hear from you! Please submit your application here.
