Design Novel Geophysical Sensor System needed

We are looking for an experienced Geophysical Instrumentation Engineer to design and develop a prototype hardware device for gold exploration and underground mineral detection. Requirements: Experience in geophysical instruments, mineral exploration, or metal detection hardware. Strong knowledge of electronics, PCB design, sensors, and embedded systems. Experience with electromagnetic induction, pulse-induction, or resistivity/IP survey equipment. Ability to develop, assemble, calibrate, and field-test a working hardware prototype. Experience with embedded firmware and sensor data acquisition. Our in-house software team will handle the application development. The freelancer will focus exclusively on hardware design, prototype development, and testing. Engagement: Freelance / Contract Experience: 5+ years preferred Budget and timeline: Negotiable based on expertise and proposed solution. Please share relevant project experience, proposed technology, estimated cost, and development timeline. Budget: AUD 250–750