Hardware Prototype Engineer (Part-time Contract)New

NEX Corporation; Hong Kong; On-site; HKD 276,000 - 441,000; Part time

Job summary

NEX Corporation is seeking a Hardware Prototype Engineer for a part-time two-month engagement in Hong Kong. This hands-on role focuses on building and refining electronics and enclosures, collaborating with software engineers and researchers to turn concepts into reliable prototypes.

You’ll design circuits and PCBs, create mechanical enclosures with CAD and 3D printing, assemble and debug prototypes, and document build details for the team.

Qualifications

• Demonstrated experience building working electronic prototypes including circuit design and board bring-up.
• Hands-on CAD experience and rapid enclosure prototyping (e.g., 3D printing).
• Experience with microcontrollers, sensors, wireless modules, and battery-powered electronics.
• Clear communication and ability to document issues and options for software engineers.

Responsibilities

• Design and modify circuits and PCBs; select and integrate components.
• Create mechanical CAD and 3D-printed enclosures with practical mounting solutions.
• Assemble, bring up, rework, and debug prototypes using lab measurements.
• Collaborate on firmware and software integration, addressing interface, connectivity, and power issues.
• Iterate quickly from test findings and produce reliable prototype units.
• Document schematics, PCB files, BOMs, CAD, assembly instructions, and known limitations.

Skills

Circuit design

Board bring-up

Soldering

CAD

Testing

Firmware integration

Documentation

Independent work

Embedded C/C++

Tools

Oscilloscope

Multimeter

Logic analyser

3D printing

Job description

Hardware Prototype Engineer (Part-time Contract)New

Nex creates active-play experiences that bring people together through movement and games.

Working with our Core Technology team, you'll build and refine electronics and enclosures, collaborating with software engineers and researchers to turn concepts into reliable, usable prototypes. This is a hands-on prototyping role, not a mass-production hardware program.

The Mindset

You're a practical builder, comfortable with schematics, soldering, CAD, and testing. You balance speed with engineering discipline, make sensible build-versus-buy trade-offs, and take ownership of the complete prototype.

What You'll Do

• Design and modify circuits and PCBAs; select and integrate components.
• Create mechanical CAD, 3D-printed enclosures, and practical mounting solutions.
• Assemble, bring up, rework, and debug prototypes using lab measurements.
• Collaborate on firmware and software integration, resolving interface, connectivity, and power issues.
• Iterate quickly from test findings and build consistent, reliable prototype units.
• Document schematics, PCB files, BOMs, CAD, assembly instructions, and known limitations.

Success Looks Like

• Fast iteration from identified problems to tested improvements.
• Usable, consistent prototypes that withstand repeated testing and handling.
• Clear documentation enabling the team to maintain and reproduce builds.

What You Bring

• Demonstrated experience building working electronic prototypes, including circuit design, board bring-up, soldering, rework, and debugging.
• Hands-on experience with mechanical CAD and rapid enclosure prototyping, such as 3D printing.
• Experience integrating microcontrollers, sensors, wireless modules, and battery-powered electronics.
• Confidence using oscilloscopes, multimeters, logic analysers, and other practical debugging tools.
• Ability to work independently, make sensible trade-offs, and deliver within a short iteration cycle.
• Clear communication and documentation skills, including explaining issues and options to software engineers.
• Availability to work on-site in Hong Kong on a half-time basis for a two-month engagement.

Preferred

• Experience with Bluetooth-connected devices, sensors, or interactive hardware.
• Embedded C/C++ skills and experience modifying firmware for device bring-up and diagnostics.
• Experience with compact, battery-powered consumer-device prototypes.
• Familiarity with component sourcing, PCB fabrication, and local rapid-prototyping suppliers.
• Experience preparing hardware for hands-on user evaluation.
• Interest in games, physical interaction design, or consumer electronics.