Precision Assembler

Persona AI Inc•Houston, TX

4d•Onsite

About The Position

Persona AI is developing and commercializing rugged, multi-purpose humanoid robots that perform real work. The Precision Assembler will build the hands that hold the torch for these robots, which weld, grind, and inspect in shipyards and heavy fabrication shops. This role involves fine-motor bench assembly under magnification, working with miniature components, precise torquing of fasteners, and careful routing of drive tendons. The assembler will install sealed modules, work under ESD discipline, and use precision measuring tools. This is a craft-oriented role for individuals with experience in precise handwork, applied to advanced robotics.

Requirements

High school diploma or GED.
Demonstrated fine-motor precision work with your hands, from any industry — watch or instrument repair, medical or dental device assembly, jewelry, gunsmithing, luthiery, or military precision maintenance.
Steady hands, patience, and the ability to hold focus on detailed work.
Comfort working under magnification, or confidence you will adapt to it.
Ability to read mechanical drawings and assembly work instructions.
Comfort with precision measuring tools, or the interest to learn them.
Willingness to follow a documented process exactly, and to speak up when the process is wrong.
Availability for overtime and occasional weekend work during production pushes, paid at 1.5x.

Nice To Haves

Watchmaking, horology, or precision instrument, camera, or optics repair.
Medical device, surgical instrument, or dental laboratory assembly.
Microscope or magnified assembly experience in any industry.
Cable, tendon, or wire rope work — including bicycle, aviation control cable, rigging, or textile backgrounds.
Miniature bearing, gearhead, or small mechanism assembly.
Military precision maintenance — avionics, optics, ordnance, instrument, or medical equipment specialties.
Three or more years of fine-tolerance assembly, repair, or fabrication, which may qualify you at the Assembler II level.

Responsibilities

Assemble finger, thumb, and wrist mechanisms from engineering drawings — miniature bearings, pivot pins, linkages, retaining rings, and springs.
Route and pre-tension drive tendons and cables to specification.
Assemble miniature gearheads and small actuator units, keeping serialized matched sets together.
Torque miniature fasteners (roughly M1.6 to M3) with calibrated low-range torque drivers, working in newton-centimeters.
Apply adhesives, thread locker, and lubricant in controlled quantities; install seals, boots, and covers.
Verify each hand against acceptance criteria — range of motion, joint backlash, tendon pre-tension, and smoothness — using pin gauges, micrometers, and dial indicators.
Mate pre-terminated sensor connectors and dress flex cable during palm and wrist closeout, under ESD control.
Record build data accurately — serial numbers, matched sets, torque values, and tendon tensions — in our shop floor build records.
Flag parts, drawings, or steps that don't work as written.