Machinist

Atomicsemi; Lockhart (FL); On-site; USD 65,000 - 90,000; Full time

Benefits offered by this job

Medical insurance

Dental & Vision insurance

Visa sponsorship

401(k) retirement plan

Paid time off

Learning opportunities

Commuter benefits

Lunches & dinners

Stocked office kitchen

Job summary

fab2 is building a new generation of semiconductor manufacturing equipment and is staffing up its first production facility. You will own the CAM programs for Haas UMC‑500SS and UMC‑750SS machines, optimizing toolpaths, fixturing, and setup procedures to accelerate throughput and ship more cubes each month.

We value hands‑on engineers who can iterate to the limits of what’s possible, with opportunities for growth, visa sponsorship, and comprehensive benefits in a startup environment.

Qualifications

• 3+ years CNC machining experience, including at least 1 year on 5‑axis.
• Haas control fluency (or comparable Fanuc).
• Ability to read GD&T and inspect to print.
• Ability to own offsets and edits at the machine.

Responsibilities

• Day‑to‑day operation of Haas UMC‑500SS (×3) and UMC‑750SS 5‑axis VMCs, plus DS‑30Y dual‑spindle Y‑axis lathes.
• Setup, first‑article inspection, in‑process gauging.
• Tool loading from the Haas presetter.
• Pallet‑pool management on the UMCs (lights‑out queue).
• Bar feeder setup and material changeover on the DS‑30Y.
• Reading prints, holding tolerances on stainless and aluminum (typical ±0.005").

Skills

CNC machining

5‑axis programming

Haas control fluency

Tools

Mastercam

Fusion 360

HSMWorks

Renishaw probing

Job description

About fab2

The fab2 team can build anything. We design all the hardware and software needed to make chips and we make the fabs, tools, and components ourselves.

We’re looking for exceptional, hands‑on people who can iterate to the limits of what’s possible.

About the team

The fab2 production team manufactures chip fabs. From deposition and etching tools to lithography and metrology, we are building every tool ourselves. We fabricate the metal parts, operate SMT lines to build PCBAs, and assemble the tools in‑house.

About the role

fab2 is building a new generation of semiconductor manufacturing equipment. We’re staffing up our first production facility, and the CNC programmer is the seat that decides how fast we can build them.

You own the CAM programs that run our Haas fleet — three UMC‑500SS five‑axis VMCs, one UMC‑750SS, two DS‑30Y mill‑turn lathes. Today our chassis‑mix mill cycle is ~45 min/part. Your year‑one target is to drop that to 20 min/part through better toolpaths, smarter fixturing, optimized tool selection, and disciplined process documentation. That single number controls how many cubes we can ship per month.

Responsibilities

• Day‑to‑day operation of Haas UMC‑500SS (×3) and UMC‑750SS 5‑axis VMCs, plus DS‑30Y dual‑spindle Y‑axis lathes
• Setup, first‑article inspection, in‑process gauging
• Tool loading from the Haas presetter
• Pallet‑pool management on the UMCs (lights‑out queue)
• Bar feeder setup and material changeover on the DS‑30Y
• Reading prints, holding tolerances on stainless and aluminum (typical ±0.005")

Required Experience

• 3+ years CNC machining experience, including at least 1 year on 5‑axis
• Haas control fluency (or comparable Fanuc)
• Ability to read GD&T and inspect to print
• Ability to own offsets and edits at the machine

Nice‑to‑have

• Mastercam, Fusion 360, or HSMWorks programming
• Renishaw probing
• Bar‑fed lathe with sub‑spindle (DS‑30Y, ST‑25Y, etc.)
• Mill‑turn / live‑tooling on lathes

Working at fab2

We’re an early‑stage hardware startup with solid funding, world‑class advisors, and a lab/office in San Francisco, CA.

Benefits

• Medical, Dental, and Vision insurance
• Generous Paid Time Off inclusive of Holidays and Sick Time
• Visa Sponsorship
• Life and Disability Insurance
• Paid Parental Leave
• 401(k) retirement plan
• Weekly Learning & Development opportunities
• Commuter Benefits including Parking and Late Night Uber rides from the office
• Lunches daily, Dinners 3x per week, Stocked Office Kitchen with Snacks and Spindrifts

We are an equal‑opportunity employer and do not discriminate on the basis of race, religion, national origin, gender, sexual orientation, age, veteran status, disability or other legally protected statuses.

Export Control Analysis

This position involves access to technology that is subject to U.S. export controls. Any job offer made will be contingent upon the applicant’s capacity to serve in compliance with U.S. export controls.

fab2, formerly known as Atomic Semi