Isai Barahona

Entry-level CNC Machinist and U.S. Marine veteran (Sergeant/E-5, 9 years) ready to move from production support into a low-volume, high-mix prototype shop. Trained to program, set up, and run CNC mills and lathes: editing G-code in Mastercam, setting work and tool offsets, and verifying parts to print with calipers, micrometers, and bore gauges.

Currently running a CNC lathe in a precision instrument production shop. Holds NIMS mill and lathe credentials, NC3 Starrett PMI Levels 1–6, and the CSWA. Dependable, team-first, accustomed to physically demanding work, and driven to keep learning the trade.

Production Support Technician at Reotemp Instrument Corporation (2026-04 – Present)

• Run CNC lathe to produce precision turned parts per print, averaging 60 parts per shift across 15 part numbers.
• Cut and prepare raw material stock to print specifications for CNC production runs, supplying 100+ blanks per week.
• Verify dimensions with calipers and micrometers to ±0.005", catching out-of-spec features before parts move on.
• Trained in TIG welding (tack and fusion welds on stainless thermowells); also handle receiving and material tracking.

CNC Machining Student at Workshop for Warriors (2025-08 – 2025-12)

• Programmed, set up, and ran CNC mills and lathes to make parts complete from prints, holding ±0.003" in steel and aluminum.
• Programmed and edited G-code in Mastercam to optimize tool paths, reducing cycle times by 2% on lathe projects.
• Configured work and tool offsets, coordinate systems, and verification procedures to confirm accuracy before cutting.
• Inspected finished parts with calipers, micrometers, and bore gauges, achieving a 99% first-pass inspection rate.
• Calculated feeds, speeds, and depths of cut by material; built multi-part assemblies and drawings in SolidWorks.

Electrician at MCCS Camp Pendleton (2024-08 – 2025-08)

• Troubleshoot, repair, and install electrical systems across single phase and commercial three-phase + base facilities to NEC code with no safety incidents.

Solar Electrician at Tesla Energy (2020-11 – 2023-09)

• Installed and commissioned powerwall batteries + residential PV systems, including wiring and inverter testing.
• Performed diagnostics and warranty repairs with a 100% customer satisfaction score, on schedule to Tesla standards.

Electrical Apprentice at Helix Electric (2018-06 – 2020-09)

• Supported journeymen on commercial and residential conduit, panel, and device wiring; completed OSHA 10 training.

Sergeant (E-5), Active Duty—0331 Machinegunner at United States Marine Corps (2001-01 – 2010-01)

• Lead marines through training and into combat situations

Certificate of Achievement in CNC Machining 1 Program – Workshop for Warriors (2025-08 – 2025-12)

Certificate of Achievement in Electricity – San Diego City College (2019-01)

Bachelor of Arts in Integral Studies – California Institute for Human Science (2015-01)