Senior Mazak Mill/Turn CNC Machining Specialist (Aerospace)

Shift: 2nd Shift (3:00PM - 11:30PM), Monday – Friday

Facility & Location: Ketema, El Cajon, CA

Elevate What Flies

At Zenix Aerospace, we unite decades of know-how across eight strategic locations in the US, UK, and Southeast Asia. As a trusted supplier on major fuel‑efficient commercial narrowbody platforms, we design and deliver high‑technology structural airframe and engine components that help aircraft and space systems operate safely, reliably, and efficiently. Our future‑focused approach to digital innovation, quality, and safety powers consistent excellence—together, we are elevating aerospace.

About Zenix Aerospace Ketema

Our Ketema site supports leading aircraft and turbine engine manufacturers, and produces precision components for space, marine, and ground‑based applications. We specialize in complex fabrications and machined parts from titanium and nickel alloys.

A day in this role

At 3:00 PM you step onto the floor, review the work order, and confirm material, dimensions, and tolerances. You plan the sequence of operations for a complex part, choosing the right fixturing and tooling for 3–5 axis CNC equipment—lathe, mill, VTL, or a modified dual‑head mill—so the job flows safely and efficiently.

You mount, align, and secure the fixture and workpiece, verifying centering and indicating. With the machine set, you dial in feeds, speeds, depth of cut, and coolant flow. You run a test, check dimensions against blueprints and GD&T callouts (true position, circularity), and make precise adjustments. If automatic programming or a controller hiccups, you troubleshoot and correct course using your knowledge of Fanuc or Mazak controls.

Throughout the shift, you monitor gauges and indicators, keep coolant and positioning in spec, and perform routine maintenance. You validate results with calipers, micrometers, and bar gauges to ensure conformity. You wrap up by cleaning tooling, parts, and the surrounding area per 5S, and you feed improvement ideas into our Continuous Improvement pipeline.

How you’ll contribute

• Plan and execute challenging machining assignments with minimal supervision.
• Interpret blueprints, drawings, and templates; determine dimensions, tolerances, and numerical control sequences.
• Set up, adjust, and operate CNC machine controls to produce precision parts to spec.
• Mount, align, and secure tooling, attachments, and workpieces; perform test runs and adjust as needed.
• Diagnose malfunctions; perform routine checks (coolant, positioning) and basic maintenance.
• Verify dimensions and quality using precision measurement tools to ensure conformance.
• Maintain a safe, organized workspace consistent with 5S standards.
• Engage in Daily Management board discussions on Safety, Quality, Delivery, Efficiency, and Utilization.
• Proactively propose machining and process improvements; participate in Continuous Improvement activities.
• Demonstrate reliability, teamwork, adherence to policies, and a commitment to feedback and results.

Skills that set you up for success

• Blueprint reading (dimensions, true position, circularity) and shop math.
• GD&T fluency; feeds and speeds calculations.
• Familiarity with desktop publishing software and proficiency with computerized spreadsheets for analysis.
• Hands‑on knowledge of machines, controllers, and tooling (Fanuc or Mazak).
• Expert fixture setup: clamping, centering, and indicating.
• Tooling setup and insert changes for cutting operations.
• Use of calipers, micrometers, and bar gauges.

Qualifications

• High school diploma/GED, or equivalent combination of education and experience.
• Vocational training or equivalent practical experience required.
• 5+ years of CNC setup and operation experience (or equivalent).
• Mazak Mill/Turn experience required.

Why you’ll love working here

Expect market‑led base pay, comprehensive benefits, wellness programs, employee recognition, a matching 401(k), paid vacation, tuition reimbursement, and opportunities to get involved in the community—all within a tight‑knit, collaborative team.

Your proficiency and tools

You should be proficient in:

• CNC Tooling
• CNC Machine Setup & Changeover

Machines & technologies you'll use:

• CNC Mill (5+ axis VMC) (Mazak)

Compliance and eligibility

If offer of employment is made it will be contingent upon passing all of the following: Drug Test, Background Check, ITAR and U.S. Export Compliance Screening.

Equal Opportunity Employer: minority/female/disability/veteran

Access to our facility (and, therefore, employment) is restricted under the International Traffic in Arms Regulations (ITAR) and/or Export Administration Regulations (EAR) to U.S. Citizens, lawful permanent residents, U.S. refugees, asylees or temporary residents under amnesty provisions [as defined in 8 USC 1324b(a)(3)] and properly licensed foreign persons. Applicants receiving a conditional offer of employment will be required to provide information to determine whether they are subject to these regulations and, if so, to assess their country of chargeability for trade compliance control purposes. Additionally, potential employee’s names will be screened against the Consolidated Screening List (maintained by the United States government) to determine eligibility to receive technical data.