Computer Numerical Control Machinist

Lockheed Martin; Ampthill; On-site; GBP 32,000 - 46,000; Full time

Job summary

Lockheed Martin in the United Kingdom is seeking a skilled CNC Machinist Turner to set, program, and maintain high‑precision CNC turning machines in a fast‑paced R&D oriented shop. You will design processes, optimize tooling, write G-code, and oversee production of high‑value parts while mentoring apprentices and collaborating with engineering and tooling suppliers.

The role emphasizes continuous improvement, applying 6S/lean tools, and strict adherence to specifications and drawings.

Qualifications

• Minimum 5 years of machining experience.
• Experience with 6 Sigma and lean manufacturing tools.
• Programming, setup and operation of CNC lathes.
• Proficient with Heidenhain, Fanuc and Siemens controls.
• Ability to interpret drawings and perform inspections.

Responsibilities

• Set, operate and maintain CNC turning machines in an R&D‑oriented shop.
• Design machining processes and select tooling; write G-code.
• Oversee production of high‑value, low‑volume parts and one‑offs.
• Mentor apprentices and collaborate with engineering and tooling suppliers.
• Drive continuous improvement initiatives and problem‑solving in processes.

Skills

Machining experience

Six Sigma/Lean

G-code programming

CNC turning

Reading drawings

Quality inspection

Problem solving

Work prioritization

Tools

Heidenhain controls

Fanuc controls

Siemens controls

Job description

37.5 hours per week + 4 day work week option

About the role

We are recruiting a CNC Machinist Turner who will set, operate and maintain high‑precision CNC Turning machines in a fast‑paced, R&D‑oriented shop.

The ideal candidate will bring advanced turning and milling expertise whilst also being comfortable on multi‑axis milling centres.

You will design machining processes, select and optimize tooling, write G‑code, and oversee production of high‑value, low‑volume parts and one‑offs.

You'll participate in daily shop briefings to discuss objectives, issues, and improvement ideas.

The role includes mentoring apprentices, collaborating closely with engineering and tooling suppliers, and driving continuous improvement initiatives.

We’ll provide you with all the equipment you will require from clothing, Safety Shoes, PPE as well as all Tooling and Gauging required, alongside meaningful work that will allow you to grow your skills and enhance your career with us, but equally important to us is that you enjoy a strong work life balance as well.

We may not know what’s going to change the world next, but chances are we’re already working on it, and you can be part of the story too!

The successful candidate must be able to achieve the appropriate level (SC) of security clearance.

Required skills, qualifications and experience

• 5 years minimum machining experience.
• Experience of 6 Sigma and lean manufacturing tools and techniques.
• Programming, set up, and running of CNC lathes.
• Skilled in using Heidenheim, Fanuc and Siemens controls; Edit CNC programs, set fixtures and tooling, proving out and operating CNC machines to produce R and D and production component parts.
• Making work offset, tooling and program adjustments as required.
• Working to specifications, procedures and engineering drawings.
• Inspecting produced parts using various measuring instruments and hand gauges and interprets CMM inspection results.
• Supporting the development of machining processes and tooling/fixture design.
• Liaising with engineering to improve machining methods.Using problem solving techniques to solve machining and process related issues.
• Prioritising workload to meet deliverable commitment timelines.
• Experience of 6 S and lean manufacturing tools and techniques.

Desired Skills

• Experience and / or transferable skills to support Turning and milling operations.
• Creating and refining machining strategies for R&D, prototype, and low‑volume production parts.
• Producing accurate work instructions, process delineations, and change‑order documentation.
• Implementing corrective action plans and track the effectiveness of process changes.
• Coordinating with production planners to balance volume and turnaround requirements.

Lockheed Martin is committed to upholding principles of equal opportunity, fostering a work environment that is aligned with our core values of integrity, respect, and exceptional performance. We recognize the importance of leveraging the unique talents and experiences of all our employees to drive innovation, deliver superior solutions, and maximize value for our customers. Our focus is on identifying the most qualified candidate for each role, regardless of their background. Lockheed Martin is dedicated to ensuring our recruitment process is inclusive for all individuals. We are prepared to accommodate reasonable adjustments for applicants as needed. If you require assistance or adjustments to participate in the job application or interview process, please contact [e-mail] or call 02392 415270.