Senior CNC Machinist

Sigma Recruitment; Ault; On-site; GBP 40,000 - 60,000; Full time

Job summary

A leading precision engineering company in Northern Ireland is seeking a skilled individual to oversee initial production runs and mentor teams in 5-axis machining. This role involves programming modern CAM software and ensuring compliance with rigorous standards. The ideal candidate will possess extensive experience, demonstrating measurable improvements in machinist practices. Competitive salary and benefits are offered.

Benefits

Competitive salary

Pension

20 Days Holiday + Bank Holidays

Qualifications

• Deep expertise in 5-axis machining of tight-tolerance parts.
• Experience with FMS or pallet systems like MAM or Fastems is a plus.
• Proven track record of delivering measurable improvements.

Responsibilities

• Oversee complex initial production runs ensuring stability and safety.
• Program 5-axis and 3+2 machinery using modern CAM software.
• Mentor programmers and operators to standardize best practices.

Skills

Extensive 5-axis experience

Fluency in CAM software

Probing and macros experience

Process verification

Job description

Why You Should Apply?

This isn't just another machining job - It is your chance to become the technical authority in a high-growth AS9100 accredited precision engineering business, that has a current focus on the expanding defence and space sectors.

If you have deep 5‑axis expertise and a passion for mentoring, you will get the tools, investment, and freedom to elevate 5‑axis capability; faster prove‑outs, rock‑solid fixturing, smarter probing, cleaner code, and a team to coach.

The company have also been consistently investing in their facility and equipment, with the latest being a significant CAPEX expenditure for a new CNC Machine.

Your Remuneration Package

A competitive salary (dependent on experience), pension, 20 Days Holiday + Bank Holidays (with additional days given for the Christmas shutdown).

What You'll Be Doing

Overseeing complex initial production runs, from de‑risking setups to ensuring stability and safety. Programming for simultaneous 5‑axis and 3+2 machinery using modern CAM software, designing modular fixtures, and defining probing strategies. A key focus will be on standardising best practices by developing tooling libraries, set‑up sheets, and version‑controlled programs.

You will also mentor programmers and operators, transforming expert knowledge into repeatable methods, and collaborate closely with the inspection department to achieve GD&T compliance through disciplined process control.

What You'll Need To Apply

Extensive 5‑axis experience in machining tight‑tolerance parts from materials ranging from aluminium to nickel‑based alloys. You must be fluent in CAM software and confident making edits directly at the control. The role also requires experience with probing, macros, and in‑process verification. A proven track record of delivering measurable improvements in cycle‑time, tool life, and set‑up reduction is essential. Experience with FMS or pallet systems like MAM or Fastems is a plus.

Next Steps

If you are ready for a role where you can make a real difference, we want to hear from you. Apply now for a confidential discussion.

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