CNC Machinist
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What you'll do
- Operate and set up 5-axis CNC milling machines to produce high-precision components in line with engineering drawings and specifications.
- Adjust machine settings and tooling to optimise performance and ensure product quality.
- Execute the tactical day plan and ensure throughput targets are met by coordinating resources, addressing bottlenecks, and maintaining a smooth flow of operations.
- Act as the primary focal point for the machining and extrusion cell, ensuring operational excellence and addressing challenges.
- Assess and resolve issues on the floor promptly, knowing when to escalate concerns to the supervisor as needed.
- Provide mentorship and guidance to operators, promoting skill development and best practices.
- Deputise for the supervisor during their absence, including participating in relevant meetings, such as planning and quality discussions.
- Collaborate with cross-functional teams to ensure production goals, quality standards, and safety protocols are met.
- Drive continuous improvement initiatives to optimise processes and enhance overall efficiency within the cell.
- Monitor and report on KPIs, ensuring alignment with organisational objectives.
What they're looking for
- Proven experience in operating and programming 5-axis CNC milling machines, preferably in a high-precision engineering environment.
- Strong understanding of engineering drawings, geometric dimensioning, and tolerancing (GD&T).
- Excellent problem-solving skills with a focus on detail and accuracy.
- Knowledge of aerospace industry standards is highly desirable.
- Ability to work independently and as part of a team in a fast-paced environment.
- Strong commitment to EH&S and Quality standards.
Nice to have
- Time-served apprenticeship or equivalent qualification in fabrication or mechanical engineering.
- Minimum of 5 years of experience working with fabrication equipment in a production or manufacturing environment.
Summarised by NextRaise from the employer’s description, which follows in full below.
Full description from employer
Date Posted:
2026-07-17

Country:
United Kingdom

Location:
Leighton Buzzard, Bedfordshire

Position Role Type:
OnsiteJob Opportunity: CNC Machinist
Location: Leighton Buzzard
Company: Collins Aerospace
Shift: Day Shift
Are You Ready to Shape the Future of Aircraft Interior Components?
At RTX, the world's largest aerospace and defence company, 185,000 great minds are united by purpose and inspired to make a difference solving the world’s most complex problems. With our three market leading businesses, world-class operations and investments in research and development, we offer capabilities and opportunity no one else can. Together, we push the boundaries of known science and find new ways to connect and protect our world.
Collins Aerospace is a leader in technologically advanced, intelligent solutions that help redefine the aerospace and defence industry. With a comprehensive portfolio and deep technical expertise, we help customers meet the demands of the global market. Join us and help shape the future of aerospace and defence.
We are seeking a highly skilled and experienced CNC Machinist with expertise in operating and programming 5-axis milling machines to join our Machining team in Leighton Buzzard. The successful candidate will be responsible for delivering precision-engineered components to exacting specifications while ensuring adherence to quality, safety, and efficiency standards. This role is vital to supporting our commitment to excellence in the aerospace.
Key Responsibilities:
- Operate and set up 5-axis CNC milling machines to produce high-precision components in line with engineering drawings and specifications.
- Adjust machine settings and tooling to optimise performance and ensure product quality.
- Execute the tactical day plan and ensure throughput targets are met by coordinating resources, addressing bottlenecks, and maintaining a smooth flow of operations.
- Act as the primary focal point for the machining and extrusion cell, ensuring operational excellence and addressing challenges.
- Assess and resolve issues on the floor promptly, knowing when to escalate concerns to the supervisor as needed.
- Provide mentorship and guidance to operators, promoting skill development and best practices.
- Deputise for the supervisor during their absence, including participating in relevant meetings, such as planning and quality discussions.
- Collaborate with cross-functional teams to ensure production goals, quality standards, and safety protocols are met.
- Drive continuous improvement initiatives to optimise processes and enhance overall efficiency within the cell.
- Monitor and report on KPIs, ensuring alignment with organisational objectives.
Required Skills & Experience:
- Proven experience in operating and programming 5-axis CNC milling machines, preferably in a high-precision engineering environment.
- Strong understanding of engineering drawings, geometric dimensioning, and tolerancing (GD&T).
- Excellent problem-solving skills with a focus on detail and accuracy.
- Knowledge of aerospace industry standards is highly desirable.
- Ability to work independently and as part of a team in a fast-paced environment.
- Strong commitment to EH&S and Quality standards.
Preferred Skills & Experience:
- Time-served apprenticeship or equivalent qualification in fabrication or mechanical engineering.
- Minimum of 5 years of experience working with fabrication equipment in a production or manufacturing environment.
Why Join Us?
At Collins Aerospace, we believe in empowering our people to make a real difference. You’ll be part of a supportive, innovative team where your contributions are valued, and your career growth is encouraged. With excellent benefits, a flexible working environment, and the opportunity to work on cutting-edge aircraft interior components, this is the perfect chance to take your machining career to the next level.
What We Offer:
- 25 days Annual Leave + Bank Holidays
- Fantastic Pension Scheme
- Private Medical Insurance
- Employee Assistance Programme for personal support
- Cycle to Work Scheme and other employee discounts
Apply Today!
We’re looking forward to hearing from you.
RTX adheres to the principles of equal employment. All qualified applications will be given careful consideration without regard to ethnicity, color, religion, gender, sexual orientation or identity, national origin, age, disability, protected veteran status or any other characteristic protected by law.
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