Site Supervisor jobs in United Kingdom

Location: Kings Langley, Hertfordshire
Salary: Competitive, DOE

• Modern, fully equipped machine shop featuring brand-new CNC machine tools and the latest software.
• Transparent and inclusive management culture.
• 25 days holiday plus Bank Holidays.
• Company pension scheme.
• Free onsite parking.
• Continuous training and long-term career development opportunities.

A well-established subcontract precision machining company supplying a wide range of sectors. The business operates to recognised quality standards and offers comprehensive capabilities in CNC Milling, CNC Turning, EDM processes and subcontract inspection. Continued growth and significant investment in new technology have created multiple opportunities within the Milling department.

1. CNC Miller – Setter/Operator (Nights)
2. Team Leader – Milling Department (Nights)

Both roles require individuals who are motivated, quality-driven and able to communicate effectively within a high-performance engineering environment, and willing to work Night shift.

Due to ongoing expansion and investment in advanced CNC machinery, JK Engineering is seeking experienced CNC Machinists to join the Milling team. Successful applicants will have strong attention to detail, a proactive approach to problem-solving, and at least 3+ years’ experience in CNC Milling. 5-axis experience is essential for both roles. The Team Leader vacancy is available for those with leadership capability and experience coordinating workflow within a milling environment.

• Setting and operating 5-axis CNC machining centres. (Heidenhain experience beneficial but not essential.)
• Producing small, complex, precision components to tight tolerances and strict quality standards.
• Participating in continuous improvement activities.
• Machining a wide range of materials, including aluminium, steels, titanium, super alloys, and engineering plastics when required.
• Reading and interpreting engineering drawings accurately.
• Proving out, setting and operating CNC programs and tooling for 5-axis machining.

• Minimum 3 years’ experience in CNC Milling.
• Proven competence with 5-axis machining.
• Ability to set and operate milling centres independently.
• Strong understanding of engineering drawings and machining best practice.
• For the Team Leader position: experience leading a small team, coordinating workload, and supporting junior machinists.

• Monday to Thursday – 5:00pm to 5:00am
• Regular overtime available (typically 5–10+ hours per week, paid at x1.5).

If you’re an experienced CNC Miller looking for a fresh challenge - or a skilled machinist ready to step up into a Team Leader role - we’d love to hear from you. Please get in touch to discuss the opportunities further or to submit your application.

Bolt-On Personnel and our clients are equal opportunity employers who seek to recruit and appoint the best available person for a job regardless of marital/civil partnership status, sex, age, religion, belief, race, nationality and ethnic or national origin, colour, sexual orientation or disability. Bolt-On Personnel and our clients apply all relevant Data Protection laws when processing your Personal Data. If you choose to apply to this opportunity and share your CV or other personal information with Bolt-On Personnel, these details will be held by us in accordance with our privacy policy used by our recruitment team to contact you regarding this or other relevant opportunities at Bolt-On Personnel.