Job Description

Machine Shop Supervisor (CNC Required)

• Santa Fe Springs, CA, USA

Company Description

John Crane, a business of Smiths Group, is a global leader in mission-critical flow control solutions for energy and process industries that enable efficient and sustainable operations. Our products include mechanical seals and systems, couplings, bearings, filtration systems, and predictive digital monitoring technologies.

We have a global network of more than 200 sites in over 50 countries and employ more than 6,000 people worldwide. We partner with our customers to help them keep their operations safe, reduce downtime, improve efficiency, and meet the latest environmental standards.

John Crane is part of Smiths Group. For over 170 years, Smiths has been pioneering progress by engineering for a better future. We serve millions of people every year, helping to create a safer, more efficient, productive, and better-connected world across four global markets: energy, security & defence, space & aerospace, and general industrial. Listed on the London Stock Exchange, Smiths employs approximately 16,000 colleagues in over 50 countries.

Job Description

Under the direction of the Manager, direct, supervise, and coordinate hourly personnel in a production, service, or maintenance department, with CNC machining being the primary area of responsibility, in accordance with company policy and practices, operating schedules, and controls for one or more shifts in more than one area of the plant.

• Direct, supervise, and coordinate hourly personnel across production, service, maintenance, and machining areas, with CNC machining as the primary area of responsibility.
• Ensure safe, efficient, and high-quality operations in accordance with company policies, operating schedules, and departmental objectives.
• Oversee daily shop activities including CNC machining, manual machining, assembly, repair/service, and general production tasks.
• Assign work, prioritize tasks, and provide guidance and support to employees throughout the shift.
• Maintain strong oversight of CNC operations, including setup practices, tooling needs, machining methods, and issue resolution.
• Monitor the use of safety devices, enforce safety protocols, and maintain a clean and hazard-free shop environment.
• Participate in hiring, onboarding, training, and development of production and machining associates.
• Conduct performance evaluations, recommend wage adjustments, and support employee communications and engagement initiatives.
• Collaborate with Production Control, Engineering, and Manufacturing Engineering to support machining schedules, drawings, process changes, and tooling requirements.
• Anticipate production or machining problems and implement corrective actions to minimize downtime or schedule interruptions.
• Work with vendors and suppliers regarding materials, tooling, equipment, service quality, and delivery schedules.
• Investigate accidents, equipment issues, and process inefficiencies; recommend improvements for safety, productivity, and cost savings.
• Prepare and maintain accurate production, machining, and efficiency reports in ERP/MRP systems.
• Perform additional duties as assigned.

Qualifications

• Minimum 5 years of experience in a manufacturing environment, ideally in CNC machining, assembly, repair/service, or production operations
• Minimum 2 years of supervisory or team-lead experience in a shop or manufacturing setting
• Significant hands-on CNC machining experience — CNC is the largest and most critical part of this role.
• CNC operation and basic setup
• Tooling knowledge and selection
• Feeds, speeds, and machine controls
• Troubleshooting machining issues
• Experience working in a job-shop or high-mix machining environment.
• Experience overseeing or coordinating multiple shop areas (machining, assembly, service/repair, test, production) preferred.
• Demonstrated ability to train, coach, and develop hourly associates.
• Proficiency with ERP/MRP systems for tracking work orders, labor hours, and machining/production data.
• Strong verbal and written communication skills.
• Ability to manage competing priorities in a fast-paced, dynamic environment.
• Proficiency in Microsoft Office (Word, Excel, PowerPoint, Access, Outlook).
• High school diploma or equivalent; associate degree or technical certification preferred.

Must Be Able To

• sit for extend periods of time; a minimum of 2 hours.
• maneuver to all areas of the office.
• lift up to 35 pounds.
• bend, reach, kneel, twist, and grip items while working at assigned desk area.
• have the manual dexterity and coordination to operate office equipment
• simultaneously manage several objectives and reassign priorities.

Compensation:

• Depending on experience, CNC depth, and supervisory capability.

Additional Information

With colleagues stretching across the globe, we are proud of our diversity. To foster inclusivity, we run employee resource groups (ERGs) to provide a safe space for employees to connect and support each other. Our cross-business ERGs include Veterans, Pride Network, Black Employee Network, Women@Work Network, and Neurodiversity.

Across our company, we recognize excellence, culminating in the Smiths Excellence Awards, our annual celebration of the most extraordinary activities, people, and projects that best showcase our strengths and help drive our business forward. We announce these on our annual Smiths Day, a global celebration of Smiths around our network.

Join us for a great career with competitive compensation and benefits, while helping engineer a better future.

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