Senior CNC Spring Coiling Technician (WAFIOS)

Flex; Libertyville (IL); On-site; USD 65,000 - 95,000; Full time

Job summary

Flex is seeking an experienced Engineering Technician to support high-volume medical device spring production using WAFIOS equipment in Libertyville, IL. The role covers machine setup, troubleshooting, and continuous improvement across engineering, quality, maintenance, and production teams.

You will analyze spring performance, participate in DOE and CAPA, and train operators on setup, operation, and inspection processes to ensure product quality and process efficiency.

Qualifications

• 8+ years of experience in spring manufacturing, precision manufacturing, or automated production equipment.
• Hands-on with WAFIOS spring coiling machines (FUL, FMU, or equivalent).
• Strong understanding of spring parameters: free length, outside diameter, pitch, spring rate, load testing.
• Experience troubleshooting CNC spring coiling equipment and related automation systems.
• Ability to read and interpret engineering drawings, blueprints, specifications, and tooling designs.
• Experience with preventive maintenance and equipment reliability programs.
• Familiarity with FDA-regulated, medical device or highly regulated manufacturing environments.
• Proficiency with PC-controlled manufacturing equipment and machine interfaces.

Responsibilities

• Set up, adjust, operate, and troubleshoot WAFIOS CNC spring coiling machines including tooling, guides, coiling points, pitch tools, and cutoff systems.
• Support production of compression, extension, and torsion springs used in medical device applications.
• Analyze spring characteristics such as free length, OD, pitch, spring rate, squareness, and load requirements.
• Diagnose and resolve manufacturing issues related to spring geometry, machine setup, tooling wear, material variation, and equipment performance.
• Perform first-piece inspections and process verifications using calipers, micrometers, optical measurement systems, force testers, and spring load testers.
• Investigate process deviations and implement corrective actions to improve quality and efficiency.
• Conduct engineering trials, DOE activities, and capability evaluations.
• Collaborate with engineers to optimize designs, methods, tooling concepts, and settings.
• Support process validation (IQ/OQ/PQ) and CAPA investigations.
• Develop and document machine setup standards and troubleshooting guides.
• Perform preventive maintenance and replacement of worn components.
• Train operators and technicians on setup, operation, inspection procedures.
• Assist with startup, qualification, and commissioning of new equipment.

Skills

Spring manufacturing

CNC troubleshooting

Mechanical aptitude

Root cause analysis

SPC

Process validation

Training & mentoring

Continuous improvement

Tools

WAFIOS machines (FUL/FM U) programming

Spring coiling tooling & adjustments

Electrical troubleshooting (motors, sensors, fuses)

Pneumatic systems

PC-controlled equipment & interfaces

Job description

Flex is seeking an experienced Engineering Technician to support high-volume medical device spring production using WAFIOS equipment in Libertyville, IL. The role covers machine setup, troubleshooting, and continuous improvement across engineering, quality, maintenance, and production teams.

You will analyze spring performance, participate in DOE and CAPA, and train operators on setup, operation, and inspection processes to ensure product quality and process efficiency.