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Sr. Manufacturing Engineer (CNC)

Manufacturing Co
Bolingbrook, IL Contractor
POSTED ON 3/29/2026
AVAILABLE BEFORE 4/27/2026

Experience level: Mid-senior 

Experience required: 10 Years 

Education level: Bachelor’s degree 

Job function: Engineering 

Industry: Automotive

Relocation assistance: No 

Visa sponsorship eligibility: No


Position Summary:

  • Seeking a highly experienced Senior Manufacturing Engineer with deep expertise in CNC machining within the automotive industry.
  • This role is responsible for optimizing machining processes, improving throughput and quality, and leading CNC programming and process development initiatives across production lines.
  • The ideal candidate is a hands-on, 'working' engineer capable of troubleshooting, programming, and driving continuous improvement on the shop floor.


Key Responsibilities:

  • Optimize machining processes to improve OEE, reduce scrap, and increase throughput.
  • Develop, modify, and validate CNC programs for lathes and milling machines (vertical and horizontal). Lead toolpath development and cutting strategy optimization for automotive components.
  • Identify and implement optimal tooling, inserts, and workholding solutions.
  • Troubleshoot machining issues including cycle time, tool wear, chatter, and dimensional variation.
  • Collaborate with Quality to ensure process capability (Cp/Cpk) and first-piece validation.
  • Drive continuous improvement initiatives using Lean manufacturing and Six Sigma principles.
  • Develop and maintain process documentation, work instructions, and standards.
  • Work cross-functionally with operations, maintenance, and quality teams


Required Qualifications:

  • Bachelor’s degree in Engineering or equivalent hands-on experience.
  • 5 years of CNC programming and machining experience in automotive manufacturing.
  • Expertise in CNC lathes and milling machines (Fuji, Mori Seiki preferred).
  • Proficiency in CAM software (Mastercam or similar) and AutoCAD.
  • Strong understanding of GD&T, blueprint reading, and tolerance stack-ups.
  • Experience with CMMs, Zoller tool presetters, and measurement systems.
  • Knowledge of carbide tooling, inserts, and tool holders.
  • Experience with fixtures (hydraulic and pneumatic) and workholding design.
  • Strong knowledge of SPC, capability studies, and process control.
  • Hands-on troubleshooting and shop floor support experience.      


Preferred Qualifications:

  • Experience in high-volume automotive production environments.
  • Background in multi-axis machining.
  • Familiarity with ERP/MES systems.
  • Six Sigma or Lean certification.
  • Experience leading process improvement projects.

  • Hourly Wage Estimation for Sr. Manufacturing Engineer (CNC) in Bolingbrook, IL
    $49.00 to $58.00
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