Flex

Tooling Engineer-1

Flex$122K — $168K *
Manufacturing & Automotive
8 - 10 years of experience
Job Overview by Ladders

Qualifications

  • Bachelor's Degree or equivalent experience
  • 8+ years of experience in thermoplastics and injection molding
  • Strong troubleshooting skills for tooling defects
  • Experience with external toolmakers and global suppliers
  • Ability to interpret complex CAD models
  • Knowledge of multi-cavity mold design and various engineering plastics

Responsibilities

  • Prepare and maintain tool room equipment documentation
  • Lead design of complex injection molds to meet specifications
  • Review and approve mold designs for tight-tolerance tools
  • Conduct Design for Manufacturability (DFM) reviews
  • Evaluate mold flow analysis results and recommend changes
  • Serve as the technical lead with tool vendors from concept to qualification
  • Analyze mold trials and drive corrective actions for quality issues
  • Implement improvements for tooling efficiency and longevity
  • Communicate design intent to cross-functional teams
  • Establish tooling standards and maintenance recommendations
  • Support process control strategy development
  • Provide tooling status updates to leadership

Benefits

  • Full range of medical, dental, and vision plans
  • Life Insurance
  • Short-term and Long-term Disability
  • Matching 401(k) Contributions
  • Vacation and Paid Sick Time
  • Tuition Reimbursement
Full Job Description
Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we're looking to add a Tooling Engineer located in Libertyville, IL.

Reporting to the Sr. Process Engineering Manager, the potential candidate would be responsible for designing and engineering tooling protocols for molds, jigs and fixtures as required to meet products specifications.

What a typical day looks like:
  • Prepare and maintain documentation related to tool room equipment. Lead design and engineering of complex injection molds to meet product and process requirements.
  • Review and approve mold designs for multi-cavity, tight-tolerance tools including hot runner and valve gate systems.
  • Own Design for Manufacturability (DFM) and Design for Tooling reviews with internal teams and toolmakers.
  • Evaluate and approve mold flow analysis results and recommend design changes based on simulation and processing needs.
  • Define tooling specifications including steel selection, cooling strategy, gating, venting, ejection, and wear components.
  • Serve as technical lead with tool vendors from concept through design, build, FAT, and tool qualification.
  • Support mold trials, sampling and validation activities; analyze results and drive corrective actions.
  • Troubleshoot complex tooling and part quality issues (flash, sticking, warp, cosmetic defects, dimensional variation).
  • Implement cost-effective tooling improvements to increase robustness, cycle time performance, and tool life.
  • Review and interpret tool design files and clearly communicate design intent to cross-functional stakeholders.
  • Establish tooling standards, best practices, and preventive maintenance recommendations.
  • Support process control strategy development in partnership with process engineering.
  • Provide regular tooling status updates and technical risk assessments to program and engineering leadership.
  • Maintain tooling documentation including design records, change history, qualification reports, and maintenance plans.

The experience we're looking to add to our team:
  • Bachelor's Degree in related field or equivalent experience and training for 8+ years of related experience in thermoplastics, thermosets, injection molding (e.g. product design, validation of tools), mold flows, troubleshooting and resolving tooling issues, strong familiarity with molding processes.
  • Demonstrated capability troubleshooting tooling-related defects and performance issues.
  • Experience working directly with external toolmakers and global suppliers.
  • Ability to read and interpret complex CAD models and tooling assemblies.
  • Strong understanding of injection molding processes and their interaction with tool design.
  • Experience with multi-cavity mold design and validation, Engineering plastics including PC/ABS, Acetal (POM), and similar resins, Hot runner and valve gate systems, Tight tolerance and cosmetic parts


What you'll receive for the great work you provide:
  • Full range of medical, dental, and vision plans
  • Life Insurance
  • Short-term and Long-term Disability
  • Matching 401(k) Contributions
  • Vacation and Paid Sick Time
  • Tuition Reimbursement


Application Deadline:

Applications for this job position will be accepted for at least five days following the job posting start date below and continuing until the end date below or until the position is filled. This posting may close sooner due to application volume.
Job Posting Start Date 06-22-2026 Job Posting End Date 07-31-2026
The base pay range for this position is provided below. The final base rate offered will be determined using job-related, non-discriminatory criteria, including but not limited to experience, qualifications, geographic location, education, external market data, and internal equity.
$122,600.00 USD - $168,600.00 USD Annual

Job Category
Production Engineering

Is Sponsorship Available?
No

About Flex

Flex Ltd. is an American Singaporean-domiciled multinational electronics contract manufacturer. It is the third largest global electronics manufacturing services (EMS), original design manufacturer (ODM) company by revenue, behind only Pegatron for what concerns original equipment manufacturers. Flex has manufacturing operations in over 30 countries, totaling approximately 200,000 employees.
Learn more about Flex
Size
172,648 employees
Market Cap
$9.7 billion
Industry
Net Income
$421 million
Founded
2016
5 Year Trend
+1.8%
Revenue
$23.3 billion
NASDAQ

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