Flex is the diversified manufacturing partner of choice that helps market-leading brands design, build and deliver innovative products that improve the world.

A career at Flex offers the opportunity to make a difference and invest in your growth in a respectful, inclusive, and collaborative environment. If you are excited about a role but don't meet every bullet point, we encourage you to apply and join us to create the extraordinary.

Job Summary

Job Description

To support our extraordinary teams who build great products and contribute to our growth, we’re looking to add an Injection Mold Design Engineer located in Buffalo Grove IL.
Reporting to the Design and Engineering Manager, the Injection Mold Design Engineer will be responsible for designing and engineering tooling protocols for molds, jigs and fixtures as required to meet products specifications. Designing and developing components, products, equipment, and systems.

What a typical day looks like:
•    Design and engineer moderately complex tooling protocols for molds, jigs, and fixtures as per product specifications.
•    Participate in design reviews.
•    Critical thinking, strong communication and vision
•    Perform Design for Manufacturability (DFM) evaluation.
•    Implement cost effective tool design changes.
•    Collaborate with other team members to qualification, sampling, and final part approval.
•    Provide status reports as per established schedule
•    Prepare and maintain documentation related to tool room equipment.
•    Assisting in the design and development of engineering layouts, drawings, and documentation for components, assemblies, and subassemblies using CAD systems. Collaborating in the development of new or modified designs.
•    Assisting in establishing design standards and configurations, ensuring adherence to company standards and specifications.
•    Preparing ECOs and bills of materials that correspond to engineering drawings, ensuring accurate documentation and record-keeping.
•    Applying knowledge of design and engineering to recommend improvements to products and processes, contributing to the continuous improvement efforts of the organization.
•    Performing engineering tests, checkouts, and development engineering tasks. Diagnosing malfunctions, analyzing test results, and proposing and implementing changes to resolve problems.
•    Devising, fabricating, and assembling mechanical components or assemblies for various products. Conducting tests on complete units and components under operational conditions to investigate design and obtain data for development, standardization, and quality control.
•    Recording test procedures, results, and recommendations for changes in product or test methods. Maintaining software, documentation, and equipment to the latest revision or operational specifications.
•    Assisting engineers in developing and designing hardware and software required for testing customer products per their specifications.
•    Training technicians and operators on products, processes, and equipment, ensuring proper understanding and utilization.

Requirements:

• Bachelor's degree NOT required, but MUST have at least 3 years' work experience in the following:
• Plastic injection molding
• Mold design
• Tool design / engineering
• Interpretating layouts and drawings
• Capacities analysis
• Proficiency in MS Office, e.g. Excel, etc.
• Above work experience from the following types of companies required: mold design / mold making and/or medical device manufacturing (or similar).

Ideal/highly desirable work experience:

• Expert knowledge in injection plastic molding and tooling experience
• SolidWorks; Siemens/NX, and/or PRO-E
• Knowledge medical validations

JT05

AA01
MS14
CC11

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 07-31-2026 Job Posting End Date 10-03-2026

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.

$86,300.00 USD - $118,700.00 USD Annual

Job Category

Production Engineering

Is Sponsorship Available?

No

Flex is an Equal Opportunity Employer and employment selection decisions are based on merit, qualifications, and abilities. We do not discriminate based on: age, race, religion, color, sex, national origin, marital status, sexual orientation, gender identity, veteran status, disability, pregnancy status, or any other status protected by law. We're happy to provide reasonable accommodations to those with a disability for assistance in the application process. Please email [email protected] and we'll discuss your specific situation and next steps (NOTE: this email does not accept or consider resumes or applications. This is only for disability assistance. To be considered for a position at Flex, you must complete the application process first).