About the role#
Flex is looking for a Mechanical Engineering Co-Op to join our team in Libertyville, Illinois. This is a full-time role for the Winter 2027 term. You will report to the Senior Process Engineering Manager and work alongside our engineering and cross-functional teams on daily production tasks.
What you'll do#
- Support the engineering team with time studies and the review of CAD, drawings, and technical documentation.
- Create and update manufacturing work instructions and equipment checklists.
- Research and suggest support equipment to maintain continuous production.
- Design and monitor Engineering Design of Experiment (DOE) projects.
- Write reports and present findings to the engineering team.
- Participate in team meetings and assist with project work.
What you'll need#
- Current enrollment in a BS or MS program for Mechanical Engineering at a 4-year accredited university.
- A minimum GPA of 3.0.
- Experience with 2D and 3D CAD tools such as AutoCAD, Inventor, or Solidworks.
- Interest in working within a manufacturing environment.
- Strong communication skills and a collaborative mindset.
- Previous internship or co-op experience is a plus, as is knowledge of Lean or Six Sigma methodologies.
Location & details#
- This position is located on-site in Libertyville, Illinois.
- The role is full-time, requiring 40 hours per week.
- This is a paid position.
- We are unable to provide sponsorship for this role.
About Flex
Flex is a manufacturing partner that provides design, build, and logistics services for various brands. The company operates across sectors including medical, automotive, and consumer digital electronics. It maintains a global presence with headquarters in Austin, Texas. The firm employs over 56,000 people and functions as a public company.
How to get in at Flex
Securing an internship at Flex requires speed because high-volume manufacturing firms often receive a large number of applications. Intern Insider sends an instant alert the moment a role matching your target is published, so you apply among the first. Early applicants get seen before the pile grows, which helps you stand out in a crowded field. You can also use Intern Insider to surface the recruiters behind these roles. Reaching out directly to ask about the position or a referral materially improves response rates compared to waiting in a queue.



