Sr, Manufacturing Engineer

At JetCool, a Flex company, we're at the forefront of liquid cooling innovation, delivering advanced solutions that empower our partners in AI and high-performance computing. United by a shared purpose, our teams are pushing the limits of what's possible and tackling complex challenges.

A career at JetCool offers the opportunity to make a real impact by helping build smarter, more sustainable data centers. Together, we're not just advancing technology - we're redefining cooling standards to create a more sustainable tomorrow.

Job Summary

To support our extraordinary teams who build great products and contribute to our growth, we're looking to add a Sr. Manufacturing Engineer located in Littleton, MA.

Reporting to the Sr Director, Operations the Sr. Manufacturing Engineer will Plans, directs, and coordinates manufacturing processes by providing technical support maintenance of manufacturing methods by performing the following duties in the manufacturing phase of the product lifecycle.

What a typical day looks like:

• Understand manufacturing and test equipment concepts, technologies and techniques
• Designs manufacturing processes within schedule and budgetary parameters.
• Develops, evaluates, and improves manufacturing methods.
• Define equipment maintenance requirements, identify root-causes of equipment failures and develop hands-on maintenance skills.
• Work with other engineering stakeholders and customers on problem solving and continuous improvement to the design of equipment and products and may develop corrective and preventive action plans
• May be involved in development and and update of PFMEA for new products
• May participate in control plan development
• Write and update work instructions and other documents (e.g. specifications, procedures)
• Examines and designs layout of equipment and workspace for maximum efficiency.
• Confers with production group concerning product design and tooling to ensure efficient production methods.
• Coordinates with customers to identify product specifications and design changes and responds to customer request.
• Provides information for management recommendations from a technical and technical cost perspective.
• Confers with management, engineering, and other staff regarding manufacturing capabilities, production schedules, and other considerations to facilitate production processes.
• Applies statistical methods to estimate future manufacturing requirements and potential.

The experience we're looking to add to our team:

• Typically requires 10 years of related experience
• Demonstrates detailed expertise in very complex functional/technical area or broad breadth of knowledge in multiple areas; understands the strategic impact of the function across sites.
• Impacts the medium-term (semi-annual/ annual) direction and financial or operational success of the function.
• Approves and/or creates functional processes or technologies.
• Executes and provides input to functional strategic plans and objectives for site. Assists in developing plans for structuring and implementing major initiatives.
• Instills appropriate behavior in others in support of Flex values. Supports strategic direction for the function.

BO18

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 10-09-2026 Job Posting End Date 12-31-2026
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.
$146,700.00 USD - $201,700.00 USD Annual

Job Category

Production Engineering

Is Sponsorship Available?
No

JetCool 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 accessibility@flex.com 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 JetCool, you must complete the application process first).

Client-provided location(s): Boxborough, MA

Job ID: Flex-WD231407

Employment Type: FULL_TIME

Posted: 2026-10-10T21:49:13