Systems Engineer - Controls Job Listing at Flex in Littleton, MA (Job ID WD200190)

Description

Job Posting Start Date 10-23-2025 Job Posting End Date 12-31-2025

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 Systems/ Control Engineer. Will be based in Littleton, MA, reporting to the Product Manager the Sr Systems/ Control Engineer will be working closely with the broader engineering team ensuring JetCool's CDUs excel in predictive data analysis and upset condition response. This role will also lead planning for software upgrades and own the controls roadmap for the CDU product line.

What a typical day looks like:

• Define and own the system-level specifications for CDU products.
• Lead the development of system models that characterize both steady-state and transient responses of coolant distribution units.
• Lead the design of controls architecture and sensing infrastructure for CDUs.
• Drive the development of controls and sensing algorithms.
• Develop comprehensive test plans for controls, sensing, and software validation.
• Collaborate with the product team to address controls and sensing-related DFMEA and PFMEA mitigation strategies.
• Analyze test and performance data to refine control algorithms and update system models.
• Identify opportunities for performance improvement and support R&D efforts evaluating future enhancements.
• Contribute to a strong best-practice culture and help expand foundational knowledge and intellectual property.
• Lead root cause investigations for system failures.

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

• Bachelor of Science degree in Mechanical Engineering or a related discipline.
• Minimum of 5 years of post-collegiate experience working in hardware product development, preferably in the data center cooling, automotive, aerospace, medical, or nuclear industries.
• Proven ability to develop hardware, control systems, and comprehensive system specifications.
• Strong communication skills with a demonstrated ability to collaborate across multidisciplinary teams and support effective software integration.
• Experience implementing control algorithms in product development.
• Master's of Science degree, 8+ years of experience, startup experience and familiarity with industrial I/O and automation systems.
• Proven experience in NPI process participation and/or leadership.
• Familiarity with data center cooling infrastructure (cooling modules, CDUs, dry coolers, chillers).
• Proven experience in constructing fluid/thermal system models.
• Familiarity with relevant industry and regulatory standards related to fluid systems and mechanical engineering.
• Previous involvement in the development of fluid systems for data center cooling, automotive, medical, or nuclear applications.
• Publications, patents, or contributions to industry-related conferences or forums.

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

Pay Range (Applicable to Massachusetts) $149,700.00 USD - $205,900.00 USD Annual Job Category Design, Process & Technology 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).

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