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Flex Mech Tech Jobs (NOW HIRING)

Together, we're not just advancing technology - we're redefining cooling standards to create a more ... Please email accessibility@flex.com and we'll discuss your specific situation and next steps (NOTE ...

Hiring for flex-40 shift, Monday-Friday Summary of Position: The Process Control Technician (PCT ... Mechanical Technology. * On the Job Training - 3 years minimum in one of the following areas:

Hiring for flex-40 shift, Monday-Friday Summary of Position The Process Control Technician (PCT) is ... Electrical Technology Electronics Technology Mechanical Technology 2. Military - 2 years minimum ...

... testing technologies and manufacturing techniques. * Work with CNC router to produce mechanical ... No Flex is an Equal Opportunity Employer and employment selection decisions are based on merit ...

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Mechanical Engineer

Blackwood, NJ · On-site

$72K - $98K/yr

Cold Technology is a premier engineering and design-build firm leading the Mid-Atlantic region in ... Generous Paid Vacation, Paid Holidays, and Paid Flex Time Off. * Company-Paid Life Insurance and ...

Sr. Mechanical Development Engineer

Littleton, MA · On-site

$108K - $142K/yr

At JetCool, a Flex company, we're at the forefront of liquid cooling innovation, delivering ... Together, we're not just advancing technology - we're redefining cooling standards to create a more ...

Flex is the diversified manufacturing partner of choice that helps market-leading brands design ... Devises, fabricates and assembles new or modified mechanical components or assemblies for products ...

Tool Repair Technician

Orangeburg, SC

$19.75 - $21.50/hr

A career at Flex offers the opportunity to make a difference and invest in your growth in a ... The " Equipment Maintenance Tech " will be based in ..... , reporting to ..... Mechanical: Repairs ...

A career at Flex offers the opportunity to make a difference and invest in your growth in a ... Responsible for repairs and troubleshooting of mechanical and electrical assemblies within our ...

A career at Flex offers the opportunity to make a difference and invest in your growth in a ... Tech " will be based in Austin, Texas , reporting to Maintenance Supervisor . Mechanical: Repairs ...

Equipment Automation Technician

Austin, TX · On-site

$41K/yr

Flex is the diversified manufacturing partner of choice that helps market-leading brands design ... Tech " will be based in Austin, Texas , reporting to Maintenance Supervisor . Mechanical: Repairs ...

Flex is the diversified manufacturing partner of choice that helps market-leading brands design ... Tech " will be based in Austin, Texas , reporting to Maintenance Supervisor . Mechanical: Repairs ...

Flex is the diversified manufacturing partner of choice that helps market-leading brands design ... Tech " will be based in Austin, Texas , reporting to Maintenance Supervisor . Mechanical: Repairs ...

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Flex Mech Tech information

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How much do flex mech tech jobs pay per hour?

As of Jul 2, 2026, the average hourly pay for flex mech tech in the United States is $25.89, according to ZipRecruiter salary data. Most workers in this role earn between $21.15 and $30.77 per hour, depending on experience, location, and employer.
What are the most commonly searched types of Mech Tech jobs? The most popular types of Mech Tech jobs are:
Principle Thermal Mechanical Engineer

Principle Thermal Mechanical Engineer

Flex

Littleton, MA • On-site

$153K - $211K/yr

Full-time

Medical, Dental, Vision, Life, Retirement, PTO

Posted 23 days ago


Job description

Job Posting Start Date 06-08-2026 Job Posting End Date 08-28-2026

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 Principle Thermal Mechanical Engineer located in Littleton, MA.

Reporting to the Product Manager the Principle Thermal Mechanical Engineer will play a pivotal role in the early phases of product development and serving in a guidance capacity through product maturation. Our products drive sustainability across the data center infrastructure by allowing higher coolant temperatures and by driving more complete heat capture for liquid cooling. The Principal Mechanical Engineer will provide technical leadership, mentorship, and hands-on expertise in mechanical design, fluid dynamics, and heat transfer but also work closely with customers in communicating the art of the possible with JetCool technology and building a strong customer relationship on a technical level.

What a typical day looks like:

  • Lead the initial design, analysis, and optimization of complex fluid systems from concept initial CAD to final detailed CAD and drawing for liquid cooling, including cold plates, pumps, fluids, tubing, and heat exchangers, for the latest computer processing chipsets.
  • Collaborate with customer and partner teams to integrate fluid systems into overall product designs.
  • Conduct fluid flow simulations, analyses, and tests to ensure efficient and reliable performance of fluid systems under various operating conditions.
  • Perform detailed calculations and analysis of fluid dynamics, pressure drops, thermal performance, and material compatibility.
  • Develop and review engineering specifications, and documentation for fluid system and heat transfer components and assemblies, ensuring compliance with industry standards and regulatory requirements.
  • Assist in maintaining a strong best practice culture and driving additional foundational knowledge and IP through research.
  • Identify technical gaps to advocate for research and development and lead research projects, maximizing product impact and benefit.
  • Provide technical guidance and mentorship to junior engineers, fostering a culture of continuous learning and development.
  • Participate in design reviews, presenting technical findings and recommendations to internal and external stakeholders.
  • Contribute to the development of new product concepts and innovations in fluid system design, keeping abreast of industry trends and emerging technologies.
  • Support the resolution of technical challenges and issues related to fluid systems throughout the product lifecycle.

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

  • Master's (Thesis required) degree in Mechanical Engineering or related field.
  • Minimum of 7 years of post-collegiate experience in designing and engineering fluid systems, preferably within the data center thermal management/ cooling, automotive, medical, or nuclear industries.
  • Minimum of 3 years working at senior or principal engineer level in an industrial setting.
  • Profound expertise in fluid dynamics, thermodynamics, and heat transfer, with a strong foundation in engineering principles.
  • Extensive experience in SolidWorks CAD, complex part and assembly drawings, GD&T and DFMs.
  • Ability to independently develop product concepts, performance analysis and design experiments. Track record of new product development, preferably thermal fluid products.
  • Strong analytical and problem-solving skills, with the ability to effectively troubleshoot and optimize fluid system performance.
  • Excellent communication and documentation skills to convey complex technical concepts to both technical and non-technical audiences.

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)$153,500.00 USD - $211,000.00 USDAnnualJob CategoryDesign, 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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About Flex Personnel

Sourced by ZipRecruiter

The Flex Team is made up of Staffing Industry experts committed to serving the needs of businesses and workers by bringing people together. We are guided by our Core values Integrity, Courtesy, and Respect. At Flex we bring Businesses and People together. We carefully assess both the needs of our Business clients and the complete profiles of each candidate, and then make the connections we believe will be most mutually beneficial. With offices in select markets throughout the Country, We are continually expanding our industry reach nationwide.

Industry

Recruiting and staffing services

Company size

11 - 50 Employees

Headquarters location

Dallas, TX, US

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