Principal Thermal Mechanical Engineer

Flextronics America LLC; Littleton (CO); On-site; USD 153,500 - 211,000; Full time

Benefits offered by this job

Medical, dental, and vision plans

Life Insurance

Short-term and Long-term Disability

Matching 401(k) Contributions

Vacation and Paid Sick Time

Tuition Reimbursement

Job summary

Join Flextronics America LLC as a Systems Engineer, where you will play a crucial role in designing and implementing advanced system requirements for cutting-edge liquid cooling solutions. Located in Littleton, Colorado, you will leverage your 10+ years of engineering experience in a challenging and rewarding environment. With competitive pay ranging from $153,500 to $211,000, we offer a comprehensive benefits package to support your well-being and career growth.

Qualifications

• Typically requires 10 years of industry experience.
• Demonstrates mastery of expertise in multiple areas and industry.
• Impacts financial or operational success of the function.

Responsibilities

• Defines system specifications and working parameters.
• Coordinates design of subsystems and total system integration.
• Provides complex software development consultation.

Skills

Advanced operations

Technical skills

Customer relationship skills

Complex system development

Project management

Education

Bachelor's degree in engineering or related field

Job description

Job Posting Start Date 05-05-2026 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

Summary:

The “Systems Engineer” will be based in ……., reporting to ……

This role will be accountable for designing, defining, and implementing system requirements for complex customer systems/products and/or preparing studies and researching existing systems prior to the transition to manufacturing for new product introduction.

Responsibilities:

• Defines system specifications, input/output processes and working parameters for hardware/software compatibility.
• Coordinates design of subsystems and integration of total system.
• Identifies, explores, and resolves program deficiencies.
• Provides complex software development and consultation to prospective users.
• Tracks customer/project issues and drives resolution.
• Serves as main Project Development Engineer.
• Develops and maintains project schedule.
• Prepares and maintains Engineering NRE estimates.
• Interfaces with and guides customer product development calls and meetings.
• Acknowledges customer inquiries concerning complex system software and applications.
• Accountable for systems level development and testing requirements involving finalizing approved Vendor Lists and design of components which are unavailable.
• Provides complex technical assistance for sales presentations, product demonstrations, installation, and maintenance of company products to ensure that the system is functioning according to specifications.
• Provides technical direction, as required, for the implementation of industry regulations and best practices as they apply to product/systems.
• Develops product specifications where applicable.
• Develops and/or approves test plans and test reports.
• Defines pre-production system build logistics and deployment schedules.
• Develops engineering release documentation.
• Builds mini applications, as required, based on customer requirements to demonstrate feasibility of an application, often requiring rapid prototyping.
• Ensures ISO process conformance.

Qualifications:

• Typically requires bachelor's degree in engineering or related field or equivalent experience and training.
• Typically requires 10 years of industry experience.
• Demonstrates advanced operations, technical and people and/or process skills as well as customer (external and internal) relationship skills.
• 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
• Demonstrates mastery of expertise in multiple areas and industry
• 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.
• Defines/ determines and approves functional methods, standards, policies and procedures. Makes decisions for sections/sub-functions. Decisions may affect multiple sections/sub-functions. Decisions may affect the site.

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 USDAnnual

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 [e-mail] 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).