Pre-Sales Engineer - Hyperscale Liquid Cooling

Job Posting Start Date 01-20-2026 Job Posting End Date

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

JetCool, a Flex Company, delivers patented direct-to-chip liquid cooling systems purpose-built for AI and high-density compute. With our microconvective cooling technology and full-stack solutions-from SmartPlates to CDUs-we're redefining how the world's most demanding processors stay cool, efficient and operational at scale.

The Pre-Sales Engineer based in Littleton, MA will be accountable for providing technical guidance and information to customers on a pre-sales and post-sales basis to enable delivery of design, fabrication and assembly goals, per customers' expectations.

• Understand customer needs and translate them into technical solutions.
• Design and present solutions that align with business goals.
• Support sales teams during product demos, RFPs/RFIs and technical evaluations.
• Conduct proof-of-concept (PoC) deployments and workshops.
• Provide post-sales technical guidance and feedback to product teams.
• Collaborate with facilities and engineering teams to ensure solution feasibility.
• Use technical knowledge of products and associated development tools to assist customers on complex issues.
• Assist with the development of complex product roadmaps.
• Develop and maintain ongoing relationships with product and business development teams.
• Provide technical expertise during product development by defining customer product needs and translating these needs into new product recommendations and specifications.
• Review customer requirements, identify and communicate potential issues and provide recommendations that will meet both the capabilities Flex and the specifications of the customer.
• Identify and communicate existing and potential design issues both internally and externally.
• Coordinate product integration efforts between component suppliers, Flex and the customer.
• Develop and present technical seminars for customers and sales personnel to promote employers' manufacturing capabilities, services, available technologies, manufacturing process and quality.
• Work with customer representatives to coordinate vendor qualification surveys.
• Provide best in class, complex, technical assistance by answering and closing all customer and program management technical questions related to manufacturing capabilities including design, fabrication and assembly abilities.
• Define initial project/product scope and prepare project plans to meet customers' expectations.
• Prepare detailed project plans by documenting customers' requirements and incorporating design and manufacturing capabilities to meet customers' expectations.
• Prepare and maintain required documentation.
• May be required to sit at customer site.

• Bachelor's degree in mechanical engineering
• 5+ years of industry experience, with at least 2 years in sales engineering, consulting or technical pre-sales roles
• Experience with solution architecture, integration projects and customer-facing engagements
• Strong understanding of IT infrastructure, networking, cloud platforms or specialized technologies relevant to the product
• Ability to architect solutions and assess technical feasibility
• Familiarity with security, scalability and performance considerations
• Proficiency in responding to technical aspects of RFPs/RFIs and building solution documentation
• Experience with liquid cooling systems, data center design, or specialized hardware integration (especially relevant in your context)
• Ability to train sales teams on technical products and solutions
• Familiarity with commissioning and maintenance workflow
• Solid collaborating problem solving skills required
• Independent self-starter
• Ability to read the room and respond appropriately

• 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