Now Hiring - Flex - Pre-Sales Engineer - Hyperscale in Littleton, MA

Full description of the position

Job Posting Start Date 01-13-2026 Job Posting End Date 02-23-2026 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

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. Position

Overview

The Pre-Sales Engineer 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.

Key Responsibilities

:

• 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
• Uses technical knowledge of products and associated development tools to assist customers on complex issues.
• Assists with the development of complex product roadmaps.
• Develops and maintains ongoing relationships with product and business development teams.
• Provides technical expertise during product development by defining customer product needs and translating these needs into new product recommendations and specifications.
• Reviews customer requirements, identifies and communicates potential issues and provides recommendations that will meet both the capabilities Flex and the specifications of the customer.
• Identifies and communicates existing and potential design issues both internally and externally.
• Coordinates product integration efforts between component suppliers, Flex, and the customer.
• Develops and presents technical seminars for customers and sales personnel to promote employers' manufacturing capabilities, services, available technologies, manufacturing process and quality.
• Works with customer representatives to coordinate vendor qualification surveys.
• Provides 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.
• Defines initial project/product scope and prepares project plans to meet customers' expectations.
• Prepares detailed project plans by documenting customers' requirements and incorporating design and manufacturing capabilities to meet customers' expectations.
• Prepares and maintains required documentation.
• May be required to sit at customer site.

Qualifications

:

• Bachelor's degree in Engineering
• Solid collaborating problem solving skills required.
• Independent self-starter
• Ability to read the room and respond appropriately.
• 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 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) $107,400.00 USD - $147,700.00 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 [please apply online] 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).