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Senior Mechanical Engineer (Thermal)

Aspen Systems
Marlborough, MA Full Time
POSTED ON 6/7/2026
AVAILABLE BEFORE 7/6/2026
Description

Aspen Systems, LLC is a leading innovator in advanced thermal management solutions. Aspen is primarily focused on developing and manufacturing the world’s smallest custom OEM refrigeration systems across the defense, life science, medical, semiconductor, and commercial markets. At Aspen, we blend breakthrough technology with real-world engineering to deliver performance, reliability, and efficiency.

Job Description

Aspen Systems, LLC is looking for a motivated engineer to work on the design, development, and verification of miniature cooling systems. The candidate is expected to follow good engineering practices in the documentation of system designs. Candidates must be willing to expand their function beyond engineering development – Aspen engineers are frequently involved with transitioning designs to manufacturing and support of production.

Responsibilities

  • Design of compact refrigeration systems to meet customer-driven product requirements
  • Develop custom thermal solutions from concept phase through manufacturing release, working with the customers as well as Aspen’s internal manufacturing and quality teams.
  • Interact with customers to define system requirements and interface
  • Conduct design reviews throughout the development process in an efficient and timely manner
  • Develop and execute design verification protocols in accordance with engineering best practice
  • Generate detailed engineering documentation (drawings of parts, subassemblies, etc.)
  • Manage project schedules and budgets with internal and external resources
  • Conduct data analysis and generate written test reports summarizing system performance
  • Design systems with attention to ease of manufacturability and minimization of system cost

Work with suppliers to minimize component cost and complexity

Requirements

Qualifications

  • BS or MS in mechanical engineering or equivalent field
  • 10 – 20 years of experience working in an engineering environment
  • Excellent communication, organization, and interpersonal skills
  • Experience generating and reviewing engineering documentation, such as product specifications, system schematics, test procedures, and test reports
  • Experience with hands-on laboratory testing of electrical and mechanical systems
  • Proficient in SolidWorks (or other CAD software), including creating engineering drawings for sheet metal, machined parts, plastics, or other parts and assemblies
  • Fundamental knowledge of refrigeration systems and heat transfer
  • Self-motivated: able to work independently as well as part of a product development team
  • Basic knowledge of engineering planning activities through use of Gantt charts
  • Experience working in an ISO 9001-compliant environment
  • Proficient in MS Office

Certain positions with Aspen Systems, LLC require access to controlled goods and technologies subject to ITAR or EAR compliance. Applicants for these positions may need to be "U.S. Persons," as defined in these regulations. Generally, a "U.S. Person" is a U.S. citizen, lawful permanent resident, or an individual who has been admitted as a refugee or granted asylum.

Salary.com Estimation for Senior Mechanical Engineer (Thermal) in Marlborough, MA
$103,682 to $124,677
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