Senior Refrigeration Engineer - Marietta, OH

ASPBP; Marietta, Northern (OH, KY); Hybrid; USD 110,000 - 160,000; Full time

Benefits offered by this job

Relocation support may be available

Job summary

Thermo Fisher Scientific in Marietta, OH seeks an experienced Refrigeration Engineer (Adv Dev) to design cascade vapor‑compression systems for ULT freezers and cold storage. You will collaborate with engineering peers to deliver high‑performance, compliant cooling solutions.

In this hands‑on role, you’ll model thermal behavior, develop test plans, and guide products from concept to market while aligning with regulatory and manufacturing requirements. Travel up to 10% may be required.

Qualifications

• 5+ years hands-on experience developing vapor‑compression systems for cold storage or HVAC/R products, cascade systems preferred.
• Experience using natural refrigerants and other low GWP refrigerants in system designs.
• Experience with thermal system modeling, simulation, and performance testing.

Responsibilities

• Refrigeration System Development: Design and develop cascade vapor‑compression systems for ULT freezers and cold storage platforms.
• Develop specifications for system-level, subsystem and component performance.
• Develop and execute test plans to validate performance using reliability tools and data analysis.
• Design refrigeration systems meeting customer requirements, time-to-market, and target project costs.
• Create modular, scalable refrigeration solutions across multiple product platforms.
• Simulation, Modeling & Innovation: Analyze thermal behavior with thermo‑physical tools for component selection and system design.
• Perform design trade studies using modeling and empirical data to optimize performance and energy use.
• Participate in advanced development initiatives to mature next‑generation refrigeration technologies.
• Product Development & Cross‑Functional Collaboration: Collaborate with mechanical, electrical and controls teams during technology development.
• Deliver TRL maturation of innovative technologies prior to NPD introduction.
• Partner with manufacturing to ensure Design for Assembly and Design for Manufacturing.
• Contribute to roadmaps for components, subsystems and systems.
• Requirements, Compliance & Traceability: Verify traceability from customer and regulatory requirements.
• Ensure designs are Designed for Compliance to meet UL, IEC, FDA, CE, CSA, Energy Star.
• People and Culture: Engage in a culture of safety, quality, accountability, and continuous improvement.
• Travel: Up to 10% domestic travel.

Skills

Analytical thinking

Cross-functional collaboration

Root-cause analysis

Safety and quality mindset

Education

Bachelor's degree in mechanical engineering

Coursework in thermodynamics, heat transfer and fluid mechanics

Master's degree preferred

Tools

EES

Thermal modeling software

Data acquisition & testing tools

Job description

Work Schedule

Standard (Mon-Fri)

Environmental Conditions

Office

Job Description

As part of the Thermo Fisher Scientific team, you'll discover meaningful work that makes a positive impact on a global scale. Join our colleagues in bringing our Mission to life every single day to enable our customers to make the world healthier, cleaner and safer. We provide our global teams with the resources needed to achieve individual career goals while helping to take science a step beyond. Whether our customers are accelerating life sciences research, solving complex analytical challenges, improving patient diagnostics and therapies, or increasing productivity in their laboratories, we are here to support them.

To learn more about our Marietta, Ohio site, including the work we do, our culture, and what makes the location unique, visit our Marietta careers page and watch the site video: [Marietta | Thermo Fisher Scientific](
DESCRIPTION:)

DESCRIPTION

Join our engineering team, where you'll help drive innovation in the development of sophisticated scientific instruments and laboratory equipment. As Refrigeration Engineer (Adv Dev), you will design and develop cascade refrigeration systems supporting Thermo Fisher's cold storage and ultra-low temperature (ULT) product portfolio.

In this hands‑on role, you will collaborate with other refrigeration engineers and technicians to deliver high‑performance, energy‑efficient, and compliant cooling solutions. You will partner closely with NPD design leadership and cross‑functional peers in Product Management, Controls Engineering, Quality, and Regulatory to define refrigeration systems, maintain traceability, and ensure products meet customer, performance, and regulatory expectations throughout the product lifecycle.

WHAT YOU WILL DO

• Refrigeration System Development
• Design and develop cascade vapor‑compression systems used in ULT freezers and cold storage platforms.
• Develop specifications for system‑level, subsystem and component performance.
• Develop and execute test plans to validate the performance of newly developed refrigeration systems by utilizing design for reliability tools and performance sensitivity analysis.
• Design refrigeration systems that meet customer requirements, time to market commitments and that are within the target cost of the projects.
• Create modular, scalable, and reusable refrigeration solutions across multiple product platforms.
• Simulation, Modeling & Innovation
• Analyze the thermal behavior of the refrigeration system with thermo‑physical tools for component selection and overall refrigeration system design.
• Complete design trade studies using modeling and empirical data to optimize system performance and energy consumption.
• Participate in advanced development initiatives to mature next‑generation refrigeration technologies as assigned.
• Product Development & Cross‑Functional Collaboration
• Collaborate with mechanical, electrical, and controls engineering teams during technology development.
• Deliver TRL maturation of innovative technologies and solutions prior to NPD introduction.
• Partner with manufacturing and operations teams to ensure Design for Assembly and Design for Manufacturing.
• Contribute to component, sub‑system, and system‑level technology roadmaps.
• Requirements, Compliance & Traceability
• Complete verification activity to confirm traceability from customer and regulatory requirements
• Ensure refrigeration designs are Designed for Compliance to meet regulatory and certification requirements (e.g., UL, IEC, FDA, CE, CSA, Energy Star).
• People and Culture
• Engage in a culture of safety, quality, accountability, and continuous improvement.
• Travel: Up to 10% domestic travel.

REQUIREMENTS

Education

• Bachelor's degree in mechanical engineering, systems engineering, chemical engineering, physics, or related discipline
• Coursework in thermodynamics, heat transfer, and fluid mechanics strongly preferred
• Master's degree preferred

Experience

• 5+ years of hands‑on experience developing vapor‑compression systems for cold storage or HVAC/R products, cascade systems preferred.
• Experience using natural refrigerants and other low GWP refrigerants in system designs.
• Experience with thermal system modeling, simulation, and performance testing
• Experience analyzing empirical test data to guide design decisions
• Familiarity with data acquisition systems, automated testing, and technical documentation
• Familiarity with Lean / PPI methodologies and continuous improvement systems

Knowledge, Skills, and Abilities

• Fundamental understanding of vapor‑compression and cascade refrigeration systems
• Strong analytical, problem‑solving, and root‑cause analysis skills
• Competency in using engineering tools such as EES, thermal modeling software, and refrigerant properties and selection
• Knowledge of refrigeration system testing methods and equipment
• Strong communication and cross‑functional collaboration skills
• Excellent organizational skills in a fast‑paced, multi‑project environment
• Commitment to safety, quality, and operational excellence

Relocation support may be available.