Senior Mechanical Engineer - Marietta, OH
Thermo Fisher Scientific
Summary
Join our engineering team, where you'll help drive innovation in the development of sophisticated scientific instruments and laboratory equipment. As Mechanical Engineer (ULT), you will design, develop, and sustain 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 engineers and technicians to deliver high-performance, energy-efficient, and compliant cold storage solutions. You will partner closely with NPD design leadership and cross functional peers in Product Management, Controls Engineering, Quality, and Regulatory to define mechanical systems, maintain traceability, and ensure products meet customer, performance, and regulatory expectations throughout the product lifecycle.
Job description
What You Will Do
Mechanical System Development
- Design and develop mechanical 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 mechanical systems by utilizing design for reliability tools and performance sensitivity analysis.
- Design mechanical systems that meet customer requirements, time to market commitments and that are within the target cost of the projects.
- Create modular, scalable, and reusable solutions across multiple product platforms.
Simulation, Modeling & Innovation
- Analyze the structural behavior of the mechanical systems aided by Computer Aided Engineering (CAE) tools for component selection and overall mechanical 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 new technologies as assigned.
Product Development & Cross-Functional Collaboration
- Collaborate with refrigeration, electrical, and controls engineering teams through all phases of the toll-gate NPD process.
- Partner with manufacturing and operations teams to ensure Design for Assembly (DfA) and Design for Manufacturing (DfM).
- Support products manufactured across multiple global facilities.
- 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 systems 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
- Bachelor's degree in mechanical engineering, systems engineering, chemical engineering, physics, or related discipline
- Master's degree preferred
- 5+ years of hands-on experience developing mechanical systems
- Experience designing systems with sheet metal, engineered plastics, and foams, low to ultralow temperature applications in cold storage or HVAC/R products preferred
- Experience with structural modeling and simulation (CAD / FEA)
- 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
- Fundamental understanding of mechanical systems for refrigeration/HVAC
- Strong analytical, problem-solving, and root-cause analysis skills
- Experience using engineering tools such as CAD (SolidWorks preferred), PLM, and Microsoft Office
- Competency in simulation or other predictive design tools for design optimization
- Strong communication and cross-functional collaboration skills
- Excellent organizational skills in a fast-paced, multi-project environment
- Commitment to safety, quality, and operational excellence
Company overview
Thermo Fisher Scientific Inc. is the world leader in serving science, with annual revenue of approximately $40 billion. The company's mission is to enable customers to make the world healthier, cleaner, and safer. With over 100,000 employees globally, Thermo Fisher provides an unrivaled combination of innovative technologies, purchasing convenience, and pharmaceutical services through its industry-leading brands including Thermo Scientific, Applied Biosystems, Invitrogen, Fisher Scientific, Unity Lab Services, Patheon, and PPD. The company serves customers across healthcare, life sciences, applied markets, and pharmaceutical sectors, offering solutions that accelerate research, solve complex analytical challenges, improve patient diagnostics, and increase laboratory productivity. Headquartered in Waltham, Massachusetts, Thermo Fisher operates globally, delivering critical scientific products, services, and workflow solutions that support researchers, organizations, and companies in addressing some of the world's most pressing issues.