Thermo Fisher Scientific Mechanical Engineer in Sunnyvale, California

Job Description

When you’re part of the team at Thermo Fisher Scientific, you’ll do important work, like helping customers in finding cures for cancer, protecting the environment or making sure our food is safe. Your work will have real-world impact, and you’ll be supported in achieving your career goals.

What will you do?

  • Work under the supervision of a Senior Engineer, to define, design, test, and document parts and sub-systems.

  • Support sustaining engineering projects to achieve improvements in quality, cost, and replacing components at end of life.

  • Assist Senior Engineers to produce Product Development File documents including all Specification Documents and Planning documents.

  • Use 3D CAD (CREO) to perform mechanical design, modeling, and detailing of parts, assemblies, and drawings.

  • Compile and analyze operational, test, and research data to establish performance standards for newly designed or modified equipment or product. Supports development of test plans.

  • Mechanical or electro-mechanical designing, modeling, and detailing of parts and assemblies. Providing all documentation for manufacturing of design.

  • Coordinate with support personnel in ordering parts and assembling breadboards (sometimes foam-core), prototypes.

  • Assist with debugging and testing the assemblies and products to ensure performance, quality, reliability, and meeting cost targets.

  • Perform mechanical engineering analysis of part and system concepts to determine feasibility and theoretical performance related to expected specifications.

  • Write and release Engineering Change Orders (ECOs) for engineering drawings and Bills of Material (BOMs).

  • Assist in the transferring of products to Manufacturing. Supporting Manufacturing Engineering with process and tooling development.

How will you get here?


  • Bachelor’s degree in Mechanical Engineering, Materials Science, or equivalent, with 2+ years related work experience

  • Experience using 3D CAD software (CREO/Windchill/SolidWorks)

  • Knowledge of Finite Element Analysis (FEA). CREO Simulate is a plus

  • Knowledge of ANSI drafting standards and GD&T

  • Excellent communication skills. Must be able to clearly communicate technical content to peers and management, support conclusions and recommendations with calculations, test data, industry literature, etc.

  • Excellent computer skills, including Microsoft Word, Excel, and PowerPoint

  • Excellent organizational and time management skills

  • Strong analytical and troubleshooting skills to understand system interfaces and be able to quickly analyze, troubleshoot, and determine root cause of issues

Preferred Qualifications:

  • Master’s degree in Mechanical Engineering, Material Science, or equivalent, with limited work experience

  • Knowledge of a Product Lifecycle Management (PLM) system

  • Experience performing ECOs and creating/updating BOMs. SAP and Oracle is a plus

  • Experience with fluidic devices (e.g. pumps, transducers, tubing, fittings) in the medical device or scientific instrument industry

  • Experience designing electro-mechanical devices

  • Knowledge of applied materials science

  • Knowledge of manufacturing thermoplastic components, (machined and injection molded), including PEEK, PTFE, UHMW, and others

  • Knowledge of manufacturing sheet metal

  • Experience developing under ISO 9001 quality management systems

  • Experience with Computational Fluid Dynamics (CFD). FloEFD is a plus

  • Proficiency using common machine shop power tools (e.g. mill, lathe, drill-press)

At Thermo Fisher Scientific, each one of our 65,000 extraordinary minds has a unique story to tell. Join us and contribute to our singular mission—enabling our customers to make the world healthier, cleaner and safer.

Apply today! at

Thermo Fisher Scientific is an EEO/Affirmative Action Employer and does not discriminate on the basis of race, color, religion, sex, sexual orientation, gender identity, national origin, protected veteran status, disability or any other legally protected status.