Senior R&D Test Engineer

RheoSense is seeking a highly experienced Senior R&D Test Engineer to lead the performance evaluation, reliability assessment, technical investigation, verification, and product testing activities associated with advanced scientific instrumentation and measurement technologies.

At RheoSense, you can build an excellent job that grows into a meaningful and rewarding career. Our comprehensive benefits and workplace culture include:

• Financial stability through competitive compensation, performance incentives, and retirement plans
• Training and professional development to support long‑term career growth
• Health and welfare benefits, including medical, dental, vision, life insurance, and wellness programs
• Paid Time Off (PTO) to support work–life balance
• Paid parental leave for both maternity and paternity
• 401(k) retirement savings plan with a company match of up to 4%
• Employee stock ownership (ISO) opportunities
• A collaborative, creative, inclusive, and engaging team environment

RheoSense is an equal‑opportunity employer and is committed to maintaining a diverse and inclusive workplace.

The Senior R&D Test Engineer will provide technical leadership in:

• Scientific instrumentation and analytical measurement systems
• Product testing and performance characterization
• Verification and reliability engineering
• Failure analysis and technical investigations
• Experimental design and test method development
• Root-cause analysis and engineering troubleshooting
• Microfluidic systems and fluidics
• Optics, sensors, electronics, and precision electromechanical systems
• Product risk assessment and reliability evaluation
• Cross-functional product development support
• Data analysis and evidence-based engineering decision-making
• Mentoring and technical leadership of engineers and technicians
• Responsible use of AI-assisted engineering tools to improve productivity, technical analysis, and engineering effectiveness

This position is focused primarily on scientific instrumentation, experimental testing, reliability engineering, product performance evaluation, engineering investigations, and multidisciplinary engineering problem-solving.

• →Bachelor's degree in Chemical Engineering, Mechanical Engineering, Optical Engineering, Biomedical Engineering, Bioengineering, Physics, Materials Science, Life Sciences, or a related scientific or engineering discipline.
• →Ten (10) or more years of progressively responsible experience in product development, engineering, laboratory testing, scientific instrumentation, research, manufacturing, or related technical environments.
• →Experience designing and executing experimental studies, test plans, engineering evaluations, or product-testing activities.
• →Demonstrated ability to independently solve complex technical problems through structured investigation and root-cause analysis.
• →Experience collecting, analyzing, and interpreting technical or scientific data to support engineering decisions.
• →Hands-on experience working with laboratory equipment, measurement systems, instrumentation, or prototype testing environments.
• →Experience preparing technical reports, test protocols, engineering documentation, and experimental records.
• →Experience leading technical projects or cross-functional engineering initiatives.
• →Ability to work effectively in a cross-functional environment and collaborate with Engineering, Manufacturing, Quality, and Operations teams.
• →Strong written and verbal communication skills with the ability to clearly communicate technical concepts and findings.
• →Proficiency with Microsoft Office applications and common engineering, scientific, or data-analysis tools.

• Microfluidics and fluidic systems
• Plastics, polymers, and plastic-processing technologies
• Mechanical systems and precision mechanisms
• Optics and optical sensing
• Protein filtration, sample preparation, and characterization
• Rheology and viscosity measurement
• Electronics, sensors, and instrumentation
• Scientific instrumentation and analytical devices

Deep expertise in every area is not required. We value candidates who can learn quickly, think critically, connect concepts across disciplines, and apply engineering fundamentals to solve practical product-development and product-testing challenges.

We view responsible use of AI-assisted tools as an important component of modern engineering practice. Candidates should be comfortable leveraging AI technologies to improve productivity and effectiveness in activities such as:

• Developing test scenarios and edge-case analyses
• Reviewing requirements for completeness and traceability
• Organizing and analyzing test data
• Identifying trends and patterns in experimental results
• Drafting technical documentation and reports
• Supporting troubleshooting and root-cause investigations
• Evaluating potential design risks and testing gaps
• Accelerating engineering research and technical knowledge discovery

AI is expected to enhance engineering effectiveness but never replace scientific reasoning, engineering judgment, experimental rigor, or hands-on testing.

The successful candidate should demonstrate sound judgment regarding the appropriate use of AI tools and understand the importance of independently validating all technical conclusions, recommendations, and engineering decisions.