Test & Development Engineer

About RheoSense, Inc.

RheoSense, Inc. (RheoSense) is a leading scientific instrumentation company specializing in high‑precision microfluidic viscosity measurement technology. Our innovative VROC® platform is trusted by researchers, engineers, and scientists across biotechnology, pharmaceuticals, materials science, and advanced manufacturing.

We are committed to delivering accurate, reliable, and user‑friendly measurement solutions that empower our customers to accelerate discovery, improve product performance, and drive scientific advancement.

At RheoSense, we foster a collaborative, fast‑moving environment where innovation, continuous improvement, and customer focus guide everything we do. As we continue to grow, we’re looking for talented individuals who are excited to contribute to cutting‑edge technology and make a meaningful impact in the scientific community.

Position:  Test & Development Engineer
Corporate Office:  San Ramon, California 
Relocation Assistance:  Relocation assistance is not available for this position. While qualified candidates from all locations are welcome to apply, preference may be given to candidates residing within a reasonable commuting distance or those who can relocate independently.
Closing:  Continuous Recruitment. We are accepting and reviewing all qualified applicants who meet the minimum requirements which are listed in this announcement for consideration on an ongoing basis.
Application Screening Process:  To ensure full consideration, applicants must meet the minimum qualifications for the position and complete all required application materials, including a current resume, detailed cover letter, pre-screen questionnaire, and video assessment. Incomplete applications may not be considered during the selection process.
Salary: The anticipated annual base salary range for this position is $100,000 to $130,000. The successful candidate's starting salary will be determined based on relevant skills, experience, qualifications, and other job-related factors. It is not typical for new hires to be placed at or near the top of the salary range. This position may also be eligible for discretionary performance-based incentive compensation, subject to individual and company performance.

RheoSense offers a competitive benefits package and opportunities for professional growth and development.

Who You Are
You are a curious, hands-on engineer who enjoys solving complex technical challenges through a combination of testing, analysis, and innovation. You thrive in collaborative environments, take ownership of your work, and use data-driven decision-making to improve products, processes, and customer outcomes. You are equally comfortable executing detailed validation activities, troubleshooting technical issues, and contributing to product development efforts. Most importantly, you are motivated by continuous learning and excited by the opportunity to work with advanced scientific instrumentation and measurement technologies.

Job Responsibilities and Expectations
This is not necessarily an all-inclusive list of job-related responsibilities, duties, skills, efforts, requirements, or working conditions. While this is intended to be an accurate reflection of the current job, management reserves the right to revise the job or to require that other or different tasks be performed as assigned.

• Develop, execute, and maintain test plans, protocols, and validation procedures for RheoSense products and technologies.
• Collect, analyze, and interpret test and engineering data to support product development, design decisions, and continuous improvement efforts.
• Perform troubleshooting, root-cause analysis, and engineering investigations related to product performance, reliability, manufacturing, and customer-reported issues.
• Support product verification, validation, qualification, and new product development activities throughout the product lifecycle.
• Design and improve test methods, fixtures, experimental setups, and engineering evaluation tools.
• Collaborate with Hardware, Software, Mechanical Engineering, Manufacturing, Quality, and Application Science teams to evaluate product performance and implement improvements.
• Support system integration, prototype evaluation, product enhancements, and engineering development projects.
• Prepare and maintain technical reports, test documentation, work instructions, specifications, and engineering records.
• Identify and implement improvements to products, testing methodologies, engineering processes, and operational efficiency.
• Participate in design reviews and provide technical recommendations based on engineering analysis and test results.
• Perform other duties and special projects as assigned.

Minimum Qualifications

• Bachelor's degree in Mechanical Engineering, Electrical Engineering, Biomedical Engineering, Physics, Engineering Technology, or a related technical discipline.
• 3+ years of experience in engineering, product development, testing, validation, manufacturing, laboratory, or related technical environments.
• Experience developing and executing test plans, validation protocols, engineering evaluations, or experimental procedures.
• Strong analytical and problem-solving skills with the ability to troubleshoot complex technical issues, identify root causes, and develop practical solutions.
• Experience collecting, analyzing, and interpreting technical data to support engineering and business decisions.
• Familiarity with laboratory equipment, measurement tools, instrumentation, and data acquisition systems.
• Experience preparing technical reports, test documentation, engineering documentation, and work instructions.
• Ability to work effectively in a cross-functional environment, collaborating with Engineering, Manufacturing, Quality, and Operations teams.
• Strong written and verbal communication skills with the ability to clearly communicate technical information.
• Proficiency with Microsoft Office applications and common engineering or data analysis tools.

Preferred Qualifications

• Experience supporting product development, product verification, validation, or new product introduction (NPI) activities.
• Experience with scientific instruments, laboratory equipment, sensors, fluidic systems, medical devices, or other precision electromechanical products.
• Experience with Design of Experiments (DOE), statistical analysis, and structured engineering investigations.
• Familiarity with Python, MATLAB, LabVIEW, or similar automation and data analysis tools.
• Experience with root-cause analysis, corrective and preventive actions (CAPA), and continuous improvement methodologies.
• CAD experience using SolidWorks or similar design software.
• Working knowledge of Lean Manufacturing, Six Sigma, or other structured problem-solving methodologies.

 Physical Requirements
These physical requirements are not exhaustive, and additional job-related physical requirements may be added to these on an as-needed basis.

• This position is based onsite and requires regular presence in office, laboratory, and manufacturing environments.
• Ability to sit, stand, walk, and move throughout the facility during the course of the workday.
• Ability to use computers, testing equipment, instrumentation, and standard office equipment.
• Ability to handle and manipulate small mechanical and electronic components, test fixtures, and laboratory equipment.
• Ability to perform hands-on testing, troubleshooting, assembly, and evaluation activities requiring manual dexterity and visual attention to detail.
• Ability to occasionally lift, carry, and move materials, equipment, and test apparatus weighing up to 25 pounds.
• Ability to communicate effectively with colleagues, vendors, and other stakeholders regarding technical and operational matters.
• Ability to safely work in laboratory and manufacturing environments while adhering to established safety procedures and protocols.

What We Offer

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.