Senior Mechanical Design Engineer — Microfluidics Systems

RheoSense Inc.; San Ramon (CA); On-site; USD 120,000 - 150,000; Full time

Job summary

RheoSense, Inc. is seeking a Sr. Mechanical Design Engineer to join our San Ramon team.

You will lead mechanical design efforts for advanced instruments, translating concepts into detailed assemblies, drawings, and prototypes. Your hands‑on SolidWorks skills will drive DFMs across microfluidics and related systems, collaborating with cross‑functional teams from concept through production. You will contribute to DOE test fixtures, design reviews, and reliability testing while delivering quality

Qualifications

• Bachelor's degree in Mechanical Engineering or a closely related field.
• 5+ years of professional mechanical engineering experience.
• Recent hands‑on experience using SOLIDWORKS for mechanical design, assemblies, and engineering documentation.
• Ability to read, analyze, and interpret technical drawings, specifications, and engineering documentation.
• Strong analytical, troubleshooting, and problem‑solving skills.
• Excellent written and verbal communication skills.
• Demonstrated ability to work effectively in cross‑functional teams.
• Ability to thrive in a fast‑paced, high‑growth environment.

Responsibilities

• Design all advanced instrument parts and assemblies using SOLIDWORKS to meet specifications and for Design for Manufacturability (DFM) on integrated microfluidics, pneumatic, and liquid handling systems.
• Create test fixtures for Design of Experiments (DOE) as well as Verification, and Validation processes.
• Perform experimental testing and analyze resulting data.
• Lead project teams in the preparation of engineering inputs, cost estimates, schedules, and project management.
• Prepare for, and participate in, comprehensive design reviews.
• Evaluate performance at the component and system levels via both SOLIDWORKS modeling and hands‑on experimental methods.
• Develop and execute component reliability and qualification tests.
• Develop quality procedures to support the manufacturing team in pilot builds and troubleshooting during production.
• Write engineering change orders on existing products to improve designs and correct problems.
• Meet deadlines, sustain superior personal task management, and deliver consistent high performance.
• Perform other department‑specific duties as assigned.

Skills

Cross-functional teamwork

Strong communication

Problem solving

Fast learner

Execution focus

Education

Bachelor's degree in Mechanical Engineering

Tools

SOLIDWORKS

Job description

RheoSense, Inc. is seeking a Sr. Mechanical Design Engineer to join our San Ramon team.

You will lead mechanical design efforts for advanced instruments, translating concepts into detailed assemblies, drawings, and prototypes. Your hands‑on SolidWorks skills will drive DFMs across microfluidics and related systems, collaborating with cross‑functional teams from concept through production. You will contribute to DOE test fixtures, design reviews, and reliability testing while delivering quality