Senior Engineer I/II, Mechanical

Description MaxCyte is seeking a Senior Mechanical Engineer I/II to develop innovative single-use fluid control assemblies and supporting instrumentation for next-generation life sciences technologies. In this role, you will define and lead the mechanical design strategy for single-use consumables and associated instrumentation ensuring robust closed-system performance aligned with GMP manufacturing requirements. You will own the mechanical development across the full product lifecyclefrom early concept and feasibility through detailed design, verification and validation, commercialization, and sustaining engineeringwhile collaborating closely with other engineers and cross-functional teams to integrate seamlessly with other subsystems. Together, you will deliver solutions that meet the highest standards for performance, reliability, and manufacturability. Job Responsibilities: • Mechanical Design & Development: Lead mechanical design and development of integrated hardware and consumable subsystems for GMP manufacturing. Create CAD models & detailed drawings, specifications, BOMs, and ECOs. Perform tolerance analyses and FEA. Drive prototype builds, engineering testing, and failure/root-cause analysis. Evaluate and optimize designs for manufacturability with cost consideration. • Bioprocessing Systems: Design and develop bioprocess consumables and systems that support closed, sterile, single-use processing in GMP manufacturing environments, including fluid circuits, interfaces, and integrated fluid and thermal control components such as pumps, valves, heaters, and sensors. Apply biocompatible material selection and mechanical design principles to ensure reliable performance while meeting biological process requirements. Support system-level testing for functionality, performance, and robustness. • Verification & Validation: Develop an