Electrical / Mechanical Engineer - Medical Device Development

Coalesenz Inc. • Full-time • Boston, MA, US • 4d ago

Coalesenz Inc. is an early-stage in vitro diagnostics company developing a novel optical sensing platform that rapidly measures blood coagulation status using only a small blood sample. Our technology addresses a critical unmet clinical need in helping clinicians identify and manage patients at elevated risk of life-threatening bleeding.

We are seeking a motivated and hands-on Electrical/ Mechanical Engineer to join our product development team. This role is ideal for an early-career engineer who enjoys building and testing hardware, solving practical engineering problems, and working across both mechanical and electrical systems in a fast-paced startup environment. You will work closely with the engineering team, our academic and clinical collaborators, and vendor partners to help prototype, test, and refine next-generation medical diagnostic devices.

Responsibilities

Design, fabrication, assembly, and testing of device prototypes and subsystems
Develop mechanical components, fixtures, enclosures, and assemblies using CAD and rapid prototyping tools
Build and troubleshoot electronic circuits, breadboards, PCB assemblies, and embedded systems
Support PCB layout, schematic review, component selection, and system integration activities
Troubleshoot electromechanical systems in a laboratory environment
Perform experimental testing, data collection, analysis, and iterative design optimization
Assist with development and execution of verification and validation test protocols
Work with sensors, optical systems, low-power electronics, and embedded hardware
Collaborate closely with software, firmware, and cross-functional engineering teams
Support design documentation, risk analysis (FMEA), and product development activities

Qualifications

Bachelor’s or Master's degree in Mechanical Engineering, Electrical Engineering, Mechatronics, or related field
1–3 years of relevant industry, internship, or hands-on engineering experience
Hands-on experience with mechanical design, fabrication, and prototyping
Experience building and troubleshooting electronic circuits and embedded hardware
Familiarity with PCB layouts, schematics, wiring diagrams, and functional testing
Ability to troubleshoot electromechanical systems in a lab setting
Experience performing experimental testing, data analysis, and iterative design optimization
Proficiency in Python or MATLAB is required
Strong practical problem-solving and troubleshooting skills
Strong communication and collaboration skills
Eagerness to learn and grow in a multidisciplinary startup environment

Preferred Qualifications

Experience with medical devices, biosensors, optical systems, or diagnostic instrumentation
Familiarity with embedded systems, microcontrollers, and firmware development
Experience with low-power electronics and power management systems
Internship, co-op, or startup experience

At Coalesenz, you’ll have the opportunity to work on impactful technology with real potential to improve patient outcomes and save lives while gaining broad hands-on experience across product development and engineering disciplines.

Coalesenz offers a competitive benefits package and is an Equal Opportunity Employer.