System Design Engineer

Simbex, LLC; Lebanon (NH); On-site; USD 90,000 - 120,000; Full time

Job summary

Simbex, LLC in Lebanon, NH designs complex electromechanical devices and wearable IoT systems. The System Design Engineer will lead mechanical design, system integration, data collection, and manufacturing-support activities across cross-disciplinary teams. You’ll apply human-centered design, drive DFx, and help optimize for high-volume production.

Ideal candidates have SolidWorks proficiency, GD&T expertise, hands-on prototyping, and experience validating performance in lab and field tests.

Qualifications

• BS in Mechanical Engineering or closely related field.
• SolidWorks for 3D modeling and engineering drawings.
• Knowledge of GD&T and tolerance stack-up analysis.
• Hands-on prototyping with 3D printing and machining.
• Experience with analog and digital signal acquisition and measurement.

Responsibilities

• Mechanical Design & Development: design and develop mechanical components and assemblies for wearables IoT devices and more using SolidWorks; design-for-manufacture with attention to size, weight, and performance constraints; create and maintain drawings and BOM updates.
• System Integration & Testing: support integration of mechanical, electrical, and firmware subsystems; develop and execute verification and validation test plans; collect and analyze test data against specs; troubleshoot issues during bring-up and field testing.
• Data Collection: design and execute structured data collection protocols in lab and field environments; set up data acquisition systems to capture outputs across test conditions; analyze datasets to assess system performance.
• Manufacturing Process Support: monitor manufacturing activities for electromechanical sensor systems; troubleshoot production issues; maintain fixtures and test equipment; analyze production data to identify trends and root causes; travel ~5% domestically.
• Documentation & Process: maintain project documentation per Quality Management System; prepare engineering analyses; lead design reviews for production releases.

Education

Bachelor's degree in Mechanical Engineering

Tools

SolidWorks

3D printing

Manual machining

Job description

The System Design Engineer designs and engineers complex electromechanical devices. This role requires a passion for technology product development, particularly in consumer electronics, and experience collaborating with cross-disciplinary engineering teams. The ideal candidate understands human-centered design and brings strong technical problem-solving, communication, leadership, and interpersonal skills. This role also supports the manufacturing processes for our established line of electromechanical sensor systems (producing ~100,000 units annually). They should also be high-energy, self-motivated, proactive, and comfortable working in a fast-paced, evolving environment.

Responsibilities:

Mechanical Design & Development

• Design and develop mechanical components and assemblies for including wearable IoT devices, manufacturing equipment, and more using SolidWorks
• Support hardware design from concept and prototyping through design-for-manufacture, with an eye toward size, weight, and performance constraints
• Isolate and iterate on component/feature designs with a constant eye toward system integration
• Conduct analyses including mechanical (e.g. stress and tolerance stack-up) and design risks (e.g. failure modes),
• Work with rapid prototyping (3D printing, CNC) and manual fabrication to iterate on designs quickly
• Create and maintain engineering drawings, and BOM updates

System Integration & Testing

• Support integration of mechanical, electrical, and firmware subsystems into cohesive products
• Assist in developing and executing verification and validation test plans and procedures
• Collect, analyze, and document test data against functional and performance specifications
• Identify and troubleshoot mechanical and system-level issues during bring-up and field testing
• Develop and execute verification and validation test plans covering functional, environmental, and durability requirements

Data Collection

• Design and execute structured data collection protocols in lab and field environments
• Set up and operate data acquisition systems (DAQ, oscilloscope, serial logging) to capture outputs across test conditions
• Analyze and interpret collected datasets to assess system performance, identify anomalies, and support design decisions

Manufacturing Process Support

• Monitor manufacturing activities for electromechanical sensor systems, providing engineering support to troubleshoot and resolve production issues promptly.
• Maintain and troubleshoot electromechanical manufacturing fixtures and test equipment, utilizing both hands-on and remote methods.
• Analyze production data to identify trends, lead root cause analysis (RCA) efforts for failures, and proactively support manufacturing sites to maximize up-time.
• Interface with internal teams and external suppliers to address manufacturing-related concerns that arise.
• Perform annual and as-needed service visits for equipment installation and maintenance. Requires ~5% travel, both domestic and Mexico.
  

Documentation & Process

• Maintain complete and current project documentation in accordance with Simbex's Quality Management System
• Prepare engineering analyses and present findings to cross-functional teams
• Lead and support design reviews for production releases

Required Qualifications:

• BS in Mechanical Engineering, Systems Engineering, or closely related field
• Proficiency in SolidWorks for 3D modeling, assemblies, and engineering drawings
• Understanding of GD&T, tolerance stack-up analysis and design-for-manufacture principles
• Hands-on prototyping experience: 3D printing, manual machining, and other fabrication methods
• Analog and digital signal acquisition and measurement experience