Mechanical Engineer III

Resonetics; Nashua (NH); On-site; USD 65,000 - 102,000; Full time

Job summary

Resonetics in Nashua, NH is seeking a Mechanical Design Engineer to lead projects for precision equipment and laser micromachining systems. You will design mechanical platforms, assemblies, and tooling with SolidWorks, ensure manufacturability, and collaborate with electrical, software, and manufacturing teams.

The role requires 5+ years of experience in precision mechanical design, strong GD&T and tolerance analysis skills, and a track record of delivering high-quality, repeatable results.

Qualifications

• B.S. in Mechanical Engineering or related field.
• 5+ years experience in mechanical design for precision equipment, automation, or capital machinery.
• Proficiency with SolidWorks or 3D modeling.
• Excellent problem-solving and communication skills.
• Ability to work independently and in a team.
• Ability to create precise mechanical drawings and documentation.
• Proficiency in geometric dimensioning and tolerancing.

Responsibilities

• Create detailed Mechanical designs, assemblies, and drawings using SolidWorks.
• Perform tolerance analysis, material selection, and manufacturability assessments.
• Architect mechanical platforms for laser micromachining (stages, gantries, mounts, enclosures, thermal management).
• Select and integrate lasers, optics, scanners, beam delivery, machine vision, and motion components.
• Design for precision, stability, and repeatability (micron-level tolerances; vibration and thermal drift).
• Coordinate with electrical, software, and manufacturing teams for integration.
• Identify opportunities for cost reduction, reliability improvement, and design optimization.
• Prepare technical documentation, BOMs, and ensure ISO/ASME/NFPA compliance.
• Collaborate with controls engineers on motion profiles, PLC/HMI integration, and safety interlocks.
• Interface with suppliers and manufacturing on cost, lead-time, and quality.
• Design for manufacturability and serviceability; oversee prototype builds.
• Project manage design projects and mentor junior engineers.

Skills

Mechanical design

SolidWorks

GD&T

Tolerance analysis

Team collaboration

Education

B.S. in Mechanical Engineering

Tools

SolidWorks

3D CAD

MS Office

Job description

Overview

Resonetics is a global leader in advanced engineering, prototyping, product development, and micro manufacturing, driving innovation in the medical device industry. With rapid expansion across all our locations, we continue to push the boundaries of technology while fostering a dynamic, employee-centered culture. Our commitment to excellence and continuous improvement makes Resonetics an exciting place for professionals passionate about shaping the future of micro-manufacturing and being part of something bigger.

This individual will be a member of our system engineering design team which designs laser micromachining systems and other process manufacturing systems for various industries including medical, electronics, and semiconductor industries.This position involves designing opto-mechanics, motion systems, electro-mechanical packaging, parts handling and automation, tooling, etc. This individual will be responsible for leading mechanical design projects, solving technical challenges and ensuring quality from concept to implementation.

Join Resonetics and be part of a team that’s redefining medical device manufacturing. If you’re passionate about innovation and thrive in a fast-paced environment, we’d love to hear from you.

Responsibilities

• Create detailed Mechanical designs, assemblies, and drawings using Solidworks.
• Perform tolerance analysis, material selection, and manufacturability assessments.
• Architect mechanical platforms for laser micromachining (stages, gantries, opto-mechanical mounts, enclosures, thermal management).
• Select and integrate lasers, optics, scanners, beam delivery, machine vision, and motion components.
• Design for precision, stability, and repeatability (micron-level tolerances; vibration, thermal drift, alignment).
• Coordinate with electrical, software, and manufacturing teams to ensure seamless integration.
• Identify opportunities for cost reduction, reliability improvement, and design optimization.
• Prepare technical documentation, BOMs, and ensure compliance with relevant standards (ISO, ASME, NFPA).
• Collaborate with controls engineers on motion profiles, PLC/HMI integration, and safety interlocks.
• Interface with suppliers and manufacturing on cost, lead-time, and quality.
• Design for manufacturability (DFM/DFA) and serviceability; oversee prototype builds.
• Project Manage design projects – delegate design tasks and mentor junior engineers.

Required Qualifications

• B.S. in Mechanical Engineering or related field.

• 5+ years experience in mechanical design for precision equipment, automation, or capital machinery.

• Proficiency with SolidWorks or 3D modeling.

• Excellent problem-solving, analytical, & verbal and written communication skills.

• Ability to work both independently and collaboratively within a team environment.

• Ability to create and maintain precise mechanical drawings and documentation for the manufacturing of complex components and assemblies.

• Proficiency of Geometric Dimensioning and tolerancing.

• Excellent computer skills, proficient in Excel, Word, PowerPoint.

• Independent, self-starter with the ability to multi-task.

• Possess excellent communication skills and positive attitude.

Preferred Qualifications

• Experience with laser micromachining (femtosecond/picosecond/nanosecond) and beam delivery systems.

• Laser, optics, opto-mechanics, complex and high precision system and automation work highly desirable.

• Experience with 3D printing and rapid prototyping (FDM & SLS).

• Experience with medical device manufacturing would also be a plus.

• Hands-on experience is highly desirable.

Compensation

The compensation for this role is competitive and will be based on experience and qualifications. The anticipated range is $65,000-$102,000.

Our company policy is that we are unable to provide visa sponsorship. Candidates must already be legally authorized to work in the United States without the need for sponsorship now or in the future.