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Mechanical Engineer I or II

Job Description

We are seeking a skilled and highly motivated Mechanical Engineer to join our team. As a mechanical engineer at Rigorous, you will be responsible for assisting in the design, prototype, and development of mechanical components of automated robotic systems. Your expertise will be vital in ensuring the efficient and effective operation of mechanical systems, meeting project objectives, and contributing to overall engineering excellence. You’ll work primarily at the Rigorous facility with occasional travel required for testing, installations, and service. As our team grows, you’ll collaborate with systems engineers, robotics engineers, software engineers, and technicians.


  • Collaborate with the engineering team to develop and refine mechanical system designs that meet project specifications, performance & manufacturability requirements, and industry standards.

  • Design, analyze, develop, test, and integrate mechanical and electrical systems for autonomous robots.

  • Assist in the design and modification of engineering drawings, schematics, and technical drawings using computer-aided design (CAD) software.

  • Conduct FEA simulations, calculations, and tests to determine the functionality, performance, and reliability of mechanical components and systems.

  • Develop and maintain project documentation, including design records, reports, test procedures, and change control documentation.

  • Direct and coordinate manufacturing support, documentation, and testing activities to ensure compliance with specifications, and customer requirements.

  • Develop and maintain Rigorous design, production, testing, and maintenance systems.

  • Support clients, operators, and Rigorous technology in the field.

  • Write and maintain documentation and knowledge base materials.

Ideal Requirements

  • Degree in mechanical engineering, electrical engineering, math, physics, or a similar field. Technical degrees will also be considered.

  • A minimum of two years of experience as a Mechanical Engineer or equivalent in a related engineering role.

  • Experience working on large mechanical assemblies or functioning as an engineering lead for assembly teams & technicians is a plus.

  • Proficiency in OnShape Mechanical or similar CAD design software, including drafting, preparing drawings for production, FEA, and simulations.

  • Strong working knowledge of pneumatics and hydraulics.

  • Strong working knowledge of ASME drawing standards, GD&T and experience producing drawings for:

  • Machined Parts (milling and lathe operations)

  • Sheet Metal

  • Weldments (with & without high precision secondary machine operations)

  • Assemblies

  • Plant Layouts

  • Clear understanding of the Linux operating system, embedded systems, and embedded Linux is a plus.

  • Excellent problem-solving skills and the ability to think critically and analytically.

  • Effective communication and teamwork abilities, with strong technical writing skills.

  • Experience with simulation, modeling, and analytical software (e.g., SimScale, Python )

To apply, please send your resume and cover letter to as PDF documents. The candidate must be eligible to work in the United States. This position is based in Williston, VT and requires occasional travel. Rigorous ( is an equal opportunity employer. Rigorous offers a benefits package including health insurance and paid time off, as well as a collaborative work environment that fosters growth and development. If you possess the necessary skills and experience and thrive in a challenging and innovative environment, we encourage you to apply.

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