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Sr. Mechanical Design Engineer

Rapiscan Systems, Inc.
United States, Massachusetts, Billerica
829 Middlesex Turnpike (Show on map)
Aug 01, 2025
Overview

Rapiscan, an OSI Systems Company is seeking a Sr Mechanical Design Engineer, based out of Billerica, MA.

Rapiscan Systems, an OSI Systems, Inc. company, designs, manufactures and markets security and inspection systems worldwide. Our products are used to inspect baggage, cargo, people, vehicles and other objects for weapons, explosives, drugs and other contraband. Rapiscan Systems security and inspection devices can be found in a wide range of locations such as airports, border crossings, railway stations, seaports and terminals, government and military installations, and nuclear facilities.

Senior Mechanical Design Engineer: Designs and analyzes mechanical systems, equipment and packaging. Conducts feasibility studies and testing new and modified designs. Directs support personnel in the preparation of detailed design, design testing and prototype fabrication. Provides design information to drafting for packaging documentation.


Responsibilities

  • Execute complex designs in the following disciplines: sheet metal, structural welded assemblies, plastic injection molding, vacuum forming, 3D printing, and machining.
  • Provide design concepts with analytical justification as required and perform detailed mechanical design in support of larger system design efforts with responsibilities extending to project integration.
  • Apply theoretical calculation to design in areas such as structural analysis, thermodynamics and fluid flow, or by testing mathematical models to validate the capabilities and parameters of the design and prove the prototype will do as design indicates.
  • Provide guidance to junior members of engineering and drafting/CAD staff.
  • Support the development of estimates for engineering hours with senior staff and management.
  • Adhere to company and quality procedures and requirements.
  • Has a solid working knowledge of machine shop and drafting practices.
  • Act as lead engineer on designs as part of a larger project.
  • Develop documentation necessary for preliminary and critical design reviews and support designs through the release to manufacturing.
  • Create design and documentation information for production documentation package.
  • Collaborate with peers in cross-functional areas such as electrical engineering, manufacturing engineering, quality assurance, and supply chain managers.
  • Identify and initiate process improvements.
  • Actively appraise technology and product concepts to keep product lines competitive and moving toward excellence by attending seminars, reading related articles and talking to vendors.
  • Provide project technical status to lead engineers, functional and program management.
  • Possess proficiency in computer design tools, specifically SolidWorks 3D solid modeling CAD.
  • Possess proficiency with FEA simulations and the ability to validate results using engineering calculations and extensive experience.
  • Uphold the company's core values of Integrity, Innovation, Accountability, and Teamwork
  • Demonstrate behavior consistent with the company's Code of Ethics and Conduct
  • It is the responsibility of every employee to report to their manager or a member of senior management any quality problems or defects in order for corrective action to be implemented and to avoid recurrence of the problem
  • Duties may be modified or assigned at any time to meet the needs of the business.

Qualifications

  • Bachelor's Degree in Mechanical Engineering
  • 8-10 years' minimum relevant mechanical design/test experience required
  • Experience working in a cross-functional environment
  • Proficiency with SolidWorks 3D solid modeling CAD tools
  • Proficiency with FEA simulations and the ability to validate results using engineering calculations and extensive experience.
  • Experience with Bills-of-Materials and associated workflows (ECO's).
  • Solid working knowledge of machine shop and drafting practices.
  • Full working knowledge of geometric dimensioning and tolerancing practices.
  • Experience working with Design-for-Manufacturing and Design-for-Cost.
  • Strong communication skills, including excellent writing and presentation skills.
  • Excellent written and oral communication skills.
  • Demonstrated ability to independently accomplish assigned tasks and work with others.

This position includes an education verification as part of our background check.

Please review our benefits here: Life at OSI

The specific programs and options available to any given employee may vary depending

on eligibility factors such as geographic location and date of hire. Please note that the salary information shown above is a general guideline only. Salaries are based upon candidate experience and qualifications, as well as market and business considerations.

NOTICE TO THIRD PARTY AGENCIES

OSI Systems, Inc. and its subsidiaries (collectively "OSI") does not accept unsolicited resumes from recruiters or employment agencies. If any person or entity, including a recruiter or agency, submits any information, including any resume or information regarding any potential candidate, without a signed agreement in place with OSI, OSI explicitly reserves the right to use such information, and pursue and/or hire such candidates, without any financial obligation to the person, recruiter or agency. Any unsolicited information or resumes, including those submitted directly to hiring managers, are considered and deemed to be the property of OSI.

Equal Opportunity Employer - Disability and Veteran Know Your Rights

Poster Link:

https://www.eeoc.gov/sites/default/files/2023-06/22- 088_EEOC_KnowYourRights6.12ScreenRdr.pdf

OSI Systems, Inc. has three operating divisions: (a) Security, providing security and

inspection systems, turnkey security screening solutions and related services; (b) Healthcare, providing patient monitoring, diagnostic cardiology and anesthesia systems; and (c) Optoelectronics and Manufacturing, providing specialized electronic components and electronic manufacturing services for original equipment manufacturers with applications in the defense, aerospace, medical and industrial markets, among others.

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