Mechanical Engineer III

Company: North Atlantic Industries
Location: Bohemia
Posted on: April 2, 2026

Job Description:

Full-time Description North Atlantic Industries is a leading provider of embedded electronic solutions, specializing in rugged embedded computing, power supplies and motion simulation and measurement technologies. Our products and services are used by the military, aerospace, and industrial markets, helping to advance technology and protect the free world. NAI was proud to be recognized as a Top Workplace on Long Island by Newsday! Our culture is very collaborative. We have team building events, company picnics, special event day and employee game room. Please visit our website at www.naii.com/careers to see more about what makes us a unique place to work. Summary: The Mechanical Engineer III develops advanced military-grade embedded systems and packaging, with a strong focus on thermal solution design and PCB thermal management for rugged electronics in aerospace and defense applications. They bring over 10 years of hands-on experience in electronics packaging and mechanical design for high-reliability environments. Requirements Leadership: Work closely with cross functional teams to develop new products. Reviews project progress with management to ensure that the product meets designs goals and timeline. Train and mentor one or more junior engineers, fostering their growth. Mechanical Design: Design packaging for electronic components like printed circuit boards, connectors, cables for use in rugged environments including laboratory, terrestrial and aerospace applications. Plan and collaborate with the electrical engineering team to create multiple variations of existing and new products. Ensuring the new design will survive in rugged environments. Provide mechanical packaging concept and feasibility study at proposal stage. Design thermal management solutions for electronic components. Create detailed drawings for fabrication purposes. Perform tolerance studies to ensure worst case conditions do not impede performance. Develop and validate custom thermal management solutions for printed circuit boards, including heat pipe integration, conduction/convection cooling, and thermal interface material selection. Perform PCB thermal analysis efforts to ensure high-reliability operation in extreme environments. Mechanical Analysis: Perform printed circuit board level and system level structural analysis and fatigue analysis. Perform printed circuit board level and system level thermal analysis for conduction and convection cooled products. Prototype and testing: Lead the mechanical engineering design process, from concept to prototype through testing and troubleshooting. Develop product test plans for both informal and formal design testing. Manufacturing Support: Experience in Design for Manufacturability and Assembly (DFM/DFMA) Strong drafting skills with experience/knowledge in assembly tooling, fixture design Support new design handoff to production environment. Qualifications and Education Requirements: Strong working knowledge of packaging electrical components like printed circuit boards, connectors, cables in rugged environments including ground and aerospace applications. A bachelor’s degree in mechanical engineering (BSME) required, with a strong understanding of electronics packaging concepts. 10 years of experience in an engineering and manufacturing environment. Proven experience in solving packaging challenges for printed board assembly designs in demanding ground and aerospace environments. Demonstrated CAD proficiency, particularly in Autodesk Inventor or Solidworks and ASMEY14.5-2018 and geometric dimensioning and tolerancing (GD&T) standards. Demonstrated knowledge of strength of materials, vibration, and fatigue. Ability to analyze and understand results and implement design changes to improve structural performance of electronic systems. This includes proficiency in FEA software, particularly ANSYS Mechanical, to perform modal, random vibration, shock, and other structural analyses. Demonstrated knowledge of heat transfer mechanisms and principles to analyze, understand results and implement design changes to improve thermal performance of electronic systems. This includes familiarity in Autodesk CFD software package or similar, to perform conduction and convection thermal analyses. Ability to multitask effectively in a work environment with shifting priorities. Excellent oral, written, and interpersonal skills. Candidates must be a U.S. Person, defined as either a U.S. citizen or a lawful permanent resident (Green Card holder), and must be able to provide appropriate documentation upon hire to verify this status. Please note that some positions involve sensitive customer contracts and require U.S. citizenship as a condition of employment. Preferred Skills and Abilities: Expertise in complex machined part design. Knowledge of sheet metal design and brazing. Familiarity with MIL-STD-810, VITA 62, VITA 48, and VITA 47 standards. Familiarity with Product Data Management (PDM) systems. Experience with heat pipe design, heat sinks, and other advanced thermal solution techniques for compact or high-power-density electronics. North Atlantic Industries offers comprehensive and competitive packages including: Benefits Medical, Dental, and Vision Insurance Company-provided Life and AD&D Insurance Voluntary Supplemental Life Insurance Long-term Disability Insurance Flexible Spending Accounts (FSA) Employee Assistance Program (EAP) 401(K) with company matching contributions Vacation, holidays, sick Employee tuition reimbursement Annual bonus eligibility Opportunities for learning and career development Work Schedule and Environment Monday to Friday, Day Shift Discretionary 9/80 Schedule Business casual dress code North Atlantic Industries (NAI) is proud to be an Equal Opportunity Employer and is committed to providing equal employment opportunity for all persons in all facets of employment. All qualified applicants will receive consideration for employment without regard to any legally protected status. If you are an individual with a disability or a disabled veteran and require a reasonable accommodation in applying for any posted position, please contact Human Resources at 631-567-1100 or by email at hr@naii.com. As a federal government contractor, in accordance with applicable laws, regulations, and Executive Orders, North Atlantic Industries (NAI) is required to develop annual Affirmative Action Plans for Protected Veterans and Individuals with Disabilities. Any employees or applicants who wish to review the Affirmative Action Plan for Protected Veterans and Individuals with Disabilities can contact us by sending an email to hr@naii.com or by calling 631-567-1100. Salary Description $95,000 - $125,000 per year

Keywords: North Atlantic Industries, Toms River , Mechanical Engineer III, Engineering , Bohemia, New Jersey