R&D Mechanical Engineer

R&D Mechanical Engineer

Primary Location


US-CA-Livermore

ID


2026-4578

Category


Mechanical Engineer

Position Type


Contract

Remote


No

Additional Location


US-FL-Boca Raton

Overview

Longenecker & Associates (L&A), a Geosyntec Company, is a trusted partner enabling critical missions across the U.S. Department of Energy (DOE) complex for more than 30 years. We contribute to DOE's nuclear security and environmental remediation enterprise by providing the highest-caliber staff and experts. We are seeking a motivated Research and Development Engineer to contribute to our mission supporting our work at Sandia National Labs in Livermore, California.

Geosyntec is an innovative, international engineering and consulting firm serving private and public-sector clients to address new ventures and complex problems involving our environment, natural resources, and civil infrastructure. Our engineers, scientists, technical and project employees serve our clients from offices across the world. Ranked by ENR as one of the top environmental engineering design firms, Geosyntec is internationally known for its technical leadership, broad experience, and exceptional client service.

We invest in our people. Each employee is unique, and your career at Geosyntec will be too. We offer competitive pay and benefits, and well-being programs to support you and your family.

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Essential Duties and Responsibilities

The Telemetry (TM) team at the National Laboratories in Livermore, CA is seeking an R&D Mechanical Engineer to join our dynamic team! We are responsible for the design, development, testing, and qualification of multiple telemetry products across the ND portfolio. As a Mechanical Engineer, you will contribute to the mechanical design, conduct full product environmental testing, and verify requirements in support of qualification and product delivery. Your role will also include fixture development, documentation, hardware assembly, and managing fabrication processes. Our telemetry units are highly integrated electro-mechanical designs that must operate effectively in severe environments. Success in this role requires the ability to collaborate with a multi-faceted engineering team.

Organization 8434, Telemetry Engineering II - along with sister departments 08432, 08433, 08435 and 08436- has responsibility for the design, development, and qualification of weapon system instrumentation (or telemetry systems) for use in Joint Test Assemblies (JTAs) for the entire US nuclear arsenal. The JTA program is a cornerstone of the Stockpile Evaluation Program and allows critical assessment of the weapon system, DoD platform, and support personnel performance. To fulfill its mission responsibilities, Organization 8434 employs a diverse and talented group of electrical engineers, mechanical engineers, and technologists. The Organization collaborates with other NW groups within the National Laboratories and across the Nuclear Weapons Complex, including NNSA, Lawrence Livermore National Laboratory, Los Alamos National Laboratory, the production agencies (National Security Center and Pantex), and the DoD. Organization 0843x is also expected to have significant interactions with other DOE Laboratories and other NNSA entities (beyond the NW Complex), the DoD, and other government agencies.

Collaborate with stakeholders to understand and document system needs and requirements for Telemetry hardware;
• Work with a cross-functional team to establish long-term visions and short-term priorities for the mechanical engineering team;
• Utilize critical thinking to troubleshoot both mechanical and electromechanical issues, providing solutions within programmatic constraints;
• Engage in hands-on work with the Telemetry product through fabrication and testing activities;
• Use CREO and PDMLink to design and model the Telemetry product;
• Perform and analyze fine element analysis (FEA) simulations for stress, strain, modal and thermal environments;
• Work with vendors and Sandia buyers to procure development parts;
• Work with MCAD and the product definition team to create and authorize product drawings; and
• The position requires an ability to travel up to 25% to support the mission.

Education and Licensure

• Bachelor's degree in mechanical engineering or other relevant Engineering field. (required)

Skills, Experience and Qualifications

• At least 5 years of experience or equivalent combination of education and experience. (required)
• Mechanical Testing (Shock, Vibration, Temperature, Pressure, Humidity) and data analysis.
• Strong design skills in CAD.
• GD&T knowledge.
• Experience designing for multiple manufacturing processes including machined aluminum, sheet metal and 3D printing (FDM).
• Due to federal contract security requirements, candidates must be able to successfully pass a federal background investigation to secure and maintain DOE Q security clearance. (required)
• Due to federal contract security requirements, this position requires U.S. Citizenship. (required)
• Health & Safety training, medical monitoring, and client-driven drug and background testing. (required)

Please note that marijuana remains a Schedule III controlled substance under Federal Law. Federal contractors must follow Federal drug-free workplace rules, which prohibit marijuana use, even if medical or recreational use is permitted under State Law.

PREFERRED QUALIFICATIONS & LOCATION DETAILS:

• Graduate level degree in Mechanical Engineering.
• Experience within the NNSA complex.
• GD&T ANSI Y14.5 experience.
• Experience with nuclear weapons and/or test assembly design principles.
• Demonstrated experience with designing, testing, or fabricating aerospace hardware.
• Demonstrated experience with testing in vibration, shock, thermal, vacuum, and centrifugre.
• CREO skills.
• Active DOE Q Clearance.
• Livermore, CA - Onsite Position.
• Contract Duration of 2-3 years.

This opportunity will be posted for at least five days. Below are the potential compensation ranges that we in good faith believe are applicable for this role at the time of this posting and are only applicable for jobs to be performed in the specified location(s) below. The typical base salary range for this position is just one component of Geosyntec's total compensation package for employees. Actual compensation will be determined based on education, experience, skill set and location.

• Minimum Salary: $115,000/year / Maximum Salary: $130,00 /year (CA)

We offer a comprehensive benefits package including, paid holidays, vacation, sick, and personal paid time off, medical, dental, vision, life, and disability insurance, 401(k), and other benefits to eligible employees.