Jobs in the United States

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Added 4 mins ago
Systems Engineer (Mission and Requirements)
Arcfield
Chantilly, VA
Arcfield is seeking an experienced Mission / Systems Engineer to support the development and integration of advanced space-based sensing and mission capabilities supporting US Space Force…
Added 4 mins ago
Systems Engineer (Architecture & Solutioning)
Arcfield
Chantilly, VA
Arcfield is seeking a Systems Engineer to support the development and integration of advanced space-based sensing and mission capabilities supporting US Space Force and national security.…
Added 4 mins ago
Model Based-Systems Engineer
Arcfield
Dahlgren, VA
Are you ready to take your career to the next level? Join our team and help advance state-of-the-art systems design capabilities that are critical to national defense and multi-domain…
Added 7 mins ago
Materials and Processes Test Engineer (Associate or Experienced)
The Boeing Company
Huntsville, AL
Boeing is seeking a Materials and Processes Test Engineer to join our team in Huntsville, AL.
Added 7 mins ago
Mission Operations Engineer (Entry-Level) - Millennium Space Systems
Millennium Space Systems
Chantilly, VA
This position’s internal job code is Systems Engineer. Our team is currently hiring for a Level 1-2.
Added 28 mins ago
Software Engineer II - DevOps / Infrastructure (Onsite)
RTX
United States
…the world, and even beyond? At Collins Aerospace, our Mission Systems team helps civilian, military and government customers complete their most complex missions - whatever and wherever…
Added 32 mins ago
T
Systems Engineer
TEKsystems
El Segundo, CA
- $70 to $120 USD / hour
Must have a Top Secret Clearance.DescriptionThe Systems Engineer - Strategic SATCOM (Space Segment) role supports the engineering and integration of Department of Defense space systems,…
Added 41 mins ago
Power Electronics Engineer - High Voltage (Starlink)
SpaceX
Redmond, WA
…revolutionizing RF vacuum electronics to power the future of space communications with SpaceX gateways by building hardware an order of magnitude faster than traditional industry and an…
Added 44 mins ago
I
DevOps Engineer
Inspire11
Chicago, IL · 1 N Dearborn St. Chicago, IL
- Up to $10,000 USD / month
Contribute to the development and enhancement of new and existing applications, systems and components
Added 49 mins ago
ID&C Enterprise Project Engineer
BNH
Arnold AFB, TN
As the ID&C Enterprise Project Engineer, you will serve as the strategic bridge between engineering execution and project management. In this vital advisory role, you will partner directly…
Added 51 mins ago
Systems Test Engineer (EMI) - 20647
CORP-Corporate Office
United States
Northrop Grumman Defense Systems is seeking a Electromagnetic Interference (EMI) Systems Test Engineer to join the Sentinel program in enhancing the US Space Force’s ICBM capabilities and…
Added 51 mins ago
Sentinel - Nuclear Hardness Survivability Engineer - 20483*
CORP-Corporate Office
United States
Northrop Grumman Defense has an opening for a Nuclear Hardness Survivability Systems Engineer (Level 2/3) to join its Guidance Computer team in Roy, UT in support of the Sentinel Program.…
Added 51 mins ago
Electrical Engineer - Level 2
SP - Synoptics
United States
Northrop Grumman’s Space Sector is seeking a Electrical Engineer – Level 2 to join our team in Charlotte, NC. This position is 100% onsite and cannot accommodate telecommute work.
Added 51 mins ago
Senior Principal Systems Engineer *
CORP-Corporate Office
United States
Northrop Grumman’s Space Systems Sector is seeking a Systems Engineer – Level 4 to join our team in our Fairfax, VA or Morrisville, NC locations.
Added 51 mins ago
Sentinel - Systems Engineer / Principal Systems Engineer - 20060
CORP-Corporate Office
United States
Northrop Grumman Defense has an opening for a Systems Engineer (level 2)/Principal Systems Engineer (level 3) to support a Futures Program within the Command Systems Business Unit (BU)…
Added 54 mins ago
Materials and Processes Test Engineer (Associate or Experienced)
The Boeing Company
Huntsville, AL
Boeing is seeking a Materials and Processes Test Engineer to join our team in Huntsville, AL.
Added 54 mins ago
Mission Operations Engineer (Entry-Level) - Millennium Space Systems
Millennium Space Systems
Chantilly, VA
This position’s internal job code is Systems Engineer. Our team is currently hiring for a Level 1-2.
Added 56 mins ago
Facilities Engineering Supervisor
NIIC National Interstate Insurance Company
Richfield, OH
Leads daily engineering operations across assigned facilities, ensuring mechanical systems, energy infrastructure, and communications networks function efficiently and reliably.
Added 59 mins ago
Hardware Engineer
BAE Systems
Nashua, NH
Job Description BAE Systems is seeking a senior technical engineer to assist in leading advanced program pursuits in a Hardware Engineering role. In this exciting role you will be assisting…
Added 1 hour ago
Senior Engineer - LSC
SOUTHERN STAR COURT MANAGEMENT CORP
Austin, TX
Help assist Director of Engineering to over see Level 1,2 and 3 Engineer Techs. Performing advanced maintenance to keep all aspects of the Hotel at fully functionality and provide the best…
Added 1 hour ago
IC
Pre-si Power and Performance System Validation Engineer
Intel Corporation
TX · CA · OR
- $52,000 to $200,000 USD / year
Expertise in system-level power management of real-time processors and systems.
Added 1 hour ago
Cloud Systems Administrator
Peraton
Annapolis Junction, MD
…traditional and nontraditional threats across all domains: land, sea, space, air, and cyberspace. The company serves as a valued partner to essential government agencies and supports every…
Added 1 hour ago
Staff Product Manager, IAAS Platform
Nscale
NY
…0–2+ operational software that runs our global GPU fleet - the systems that bring capacity online, keep it healthy, and restore it fast when things go wrong. You partner daily with Fleet…
Added 1 hour ago
Propulsion Engineer II
Blue Origin Personnel, LLC
United States
At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We’re working to develop reusable, safe, and low-cost space vehicles and systems within…
Added 1 hour ago
Vehicle operation engineer II –New Glenn 9X4 Mechanical Sub System
Blue Origin Personnel, LLC
Space Coast, FL
At Blue Origin, we envision millions of people living and working in space for the benefit of Earth. We’re working to develop reusable, safe, and low-cost space vehicles and systems within…

LLNL

Mechanical Test Engineer

Livermore, CA, United States

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Job details

Posting language: English
Posted: Nov 4, 2026

Original job description

Company Description Join us and make YOUR mark on the World! Lawrence Livermore National Laboratory (LLNL) has turned bold ideas into world-changing impact advancing science and technology to strengthen U.S. security and promote global stability. Our mission spans four critical national security areas nuclear deterrence, threat preparedness, energy security, and multi-domain defense empowering teams to take on the toughest challenges of today and tomorrow. With a culture built on innovation and operational excellence, LLNL is a place where your expertise can make a real impact.

Job Description

Defense Technologies Engineering Division (DTED) has multiple openings for Mechanical Test Engineers to support the Environmental & Mechanical Test Group. Under supervision, you will conduct experimental testing on a variety of projects related to environmental testing, modal analysis, health monitoring, aging studies, data acquisition, load testing, general instrumentation and measurement diagnostics. Work supports multiple program areas, including Strategic Deterrence, Global Security, and the National Ignition Facility. This position will report to a DTED Environmental & Mechanical Test Group Leader. Depending on your assignment, this position may offer a hybrid schedule, blending in-person and virtual presence. You may have the flexibility to work from home one or more days per week. This position will be filled at either level based on knowledge and related experience as assessed by the hiring team. Additional job responsibilities (outlined below) will be assigned if hired at the higher level. You will

Design and conduct tests on mechanical and\or diagnostic systems, analyze results, and author reports.
Conduct experimental modal analyses and analyze results in concert with modeling and simulation.
Operate test equipment (shaker systems, shock machines, thermal chambers, etc.) using fundamental knowledge of best test and measurement practices.
Prepare supporting safety and engineering documentation and participate in formal engineering design reviews.
Perform supporting engineering calculations for structural, thermal, and diagnostic systems.
Participate in the detailed design process, component part fabrication and unit assembly.
Provide solutions to problems of limited complexity that require the evaluation of readily identifiable factors using standard techniques and methodologies.
Work as a member of a project team in a dynamic environment.
Interface with peers both internal and external to the organization to plan and execute testing.
Perform other duties as assigned.

Additional job responsibilities, at the SES.2 level

Independently define engineering requirements for structural, thermal, fluidic, and diagnostic systems within assigned project scope.
Generate detailed plans, schedules, and budgets for project activities.
Perform independent technical tasks and projects and support research efforts and select methods, techniques, and evaluation criteria for obtaining results based on analysis of multiple, largely identifiable factors.

Qualifications

Ability to obtain and maintain a U.S. DOE Q-level security clearance which requires U.S. Citizenship.
Bachelor’s degree in Mechanical Engineering or equivalent Combination of education and experience.
Fundamental knowledge of testing practices and data processing.
Fundamental knowledge and/or experience in one or more of the following areas: vibration and shock measurements, experimental modal and dynamic analysis, general instrumentation (i.e. accelerometers, strain gages, thermo-couples, resistance thermal detectors (RTD’s), capacitance gages, laser vibrometers, pressure sensors, etc.), general data acquisition theory (Nyquist criterion, anti-aliasing, etc.).
Experience using MatLab or other computer programming codes for data manipulation and analysis.
Fundamental knowledge of engineering hardware design and fabrication.
Effective communication skills with proven ability to present technical concepts and ideas in a clear and coherent manner, both verbal and written for presentation and collaboration with other technical staff members.

Additional qualifications at the SES.2 level

Comprehensive knowledge of measurement sensors and an understanding of when to use specific sensors for certain applications
Ability to use independent judgment in determining methods, techniques, and evaluation criteria.
Comprehensive verbal and written communication skills necessary to effectively collaborate in a team environment and present and explain technical information.

Qualifications We Desire

Master’s (MS) or PhD in Mechanical Engineering

Pay Range $121,830 - $185,544 Annually

$121,830 - $154,500 Annually for the SES.1 level

$146,340 - $185,544 Annually for the SES.2 level This is the lowest to highest salary we in good faith believe we would pay for this role at the time of this posting; pay will not be below any applicable local minimum wage. An employee’s position within the salary range will be based on several factors including, but not limited to, specific competencies, relevant education, qualifications, certifications, experience, skills, seniority, geographic location, performance, and business or organizational needs. Additional Information

Position Information This is a Career Indefinite position, open to Lab employees and external candidates.

Why Lawrence Livermore National Laboratory?

Included in 2026 Best Places to Work by Glassdoor!
Flexible Benefits Package
401(k)
Relocation Assistance
Education Reimbursement Program
Flexible schedules (*depending on project needs)
Our values - visit https://www.llnl.gov/inclusion/our-values

Security Clearance This position requires a Department of Energy (DOE) Q-level clearance. If you are selected, we will initiate a Federal background investigation to determine if you meet eligibility requirements for access to classified information or matter. Also, all L or Q cleared employees are subject to random drug testing. Q-level clearance requires U.S. citizenship.

Pre-Employment Drug Test External applicant(s) selected for this position must pass a post-offer, pre-employment drug test. This includes testing for use of marijuana as Federal Law applies to us as a Federal Contractor.

Wireless and Medical Devices Per the Department of Energy (DOE), Lawrence Livermore National Laboratory must meet certain restrictions with the use and/or possession of mobile devices in Limited Areas. Depending on your job duties, you may be required to work in a Limited Area where you are not permitted to have a personal and/or laboratory mobile device in your possession. This includes, but not limited to cell phones, tablets, fitness devices, wireless headphones, and other Bluetooth/wireless enabled devices. If you use a medical device, which pairs with a mobile device, you must still follow the rules concerning the mobile device in individual sections within Limited Areas. Sensitive Compartmented Information Facilities require separate approval. Hearing aids without wireless capabilities or wireless that has been disabled are allowed in Limited Areas, Secure Space and Transit/Buffer Space within buildings.

Pre-Placement Medical Exam A job related pre-placement medical examination may be required.

How to identify fake job advertisements Please be aware of recruitment scams where people or entities are misusing the name of Lawrence Livermore National Laboratory (LLNL) to post fake job advertisements. LLNL never extends an offer without a personal interview and will never charge a fee for joining our company. All current job openings are displayed on the Career Page under “Find Your Job” of our website. If you have encountered a job posting or have been approached with a job offer that you suspect may be fraudulent, we strongly recommend you do not respond. To learn more about recruitment scams: https://www.llnl.gov/sites/www/files/2023-05/LLNL-Job-Fraud-Statement-Updated-4.26.23.pdf

Equal Employment Opportunity We are an equal opportunity employer that is committed to providing all with a work environment free of discrimination and harassment. All qualified applicants will receive consideration for employment without regard to race, color, religion, marital status, national origin, ancestry, sex, sexual orientation, gender identity, disability, medical condition, pregnancy, protected veteran status, age, citizenship, or any other characteristic protected by applicable laws. Reasonable Accommodation Our goal is to create an accessible and inclusive experience for all candidates applying and interviewing at the Laboratory. If you need a reasonable accommodation during the application or the recruiting process, please use our online form to submit a request.

California Privacy Notice The California Consumer Privacy Act (CCPA) grants privacy rights to all California residents. The law also entitles job applicants, employees, and non-employee workers to be notified of what personal information LLNL collects and for what purpose. The Employee Privacy Notice can be accessed here.

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