Find work in the United States.

A simpler way to find your next job.

Jobs in the United States

25+ jobs

Save this search

Added just now
Technology & Low Voltage Systems Designer
Salas O'Brien
Corona, CA
Develop system layouts, riser diagrams, and technical project specifications
Added 2 mins ago
Facilities Director
US AMR-Jones Lang LaSalle Americas, Inc.
Thornton, CO · Boulder, CO
Added 2 mins ago
Construction Project Engineer
TGG Accounting
Torrington, CT
The Assistant Project Manager will report to a Project Manager and/or Project Engineer, with project assignment based on experience and current workload. On projects over $25M, the…
Added 3 mins ago
Sr. Mechanical Engineer
Ralliant
Fairport, NY
As a Sr. Mechanical Engineer in transformer value stream, you will play a key role in product design of devices to monitor transformer health. You will be designing, developing, creating…
Added 3 mins ago
SC
IT Director
SmartTech Contracting LLC
Remote, United States
- $140,000 to $180,000 USD / year
STC engineers, project teams, and field staff are increasingly building their own software, automations, and AI agents. The IT Director is a builder and an enabler, not a gatekeeper.…
Added 3 mins ago
Hardware Reliability Engineer - Battlespace Awareness
Anduril Industries
Fort Collins, CO
We are seeking an experienced Reliability Engineer to join our team in Fort Collins, CO, driving reliability for our Battlespace Awareness product line. This is a hands-on role focused on…
Added 4 mins ago
GNC M&S Engineer
Modern Technology Solutions Inc
Beavercreek, OH · Beavercreek
…apply them in a multi-tasking environment where more than one project may require the candidate’s participation at any given time (typically one primary project and one or two ancillary…
Added 4 mins ago
Chief Engineer Level 5 - Linthicum
CORP-Corporate Office
United States
…personal network and developing skills, whether you are new to the field or an industry thought-leader. At Northrop Grumman, you’ll have the resources, support, and team to do some of the…
Added 4 mins ago
Chief Engineer Level 6 - Linthicum
CORP-Corporate Office
United States
…personal network and developing skills, whether you are new to the field or an industry thought-leader. At Northrop Grumman, you’ll have the resources, support, and team to do some of the…
Added 4 mins ago
Principal / Sr Principal Engineer Systems Modeling Simulation
CORP-Corporate Office
United States
Northrop Grumman Aerospace Systems has an opening for a Senior Principal or Principal Engineer Systems Modeling and Simulation, to join our team of qualified, diverse individuals. This…
Added 5 mins ago
Senior Professional Engineer, Structural Engineering
Simpson Gumpertz & Heger
Washington, DC
…We implement innovative techniques for design, analysis, and project management. SGH laboratories support our design and investigation work with material, mechanical, and environmental…
Added 6 mins ago
Regional Engineer II
RFR US
Bakersfield, CA
The Engineer supports the department’s two primary functions: Applications Support and New Product Development. We believe our applications knowledge gained through our support function…
Added 6 mins ago
Regional Engineer II
RFR US
Bakersfield, CA
The Engineer supports the department’s two primary functions: Applications Support and New Product Development. We believe our applications knowledge gained through our support function…
Added 7 mins ago
Manager, GTM Consulting (Professional Services)
ZoomInfo Technologies LLC
Waltham, MA
Lead, manage, and develop a high-performing GTM Engineer team, including Team Leads, Senior GTM Engineers, and Principal GTM Engineers, through regular one-on-ones, performance feedback,…
Added 7 mins ago
Fellow Engineer - Structural Analyst - 1586
EGS
Aiken, SC
EGS, Inc. is seeking a highly experienced Fellow Engineer - Structural Analyst to provide advanced structural engineering analysis and design support for nuclear facilities at the Savannah…
Added 7 mins ago
Technical Engineer
Highmark Health
Working at Home, PA · Working at Home, MD · Working at Home, WA · Working at Home, LA · Working at Home, KY · Working at Home, KS · Working at Home, IN · Working at Home, IL · Working at Home, IA · Working at Home, FL · Working at Home, CO · Working at Home, CA · Working at Home, DE · Working at Home, AR · Working at Home, AZ · Working at Home, AL · Working at Home, AK · Working at Home, NV · Working at Home, VT · Working at Home, ID · Working at Home, OK · Working at Home, HI · Working at Home, MS · Working at Home, UT · Working at Home, NH · Working at Home, NM · Working at Home, WY · Working at Home, ND · Working at Home, RI · Working at Home, MT · Working at Home, TX · Working at Home, OH · Working at Home, NJ · Working at Home, OR · Working at Home, MO · Working at Home, VA · Working at Home, NE · Working at Home, MN · Working at Home, MI · Working at Home, WI · Working at Home, NY · Working at Home, ME
3 years of technical problem solving, solution implementation, team/project collaboration experience
Added 8 mins ago
Associate Network Engineer
University of Arkansas for Medical Sciences
Remote, United States
Associate Degree in Computer Science or related field, plus two (2) years of Information Technology experience or other relevant experience in a large data network environment, with four…
Added 8 mins ago
P&C Manager
POWERX Edge
Atlanta, GA
We deliver engineering, protection and control, commissioning, NETA field services, and compliance, supporting the full lifecycle of power infrastructure. With a multinational footprint…
Added 8 mins ago
GV
R&D Machinist - 1st Shift
GE Vernova
Parsippany, NJ
- $32.5 to $42 USD / hour
Reverse engineer prototypes and existing machine components to create production-ready technical drawings and build plans.
Added 8 mins ago
Senior Customer Reliability Engineer
GE Vernova
Atlanta, GA
- Coordinate with field technicians and maintenance personnel
Added 8 mins ago
MM
Procurement Manager, Construction
Mariana Minerals
San Francisco, CA · Houston, TX · Moab, UT · Ann Arbor, MI
- $130,000 to $180,000 USD / year
- Manage change orders, claims, and disputes with field and project controls teams, verifying pricing against contract rates and markups.
Added 9 mins ago
Senior Project Engineer - Silicon Valley Construction (Job Site)
Mill Creek Residential
East Palo Alto, CA
At MCRT the Senior Project Engineer will assist the Project Manager(s) with the planning and daily execution in the construction of various types of high density residential and mixed use…
Added 9 mins ago
M/E Engineer 2
J.E. Dunn Construction Group Inc P
Willston, ND · Dickinson, ND
The M/E Engineer 2 will complete routine mechanical, electrical and field construction activities. This position will be responsible for collecting and assembling data, helping to develop…
Added 9 mins ago
Industrial Engineer
KLUTE INC
York, NE
Klute is seeking an Industrial Engineer to help shape the future of our manufacturing operations. This highly visible role blends industrial engineering with continuous improvement, giving…
Added 9 mins ago
Electron Beam Lithography Engineer
Stanford
Stanford, CA
unique assignments important to the advancement of the field.

LLNL

Senior Mechanical Engineer - Active Clearance Required

Livermore, CA, United States

Apply About employer

Applications open in a new tab.

Job details

Posting language: English
Posted: Nov 9, 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

We have multiple openings for Senior Mechanical Engineers to participate in new and ongoing projects. We provide nuclear weapon engineering design expertise; systems engineering; experimental device design; fabrication and assembly; surveillance of nuclear stockpile components; engineering analysis and computational simulation; and engineering testing for evaluation and maintenance of the enduring and future nuclear weapon stockpile. Our engineers interface with colleagues at other National Laboratories and Production Agencies, National Nuclear Security Administration (NNSA), and Department of Defense (DoD) and their contractors. These positions are in the Defense Technologies Engineering Division (DTED), within the Engineering Directorate. DTED provides support to Strategic Deterrence Programs. 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. These positions 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

Provide technical expertise in mechanical and electromechanical design.
Conduct research in structural, thermal, hydraulic, or dynamics modeling of mechanical systems.
Produce advanced conceptual and detail designs in support of on-going projects.
Prepare supporting health and safety documentation that is aligned with the Integrated Safety Management (ISM) requirement and participate in design and Management Prestart Reviews.
Coordinate project interfaces and deployment interfacing with other organizations internal and external to the Laboratory.
Lead and/or provide guidance and technical direction to multidisciplinary project teams in a growing, dynamic environment.
Perform other duties as assigned.

Additional job responsibilities, at the SES.4 level

Set broad project vision and strategy and influence technical direction for self and others.
Provide expert capability in highly complex mechanical design and analysis.

Qualifications

This position requires an active Department of Energy (DOE) Q-level clearance or active Top Secret clearance issued by another U.S. government agency at the time of hire.
Bachelor's degree in Mechanical Engineering or a related field, or the equivalent combination of education and related experience.
Advanced knowledge of mechanical design.
Significant experience in prototype development and testing, as well as hardware design and analysis.
Ability to devise solutions for unique and complex problems.
Ability and flexibility to reprioritize and change programmatic direction depending on emergent requests.
Significant experience in managing, overseeing, and delivering multiple projects on budget and schedule.
Ability to lead, manage, and mentor junior team members.
Advanced communication skills with proven ability to present concepts and ideas in a clear and coherent manner, both verbal and written for presentation and interaction with other technical staff members.

Additional qualifications at the SES.4 level

Expertise in highly complex mechanical design and analysis and significant experience in project planning and highly complex technical leadership.
Significant experience developing and implementing creative solutions to a diverse range of highly complex problems and leading corrective actions where necessary.
Expert communication, facilitation, and collaboration skills necessary to present, explain, and advise senior management and/or external sponsors and proven record of team building and conflict resolution.

Qualifications We Desire

Master's degree or PhD in Mechanical Engineering or a related field.
Advanced knowledge of systems engineering principles and practices and their application.

Pay Range $175,530 - $267,060 Annually $175,530 - $222,564 Annually for SES.3 Level

$210,630 - $267,060 Annually for SES.4 Level This is the lowest to highest salary in good faith 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 an active Department of Energy (DOE) Q-level clearance or active Top Secret clearance issued by another U.S. government agency at time of hire.

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.

Apply About employer

More about this job

Skills

Assembly
Provide technical expertise
Research
Mechanical systems
Health and safety
Documentation
Mechanical engineering
Design hardware
Communication skills
Leadership
Collaboration
Team building
Conflict resolution
Engineering principles

Report this job