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11 mechanical engineer iii jobs found in Los Angeles

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Los Angeles Onsite mechanical engineer iii
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An
Aug 25, 2025
Full time
Mechanical Design & Integration Engineer - Space
Antares Los Angeles, CA, USA
About Us At Antares, our long-term mission is to make clean energy abundant from Earth to the Asteroid Belt. We're fueled by the belief that advanced nuclear energy can strengthen our military, solve the climate crisis, elevate global living standards, and expand humanity's presence in outer space. To achieve our mission, we're building mass-producible, inherently safe, deployable microreactors that can be used terrestrially, underwater, and in space. Formed in 2023, the Antares team hails from SpaceX, The White House, MIT, Rigetti Computing, The Air Force, General Atomics, Relativity Space, Ursa Major, Ultra Safe Nuclear, and Los Alamos National Laboratory. Antares has raised over $39M in venture capital from top-tier investors and has over $4M in government funding. About the Team As a Mechanical Design and Integration Engineer in Antares' Mission Engineering team, you will own the design and integration of cutting-edge nuclear terrestrial and space systems. From concept...
TG
Dec 17, 2025
Full time
Office Engineer III - Asset Renewal Program
The Greenridge Group Los Angeles, CA, USA
The Greenridge Group is a prime contractor and consulting firm specializing in Project and Construction Management for major public-sector agencies. We support large-scale capital programs with a commitment to quality, integrity, and technical excellence. We are seeking an Office Engineer III - Asset Renewal Office Engineer to join our team. The Office Engineer III (Asset Renewal Office Engineer) reports to the Asset Renewal Program Manager and supports the administrative and construction requirements of multiple concurrent projects under the Terminal Development & Improvement Program (TDIP). The Asset Renewal Program focuses on replacing end-of-life airport assets, including MEP systems, fire and security systems, vertical and horizontal transportation systems, building enclosures, utilities, baggage systems, and passenger boarding bridges. Salary Range: $125K/Year-$135K/Year - Dependent on Candidate's Qualifications Key Responsibilities Manage administrative...
PP
Dec 15, 2025
Full time
LAWA Office Engineer III
Pacific Pros Los Angeles, CA, USA
Benefits: Paid Holidays 401(k) 401(k) matching Dental insurance Health insurance Paid time off Vision insurance Pacific Pros is seeking Office Engineer III for Construction Projects to be a representative for Los Angeles World Airport (LAWA). Work Location: LAWA has required the candidates be local for this position . Region: Los Angeles, CA Status: Full-time on-site Opening: January 2025, Immediate Position Description Summary Serve as Owner's representative. Synopsis The Asset Renewal Office Engineer reports to the Asset Renewal Program Manager and will oversee the administrative processes and construction requirements of multiple small projects at the same time. The Asset Renewal Program replaces end-of-life airport assets, primarily MEP fire and security systems, vertical and horizontal transportation systems, building enclosure assemblies, below-grade utility systems, baggage systems, and passenger boarding bridges. Essential Job...
VC
Dec 15, 2025
Full time
Office Engineer III (Asset Renewal Office Engineer)
Vanir Construction Management, Inc. Los Angeles, CA, USA
About Vanir Vanir is a proud minority- and woman-owned company, recognized as a national leader in program, project and construction management (PMCM) and real estate development. Since 1964, we have consistently exceeded client expectations. Ranked as a top PMCM firm by Engineering News-Record (ENR) for more than three decades, our award-winning team provides a full range of services to public and private sector clients in the aviation; healthcare; education (K-12 and higher); justice and essential services; science and technology; state and local government; transportation; water and wastewater; energy; and commercial, residential and nonprofit markets. Job Description The Asset Renewal Office Engineer reports to the Asset Renewal Program Manager and will oversee the administrative processes and construction requirements of multiple small projects at the same time. The Asset Renewal Program replaces end-of-life airport assets, primarily MEP fire and security systems,...
HI
Dec 13, 2025
Full time
Office Engineer III
Hill International Los Angeles, CA, USA
Job Description Hill International is seeking an Office Engineer III in Los Angeles, California Responsibilities Experience with the design and construction industries, administrative processes and requirements. Must have experience with payment applications, including quantity dispute resolution. Must have excellent skills in documentation and file organization and maintenance. Experience reviewing and responding to RFI'S. Experience reviewing submittals for compliance with the Contract Documents and. Experience and proficient in reading design drawings and specifications. Able to communicate and interact with the other members of the Asset Renewal team and LAWA departments, City Dept.'s., contractors and Airlines. Available to work modified schedule as construction activities require. Experience with starting up a project and on boarding the contractor or design-builders. Experience closing out projects, including: operations and maintenance manuals, payment...
CG
Dec 13, 2025
Full time
Senior Office Engineer
Cumming Group Los Angeles, CA, USA
At Cumming Group, you will work on some of the world's most exciting projects in a dynamic environment where your success is measured by the impact you make. We are one of the fastest-growing project and cost management consultancies in the United States, as reflected in our top 10 rankings in ENR. With over 60 offices globally, an extremely diverse project portfolio, and double-digit year-over-year revenue growth, the opportunities to make your mark are limitless! We are currently hiring a professional Senior level Office Engineer to support the large construction program at LAX Airport. The position will oversee the administrative processes and construction requirements of multiple small projects at the same time. This position is based on-site at LAX airport. We are seeking an individual with solid understanding of commercial and/or public projects within an active operating environment. Essential Duties & Responsibilities: Experience with the design and construction...
IE
Dec 05, 2025
Full time
Project Manager - Civil Engineering (CA)
Infrastructure Engineering Inc. Los Angeles, CA, USA
Join us at the intersection of INGENUITY & INCLUSION About the Role Infrastructure Engineering Inc. (IEI) is looking for a Project Manager to join our Los Angeles, CA Team! The Project Manager - LA is responsible for the successful completion and delivery of the assigned projects with the high goal of exceeding the client's expectations in quality and service within the allocated schedule and budget. We are a leading engineering firm known for quality and responsiveness and a proven track record of success as a Prime civil engineering firm. The Project Manager, through the Design Manager and Office Manager draws on the other members of the organization to lead the team with the resources, technical guidance, administrative, technical services and facilities necessary for efficient, profitable, timely and technically excellent project execution In this highly visible role, you are expected to help establish marketing services and business connections in key...
On
Nov 14, 2025
Full time
Manufacturing Engineer, Mechanical
Ontic Los Angeles, CA, USA
We are a fast-paced business with ambitious growth plans; so if you are dedicated, enthusiastic and always seeking ways to improve, you'll enjoy a career with us! Ontic is a leading global aerospace OEM trusted by the world's aviation leaders. Ontic's Chatsworth, CA, site specializes in precision engineering, MRO, and new solutions for parts at risk of obsolescence. With over 1,400 employees across four time zones and seven sites, we have more than doubled in size since 2019 and are continuing to grow at pace. Our team is looking for a Manufacturing Engineer, Mechanical, to join them. The Manufacturing Engineer, Mechanical is responsible for providing comprehensive engineering support to production operations to ensure efficient manufacturing processes, high-quality output, and continuous improvement. This role bridges design, production, and quality teams to optimize manufacturing performance and implement cost-effective solutions. To be considered for the Facilities Technician...
An
Oct 30, 2025
Full time
Manufacturing Engineer
Antares Los Angeles, CA, USA
About Us At Antares, our long-term mission is to make clean energy abundant from Earth to the Asteroid Belt. We're fueled by the belief that advanced nuclear energy can strengthen our military, solve the climate crisis, elevate global living standards, and expand humanity's presence in outer space. To achieve our mission, we're building mass-producible, inherently safe, deployable microreactors that can be used terrestrially, underwater, and in space. Formed in 2023, the Antares team hails from SpaceX, The White House, MIT, Rigetti Computing, the Air Force, the Navy, General Atomics, Relativity Space, Ursa Major, Ultra Safe Nuclear, and Los Alamos National Laboratory. Antares has raised over $39M in venture capital from top-tier investors and has over $4M in government funding. About the Team As a member of the Antares R&D team, you will be an expert on manufacturing and assembly of cutting edge nuclear reactors. You will be an instrumental member developing Antares'...
EN
Oct 19, 2025
Full time
Retro Commissioning Engineer II
$111,771 - $149,204 yearly
ENFRA LLC Los Angeles, CA, USA
About Us At ENFRA, we blend a rich history with a forward-looking vision. With over 100 years of experience, we are a pillar of stability in the energy infrastructure industry and a leader in innovative energy solutions. Our commitment to leveraging emerging technologies ensures that we remain at the forefront of the Energy-as-a-Service sector. We believe in growth-not just for our business, but for our people. Our team members have the opportunity to advance their careers in a supportive environment that values continuous learning and development. We embrace innovation and encourage creative problem solving to tackle the energy infrastructure and energy challenges of tomorrow. Inclusion is at the heart of our culture. We strive to create a workplace where every voice is heard and valued, fostering a collaborative environment where diverse perspectives drive our success. Join us to be part of a legacy of excellence and a future of groundbreaking advancements. At ENFRA,...
UA
Sep 24, 2025
Full time
Senior Line Engineer
United Airlines, Inc. Los Angeles, CA, USA
Description At United, we have some of the best aircraft in the world. Our Technical Operations team is full of aircraft maintenance technicians, engineers, planners, ground equipment and facilities professionals, and supply chain teams that help make sure they're well taken care of and ready to get our customers to their desired destinations. If you're ready to work on our planes, join our Tech Ops experts and help keep our fleet in tip-top shape. Job overview and responsibilities Senior Line Engineers are part of a service engineering team that provide 24/7 engineering technical support for United Airlines Worldwide fleet of operational aircraft to ensure the timely return to service. Provide engineering support for a wide range of aircraft systems, maintenance programs, engines as well as operational engineering functions. Studies, analyzes, and seeks solutions to problems related to the design, operation, maintenance, performance, modification, or repair of aircraft,...
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