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18 junior engineer jobs found

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Energy & Materials junior engineer California
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Qc
Mar 22, 2026
Full time
Senior HV Engineer - Level 4
$145,000 - $165,000 yearly
Qcells Irvine, CA
Description Title: Senior HV Engineer - Level 4 Department: Engineering Center Location: Irvine, CA Supervisor: Director of SME FLSA Status: Exempt Position Status: Permanent, Full -Time Work Status (Remote/Hybrid/In-Office): Remote SENIOR HV ENGINEER - LEVEL 4 Hanwha Qcells USA Corp (Qcells USA), headquartered in Irvine, CA, specializes in providing utility-scale modules, solar photovoltaic (PV), and battery energy storage systems (BESS) project development, along with Engineering, Procurement, and Construction (EPC) services for solar and BESS projects nationwide. Qcells USA delivers comprehensive turnkey solutions encompassing the entire utility-scale project lifecycle. By choosing Qcells USA for turnkey solutions, customers can reduce uncertainty and risk, leading to enhanced investment returns and contributing to a more sustainable future. Qcells USA's complete turnkey solutions seamlessly integrate the expertise of our Module, Development, and EPC...
Qc
Feb 26, 2026
Full time
Senior Civil Engineer - Level 4
$145,000 - $170,000 yearly
Qcells Irvine, CA
Description Title: Senior Civil Engineer Level 4 Department: Engineering Center Location: Irvine, CA Supervisor: Manager of Civil / Structural Engineering FLSA Status: Exempt Position Status: Permanent, Full -Time Work Status (Remote/Hybrid/In-Office): Remote SENIOR CIVIL ENGINEER LEVEL 4 Hanwha Qcells USA Corp ( Qcells USA), headquartered in Irvine, CA, specializes in providing utility-scale modules, solar photovoltaic (PV), and battery energy storage systems (BESS) project development, along with Engineering, Procurement, and Construction (EPC) services for solar and BESS projects nationwide. Qcells USA delivers comprehensive turnkey solutions encompassing the entire utility-scale project lifecycle. By choosing Qcells USA for turnkey solutions, customers can reduce uncertainty and risk, leading to enhanced investment returns and contributing to a more sustainable future. Qcells USA's complete turnkey solutions seamlessly integrate the expertise of our...
PF
Feb 16, 2026
Full time
Senior Mechanical Design Engineer - Positioning Systems
Pacific Fusion San Leandro, CA
About Pacific Fusion Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy. We are rapidly designing and building a pulsed magnetic fusion system to achieve net facility gain (more fusion energy output than stored energy input). In parallel, we are developing the key components required to build affordable fusion systems. Our plans are ambitious. We have raised over $900M so far from incredible investors, resourcing us to deliver on these plans. We are bringing together the best scientists, engineers, and operators from the fusion community, hard tech industry, and other sectors. We are united by a shared sense of urgency to provide clean power for the world, particularly managing climate change while meeting growing global energy demand. You can read more about us in this letter from our founders. Why This Role Matters Pacific Fusion is seeking an exceptional Senior Mechanical Design Engineer to join our dynamic...
KP
Dec 25, 2025
Full time
Senior Engineer, Reactor Vessel Auxiliary Systems
Kairos Power Alameda, CA
Company Overview Kairos Power is a new nuclear energy technology and engineering company whose mission is to enable the world's transition to clean energy, with the ultimate goal to dramatically improve people's quality of life while protecting the environment. This goal will be accomplished through the commercialization of the fluoride-salt-cooled, high-temperature reactor (FHR) that can be deployed with robust safety, affordable costs, and flexible operation to accommodate the expansion of variable renewables. Job Summary The Reactor Vessel Auxiliary Systems team is seeking a highly motivated Senior Engineer to join the growing Reactor Systems department where you will have the opportunity to work directly on the design, integration, and assembly of the structures, systems, and components (SSCs) within the reactor cavity in a first-of-a-kind FHR. In this role, you will manage and coordinate the detailed layout of reactor cavity components including routing of fuel, salt,...
KP
Dec 19, 2025
Full time
Senior Civil Structural Engineer
Kairos Power Alameda, CA
Company Overview Kairos Power is a new nuclear energy technology and engineering company whose mission is to enable the world's transition to clean energy, with the ultimate goal to dramatically improve people's quality of life while protecting the environment. This goal will be accomplished through the commercialization of the fluoride-salt-cooled, high-temperature reactor (FHR) that can be deployed with robust safety, affordable costs, and flexible operation to accommodate the expansion of variable renewables. Job Summary Kairos Power is seeking a Senior Civil Structural Engineer to support the structural design of the reactor building for its Generation IV Nuclear Power Plant, including scaled prototypes and test facilities. As part of the Design Phase Interface Team, this role ensures seamless coordination of structural design across disciplines through technical guidance, clash resolution, stakeholder collaboration, and advanced structural analysis. The ideal candidate...
GF
Apr 23, 2026
Full time
Principal Civil / Structural Engineer
$140,000 - $180,000 yearly
Gannett Fleming, Inc. Roseville, CA
GFT is seeking a talented Principal Civil / Structural Engineer to join our team in our Roseville, CA. This role follows a hybrid work model, requiring regular attendance at our Roseville office. Our specialists have the in-depth knowledge to excel on the most challenging geotechnical assignments. We provide innovative solutions for foundations; underground construction; earth structures, including dams and levees; groundwater resources; and marginal building sites. Our geotechnical engineers and geologists also specialize in landslides, sinkholes, mine subsidence, seepage, expansive soils, and seismic activity. We have completed more than 1,000 subsurface and geophysical projects across the U.S. - from small-scale projects to large, complex dams, highways, bridges, and underground structures. What you'll be challenged to do: In this role, you will support critical infrastructure design and construction across the California foothills and mountains. Our projects include...
Qc
Apr 17, 2026
Full time
Electrical Engineer - Level 3
$135,000 - $150,000 yearly
Qcells CA
Description Title: Electrical Engineer Level 3 Department: Engineering Location: Irvine, CA Supervisor: Manager of Electrical Engineering FLSA Status: Exempt Position Status: Permanent, Full-Time Work Status: Hybrid ELECTRICAL ENGINEER LEVEL 3 Hanwha Qcells USA Corp ( Qcells USA), headquartered in Irvine, CA, specializes in providing utility-scale modules, solar photovoltaic (PV), and battery energy storage systems (BESS) project development, along with Engineering, Procurement, and Construction (EPC) services for solar and BESS projects nationwide. Qcells USA delivers comprehensive turnkey solutions encompassing the entire utility-scale project lifecycle. By choosing Qcells USA for turnkey solutions, customers can reduce uncertainty and risk, leading to enhanced investment returns and contributing to a more sustainable future. Qcells USA's complete turnkey solutions seamlessly integrate the expertise of our Module, Development, and EPC teams, while ensuring...
CW
Apr 13, 2026
Full time
Sr. Associate Engineer
$145,800 - $178,200 yearly
Connecticut Water Service San Jose, CA
Job Title Sr. Associate Engineer | Requisition ID req1045 Type of Employment Regular Full-Time Employee | Job Openings 1 Compensation Range 145,800.00 - 178,200.00 | Compensation Type Annual Salary Founded in 1866, San Jose Water Company is an investor owned water company headquartered in Silicon Valley. With a service area of 140 square miles, it is one of the largest and most technically sophisticated urban water system in the United States. We serve over 1 million people with high quality, life sustaining water, with an emphasis on exceptional customer service. We are actively seeking talented, driven and highly-productive applicants for the position of Sr. Associate Engineer to join our dynamic team. We offer a challenging and rewarding work environment along with a competitive salary and an excellent benefits package. The Senior Associate Engineer, Special Facilities - Civil Design at San Jose Water Company plays an integral role in...
GM
Sep 26, 2025
Full time
Structural Design Engineer (SE)
$90,000 - $175,000 yearly
General Matter Los Angeles, CA
About the Company General Matter is enriching uranium in America. Our mission is to restore our country's ability to make nuclear fuel. Our fuel will help power AI, manufacturing, and other critical industries. It will power our next generation of reactors. Ultimately, it will power our national ambitions. We were incubated by Founders Fund, like Anduril and Palantir before us, and we are backed by top tier investors. Our lean, world-class team of engineers and operators is applying a first-principles approach to solving the problem of nuclear fuel production. We are a mission-driven company with a culture of urgency, accountability and transparency. About This Role As a Structural Design Engineer, you will play a pivotal role in executing a state-of-the-art enrichment facility from concept through commissioning. You will design, analyze, and ensure designs meet regulatory requirements for safety, performance, and compliance. You will have the opportunity to work on a...
ST
Apr 23, 2026
Full time
Senior NPI Systems Engineer
Solar Turbines Incorporated San Diego, CA
Career Area: Engineering Job Description: Your Work Shapes the World at Caterpillar Inc. When you join Caterpillar, you're joining a global team who cares not just about the work we do - but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here - we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it. This position in Solar Turbine's Package NPI team offers a rare opportunity to join a collection of high performing individuals who are working together to develop the most innovative and in-demand turbomachinery products in the energy market today. Meeting the challenges of the world's growing energy needs, this team is tasked with developing turbomachinery products serving utilities, data centers and the Oil & Gas industry. The Package NPI team is...
ST
Apr 17, 2026
Full time
Senior Principal Electrical Engineer
$128,470 - $192,710 yearly
Solar Turbines Incorporated San Diego, CA
Career Area: Engineering Job Description: Your Work Shapes the World at Caterpillar Inc. When you join Caterpillar, you're joining a global team who cares not just about the work we do - but also about each other. We are the makers, problem solvers, and future world builders who are creating stronger, more sustainable communities. We don't just talk about progress and innovation here - we make it happen, with our customers, where we work and live. Together, we are building a better world, so we can all enjoy living in it. Job Description This position will serve as an Electrical Engineer within our Facility Engineering group at the Harbor Drive (downtown) facility of Solar Turbines. This position manages electrical projects related to Harbor Drive facility improvements, modifications, or surveys. This includes preparing all estimates related to engineering drawings and specifications for work that is part of a major project or a total project of moderate scope. This...
PF
Apr 11, 2026
Full time
Senior Mechanical Engineer - Fluid Systems
Pacific Fusion Fremont, CA
About Pacific Fusion Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy. We are rapidly designing and building a pulser-driven inertial fusion system to achieve net facility gain (more fusion energy output than stored energy input). In parallel, we are developing the key components required to build affordable fusion systems. Our plans are ambitious. We have raised over $900M so far from incredible investors, resourcing us to deliver on these plans. We are bringing together the best scientists, engineers, and operators from the fusion community, hard tech industry, and other sectors. We are united by a shared sense of urgency to provide clean power for the world, particularly managing climate change while meeting growing global energy demand. You can read more about us in this letter from our founders. Why This Role Matters Pacific Fusion is seeking an exceptional Senior Mechanical Engineer - Fluid Systems to...
Ou
Mar 07, 2026
Full time
Senior Structure Analysis Engineer
Outpost Los Angeles, CA
Senior Structure Analysis Engineer Location: Playa Vista, California (in-person, five days per week) Outpost is pioneering Earth return logistics for space. We're building vehicles that can return payloads from orbit safely and precisely-enabling faster space-based manufacturing, global delivery, and entirely new capabilities in the space economy. Our spacecraft is already backed by the U.S. government with multiple missions ahead. We're a mission-focused team, building with urgency, grit, and care for the work we do and the people we do it with. The Role We're looking for a Senior Structure Analysis Engineer to own structural and thermal analysis across flight hardware, from early design through flight readiness and production. This role sits at the center of engineering decision-making. You will be responsible for ensuring hardware is analytically sound, flight-worthy, and properly dispositioned - working closely with mechanical design, avionics, test,...
KP
Mar 05, 2026
Full time
BIM Senior Engineer I, Civil Structures (Revit Focused)
Kairos Power Remote (Alameda, CA)
Company Overview Kairos Power is a new nuclear energy technology and engineering company whose mission is to enable the world's transition to clean energy, with the ultimate goal to dramatically improve people's quality of life while protecting the environment. This goal will be accomplished through the commercialization of the fluoride-salt-cooled, high-temperature reactor (FHR) that can be deployed with robust safety, affordable costs, and flexible operation to accommodate the expansion of variable renewables. Job Summary Kairos Power is seeking a highly motivated and experienced BIM Senior Engineer I, Civil Structures with a strong background in Revit to lead the implementation and management of Building Information Modeling (BIM) for our diverse civil structures projects. The ideal candidate will be an expert in leveraging Revit for structural modeling while possessing a comprehensive understanding of the broader civil infrastructure digital toolkit. You will be...
SP
Apr 14, 2026
Full time
Senior NPI Engineer (PCBA)
SPAN San Francisco, CA
Our Mission SPAN is enabling electrification for all We are a mission-driven company designing, building, and deploying products that electrify the built environment, reduce carbon emissions, and slow the effects of climate change. Decarbonization is the process to reduce or remove greenhouse gas emissions, especially carbon dioxide, from entering our atmosphere. Electrification is the process of replacing fossil fuel appliances that run on gas or oil with all-electric upgrades for a cleaner way to power our lives. At SPAN, we believe in: Enabling homes and vehicles powered by clean energy Making electrification upgrades possible Building more resilient homes with reliable backup Designing a flexible and distributed electrical grid The Role SPAN is seeking a talented Sr. New Product Introduction (NPI) Engineer. You will play a crucial role in the development and introduction of new products. You will collaborate with cross-functional teams, including...
BP
Apr 09, 2026
Full time
Senior Systems Engineer
BoxPower, Inc. Grass Valley, CA
Systems Engineer is responsible for leading project development, technical support for sales, and system optimization for assigned BoxPower microgrid opportunities. The role may include owning specific feasibility studies and developing the core technical deliverables that inform customer proposals and project direction, including system sizing, system architecture and platforms, conceptual layouts, single-line diagrams, PV production modeling, and Homer-based microgrid modeling. This position works closely with Sales, Estimating, Systems Engineering, Product Engineering, Project Engineering, and external partners to evaluate project viability, shape system concepts, and support successful proposal execution. Other work may include site visits and continuous improvement of tools, templates, and internal processes. This role reports to the Solutions and Estimation Manager. This role has no direct reports. This role is hybrid or remote to BoxPower HQ in Grass Valley, CA. Key...
PF
Apr 15, 2026
Full time
Process Systems Engineer
Pacific Fusion San Leandro, CA
About Pacific Fusion Pacific Fusion was founded in 2023 with the mission to power the world with abundant, affordable, clean energy. We are rapidly designing and building a pulser-driven inertial fusion system to achieve net facility gain (more fusion energy output than stored energy input). In parallel, we are developing the key components required to build affordable fusion systems. Our plans are ambitious. We have raised over $900M so far from incredible investors, resourcing us to deliver on these plans. We are bringing together the best scientists, engineers, and operators from the fusion community, hard tech industry, and other sectors. We are united by a shared sense of urgency to provide clean power for the world, particularly managing climate change while meeting growing global energy demand. You can read more about us in this letter from our founders. Why This Role Matters Pacific Fusion is seeking an experienced & versatile Process Systems Engineer to...
Qc
Apr 12, 2026
Full time
Civil Engineer - Level 2
$115,000 - $130,000 yearly
Qcells Irvine, CA
Description Title: Civil Engineer - Level 2 Department: Engineering Center Location: Irvine, CA Super visor: Manager of Civil / Structural Engineering FLSA Status: Exempt Position Status: Permanent, Full -Time Work Status (Remote/Hybrid/In-Office): Remote CIVIL ENGINEER - LEVEL 2 Hanwha Qcells USA Corp (Qcells USA), headquartered in Irvine, CA, specializes in providing utility-scale modules, solar photovoltaic (PV), and battery energy storage systems (BESS) project development, along with Engineering, Procurement, and Construction (EPC) services for solar and BESS projects nationwide. Qcells USA delivers comprehensive turnkey solutions encompassing the entire utility-scale project lifecycle. By choosing Qcells USA for turnkey solutions, customers can reduce uncertainty and risk, leading to enhanced investment returns and contributing to a more sustainable future. Qcells USA's complete turnkey solutions seamlessly integrate the expertise of our Development,...
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