Senior Energy and Climate Tech jobs hiring now at vetted startups and product companies on Alion, updated daily. Average salary around $148,808/year. Compare remote, hybrid and on-site positions with relocation and visa sponsorship. Browse and apply today.
dayzim.com · HQ: Philadelphia, United States · Nuclear Engineering · Nuclear Energy · 11-50 employees · Est. 1901 · Hiring 101, 16 new
HQ: Philadelphia, United States · Nuclear Engineering · Nuclear Energy · 11-50 employees · Est. 1901 · Hiring 101, 16 new
Day & Zimmermann is a family-owned Philadelphia company providing construction and engineering, maintenance and modifications, staffing, security and defense munitions services to corporations and governments. Founded in 1901, it has a global workforce of about 32,000, annual revenue of about 2.9 billion dollars, more than 900 work locations and a footprint at 57 percent of the US nuclear fleet, with units that include American Ordnance and Mason and Hanger. It hires nuclear electrical and mechanical engineers, production operators, laboratory and quality technicians, hazmat truck drivers, RPO recruiters, network engineers and engineering interns.
radiantnuclear.com · HQ: El Segundo, United States · Nuclear Energy · 201-500 employees · Est. 2020 · Likely startup · Trust A · Hiring 92, 4 new
HQ: El Segundo, United States · Nuclear Energy · 201-500 employees · Est. 2020 · Likely startup · Trust A · Hiring 92, 4 new
Radiant Nuclear, legally Radiant Industries, is a nuclear energy startup based in El Segundo, California, that designs portable, factory-built microreactors meant to replace diesel generators at hospitals, data centers, remote sites and military bases. Founded in 2020, the company is developing Kaleidos, a 1-megawatt fail-safe microreactor that can be transported by road and run for up to five years without refueling, with testing planned at Idaho National Laboratory and first customer deliveries targeted for 2028. It hires mechanical, turbomachinery, power electronics, electrical, embedded software, manufacturing and reactor operations engineers plus regulatory and government affairs staff.
$150k – $200k per year · Equity · Senior · 3+ years exp · In office (Long Beach, United States) · Bachelor's Degree · Full-Time · Hazardous materials · Senior
enagas.es · HQ: Madrid, Spain · Hydrogen Energy · Oil & Gas · Trust B · Hiring 29, 3 new
HQ: Madrid, Spain · Hydrogen Energy · Oil & Gas · Trust B · Hiring 29, 3 new
Enagás is a Spanish energy infrastructure company that develops, maintains and operates natural gas pipelines, LNG regasification plants and storage, and is the technical manager of Spain's gas system. With more than 50 years of history, it is developing hydrogen infrastructure and hires plant operators, maritime engineers and system operation technicians. The company is headquartered in Madrid, Spain.
helionenergy.com · HQ: Everett, United States · Nuclear Engineering · Nuclear Energy · 501-1000 employees · Est. 2013 · Trust A · Hiring 65, 12 new
HQ: Everett, United States · Nuclear Engineering · Nuclear Energy · 501-1000 employees · Est. 2013 · Trust A · Hiring 65, 12 new
Helion Energy is an American fusion power research company developing commercial clean energy technology. The firm focuses on building magneto-inertial fusion generators designed to harvest electricity directly through magnetic induction without relying on traditional steam turbines. By aiming to produce zero-carbon power from abundant fuel sources like deuterium and helium-3, it strives to deliver scalable and cost-effective baseload energy for the grid.
flagstar.com · HQ: Hicksville, United States · Leasing, Auto & Equipment Finance · Business & SME Lending · Mortgage Lending & Brokers · Commercial & Retail Banks · 1001-5000 employees · Trust B · Hiring 97, 11 new
HQ: Hicksville, United States · Leasing, Auto & Equipment Finance · Business & SME Lending · Mortgage Lending & Brokers · Commercial & Retail Banks · 1001-5000 employees · Trust B · Hiring 97, 11 new
Flagstar Bank is a US regional bank headquartered in Hicksville, New York, offering retail and private banking, commercial and middle-market lending, commercial real estate finance, equipment finance and mortgage services. The bank combines New York Community Bancorp, whose savings bank roots date to the nineteenth century, and Michigan-based Flagstar Bancorp, acquired in 2022; all branches were rebranded under the Flagstar name in 2024, with a large footprint in New York, New Jersey, Michigan, Ohio, Indiana, Florida and California. It hires branch banking leaders, relationship managers, credit and special assets analysts, loan operations staff, fraud analysts and regulatory managers.
tcenergy.com · HQ: Calgary, Canada · Oil & Gas · 5000+ employees · Est. 1951 · NYSE: TRP · Trust A · Hiring 42, 14 new
HQ: Calgary, Canada · Oil & Gas · 5000+ employees · Est. 1951 · NYSE: TRP · Trust A · Hiring 42, 14 new
TC Energy is a North American energy infrastructure company headquartered in Calgary, Alberta, that builds and operates natural gas pipelines and storage, as well as power generation assets, across Canada, the United States and Mexico. The company traces its roots to TransCanada PipeLines, founded in 1951, is listed on the Toronto and New York stock exchanges and runs major operations centres in Calgary, Houston and Charleston. It hires pipeline technicians, gas schedulers, controls and operations planning engineers, project managers, environmental permitting and tax analysts, security analysts and interns.
on.energy · HQ: Miami, United States · Power Grid · Power Supplies & Power Electronics · Energy Storage · 201-500 employees · Est. 2016 · Startup · Trust B · Hiring 42, 4 new
HQ: Miami, United States · Power Grid · Power Supplies & Power Electronics · Energy Storage · 201-500 employees · Est. 2016 · Startup · Trust B · Hiring 42, 4 new
ON.energy, legally ON Energy Storage Inc., is an energy infrastructure company headquartered in Miami, Florida, that develops, builds and operates grid-scale battery storage and power systems for AI data centers. Founded in 2016, it sells a patented medium-voltage AI UPS that shields data centers and the grid from each other, has offices in Houston, Tysons and Mexico, and announced a 5 GW deployment partnership with Crusoe across hyperscale campuses. It hires facility and site readiness technicians, SCADA, controls and systems engineers, electrical and Revit designers, field service technicians and corporate staff.
navarro-inc.com · HQ: Oak Ridge, United States · Environmental Science · Engineering Services · Nuclear Engineering · Est. 1993 · Trust B · Hiring 39, 7 new
HQ: Oak Ridge, United States · Environmental Science · Engineering Services · Nuclear Engineering · Est. 1993 · Trust B · Hiring 39, 7 new
Navarro Research and Engineering is a US federal contractor founded in 1993 that provides environmental, nuclear, technical and infrastructure services to government programmes. It supports the Department of Energy and NNSA, NASA and the Department of Defense with project management, project controls, quality assurance, cost estimating, construction oversight and environmental remediation at sites such as Los Alamos, Idaho Falls and Niskayuna. The company is headquartered in Oak Ridge, Tennessee, United States.
≈ $69k – $156k per year (Estimated) · Senior · 5+ years exp · In office (Houston, United States) · Full-Time · Nationals only · Citizenship or vetting required · Senior
opg.com · HQ: Toronto, Canada · Hydroelectric · Nuclear Energy · 501-1000 employees · Hiring 16, 6 new
HQ: Toronto, Canada · Hydroelectric · Nuclear Energy · 501-1000 employees · Hiring 16, 6 new
Ontario Power Generation is the Ontario electricity generator operating nuclear, hydro and other plants. Its postings cover market model developers, energy market affairs, electrical and mechanical engineers, control technologists and millwright apprentices, with a base location in Toronto and sites in the Durham region. The company is headquartered in Toronto, Ontario, Canada.
iberdrola.com · HQ: Bilbao, Spain · Energy Storage · Power Grid · Wind Energy · Solar Energy · 5000+ employees · Est. 1901 · Trust A · Hiring 184, 35 new
HQ: Bilbao, Spain · Energy Storage · Power Grid · Wind Energy · Solar Energy · 5000+ employees · Est. 1901 · Trust A · Hiring 184, 35 new
Iberdrola is a Spanish utility founded in 1901 that became one of the largest renewable energy operators in the world, having decided in the early 2000s to build wind and hydro capacity while most European utilities were still committed to fossil generation. It operates regulated electricity networks in Spain, the United Kingdom through ScottishPower, the United States through Avangrid and Brazil through Neoenergia, alongside a very large renewable generation fleet including offshore wind. Headquartered in Bilbao and listed in Madrid, it now earns the majority of profit from regulated networks rather than from selling power.
secheron.com · HQ: Satigny, Switzerland · Power Supplies & Power Electronics · Electrical Equipment & Cables · Rail Transport · 1001-5000 employees · Est. 1879 · Trust B · Hiring 55, 2 new
HQ: Satigny, Switzerland · Power Supplies & Power Electronics · Electrical Equipment & Cables · Rail Transport · 1001-5000 employees · Est. 1879 · Trust B · Hiring 55, 2 new
Sécheron is a Swiss manufacturer of electrical equipment for railways and other DC power applications, producing high-speed DC circuit breakers, traction power substation equipment, rolling stock components and energy measurement systems, as well as power conversion solutions for hydrogen electrolysis and mining. Together with Hasler it forms the Sécheron Hasler Group, with production and sales sites in Europe, Asia and the Americas. The company is headquartered in Satigny, near Geneva, Switzerland.
nuscalepower.com · HQ: Corvallis, United States · Nuclear Engineering · Nuclear Energy · Est. 2007 · NYSE: SMR · Trust A · Hiring 35, 3 new
HQ: Corvallis, United States · Nuclear Engineering · Nuclear Energy · Est. 2007 · NYSE: SMR · Trust A · Hiring 35, 3 new
NuScale Power is a US nuclear technology company based in Corvallis, Oregon, that develops and markets small modular reactors built around its NuScale Power Module, the first SMR design to receive US Nuclear Regulatory Commission design approval. Founded in 2007 on research from Oregon State University, it is listed on the New York Stock Exchange and has offices in Oregon, Rockville, Maryland and Houston, Texas. It hires mechanical, nuclear fuels, radiological, simulator and R&D engineers, licensing and quality assurance specialists, project managers and finance staff, often with remote options.
xcimer.energy · HQ: Denver, United States · Air Defense · Lasers & Laser Systems · Nuclear Energy · 201-500 employees · Est. 2021 · Trust A · Hiring 57, 2 new
HQ: Denver, United States · Air Defense · Lasers & Laser Systems · Nuclear Energy · 201-500 employees · Est. 2021 · Trust A · Hiring 57, 2 new
Xcimer Energy is a Denver-based company developing laser-driven inertial fusion power and high-energy laser systems for air defense, built around large electron-beam-pumped excimer lasers. In 2024 it began building Phoenix, its first high-energy laser system, in its Denver laser bay, it has had a fusion power plant preconceptual design milestone approved by the US Department of Energy, and RTX has invested in it to develop directed energy technology. It hires optical, laser, pulsed power and nuclear engineers, physicists and materials scientists, scientific software and data engineers, technicians, quality and supply chain leaders, and summer interns.
$140k – $165k per year · Senior · 5+ years exp · In office (Denver, United States) · Bachelor's Degree · Full-Time · Nationals only · Citizenship or vetting required · Senior
$140k – $165k per year · Senior · 5+ years exp · In office (Denver, United States) · Bachelor's Degree · Full-Time · Nationals only · Citizenship or vetting required · Senior
$100k – $120k per year · Senior · 5+ years exp · In office (Denver, United States) · Bachelor's Degree · Full-Time · Nationals only · Citizenship or vetting required · Senior
inpasa.com.br · HQ: Sinop, Brazil · Energy & Utilities · Alternative Fuels · Bioenergy · 1001-5000 employees · Trust A · Hiring 42, 6 new
HQ: Sinop, Brazil · Energy & Utilities · Alternative Fuels · Bioenergy · 1001-5000 employees · Trust A · Hiring 42, 6 new
Headquartered in Sinop, Mato Grosso, Brazil, Inpasa is the largest producer of corn-based ethanol and grain biorefinery in Latin America. The company specializes in manufacturing renewable energy, high-protein animal feed (DDGS), and vegetable oils derived from agricultural commodities. Through its advanced industrial plants across Brazil and Paraguay, it plays a pivotal role in supplying sustainable biofuels and advancing the global green economy.
spacex.com · HQ: Starbase, United States · Satellite Manufacturing · Satellite Communications · Launch Services · 5000+ employees · Est. 2002 · Trust B · Hiring 2589, 153 new
HQ: Starbase, United States · Satellite Manufacturing · Satellite Communications · Launch Services · 5000+ employees · Est. 2002 · Trust B · Hiring 2589, 153 new
SpaceX is an American aerospace manufacturer and launch services provider founded by Elon Musk in 2002 with the goal of making life multiplanetary. It developed the reusable Falcon 9, now by far the most flown orbital rocket in the world, the Dragon capsule that carries NASA astronauts to the International Space Station, and Starship, the fully reusable super-heavy vehicle intended for lunar and Mars missions. The company also operates Starlink, a satellite constellation of thousands of spacecraft providing broadband to consumers, aircraft, ships and militaries, which has become its largest source of revenue.
≈ $117k – $212k per year (Estimated) · Senior · 5+ years exp · In office (Bastrop, United States) · Bachelor's Degree · Nationals only · Hazardous materials · Senior
bump-charge.com · HQ: Paris, France · EV Charging · 11-50 employees · Est. 2020 · Hiring 7, 1 new
HQ: Paris, France · EV Charging · 11-50 employees · Est. 2020 · Hiring 7, 1 new
Bump finances, installs and operates electric vehicle charging points for fleets, housing blocks and local authorities. It takes on the capital cost and runs the stations as a service, sharing revenue with site owners. The company is headquartered in Paris and focuses on professional fleets in France.
transgridenergy.com · HQ: Irvine, United States · Solar Energy · Energy Storage · 1-10 employees · Hiring 17, 7 new
HQ: Irvine, United States · Solar Energy · Energy Storage · 1-10 employees · Hiring 17, 7 new
TransGrid Energy is an American renewable energy company that develops, owns and operates utility-scale battery energy storage systems and solar PV projects. An affiliate of the Hanwha Group, it has projects under construction and in development across the United States. The company is headquartered in Irvine, California, United States.
rolls-royce-smr.com · HQ: Derby, United Kingdom · Nuclear Engineering · Nuclear Energy · 1001-5000 employees · Trust A · Hiring 50, 10 new
HQ: Derby, United Kingdom · Nuclear Engineering · Nuclear Energy · 1001-5000 employees · Trust A · Hiring 50, 10 new
Rolls-Royce SMR is a British nuclear technology company developing a small modular reactor, a factory-built pressurised water reactor plant of about 470 megawatts, from its headquarters in Derby, England. Majority-owned by Rolls-Royce with investors including Qatar Investment Authority and the Czech utility CEZ, it was selected in 2025 by Great British Energy - Nuclear as the preferred technology for the first UK SMR programme and runs offices in Derby, Manchester and Warrington. It hires control and instrumentation engineers, civil and structural engineers, project, commercial and construction managers, radiological protection specialists, buyers and industrialisation leads.
bantrel.com · HQ: Calgary, Canada · Construction · Engineering Services · Oil & Gas · 501-1000 employees · Est. 1983 · Hiring 17, 3 new
HQ: Calgary, Canada · Construction · Engineering Services · Oil & Gas · 501-1000 employees · Est. 1983 · Hiring 17, 3 new
Bantrel is a Canadian engineering, procurement and construction company that delivers projects for the oil and gas, oil sands, refining, petrochemical, power and mining sectors. It provides engineering design, procurement, construction management and fabrication services from offices in Western Canada and Toronto, and is affiliated with Bechtel. Founded in 1983, the company is headquartered in Calgary, Alberta, Canada.
