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Jobs in California, United States
82 open roles read nightly from companies’ own hiring pages. Each one links to the original ad.
21–40 of 82 jobs
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Staff Fluid Systems Engineer
3 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeLead / staff$158K – $219.5K a yearEngineeringRadiant is seeking a highly motivated Staff Fluid Systems Engineer to own critical Kaleidos fluid systems from preliminary design through build and production. These systems include the primary loop subsystems and power conversion loop, serving to convert heat from the reactor…
Senior Fluid Systems Engineer
3 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeSenior$158K – $219.5K a yearEngineeringRadiant is seeking a highly motivated Senior Fluid Systems Engineer to own critical Kaleidos fluid systems from preliminary design through build and production. These systems include the primary loop subsystems and power conversion loop, serving to convert heat from the reactor…
Mechanisms Engineer
3 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeMid level$133.5K – $184.8K a yearEngineeringRadiant is seeking a highly motivated Mechanisms Engineer to design and develop critical mechanisms within Kaleidos. You will solve unique challenges creating efficient and reliable mechanisms that control reactivity or actuate critical safety features. You will be responsible…
Lead Nuclear Materials Engineer
3 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeLead / staff$140.5K – $202.5K a yearEngineeringSet the technical direction for the nuclear materials team, including the definition of project scopes, the guidance of day-to-day engineering and support activities, and the development of a nuclear materials roadmap to support future reactor designs and builds; Deliver…
T&E Accounting Specialist (Contract)
3 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeMid level$41.00 – $59.00 an hourFinanceWe are seeking a T&E (Travel & Expense) Specialist to manage the processing and review of employee T&E activity and credit card charges for our nuclear energy company. You will help ensure expenses are accurate, policy-compliant, and properly recorded, while providing…
Indirect Procurement Associate
4 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeEntry level$85.5K – $122.5K a yearFinanceRadiant is looking for an Indirect Procurement Associate to support sourcing and procurement of indirect goods and services — Facilities, IT, Professional Services, MRO, consumables, and R&D collaborations. This is a hands-on role for someone with strong technical instincts who…
Strategic Sourcing Manager
4 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeMid level$85.5K – $168K a yearOperationsRadiant is seeking a proactive and technically-minded Strategic Sourcing Manager to lead the discovery, qualification, and development of new suppliers and manufacturing technologies in support of our micro-reactor program. This role is foundational to expanding Radiant's…
Senior Material Planner
4 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeSenior$115K – $168K a yearOperationsRadiant is seeking a proactive Senior Material Planner to own material planning across the full lifecycle of our micro nuclear reactors. This role partners with Engineering to translate reactor designs into a company-wide planning bill of materials and works alongside the…
Staff Manufacturing Engineer, DFM
5 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeLead / staff$160K – $210K a yearEngineeringRadiant is seeking a Staff Manufacturing Engineer to help transition Kaleidos from a first-of-a-kind reactor build into a repeatable, scalable production system.
Senior Manufacturing Engineer, DFM
5 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeSenior$133.5K – $184.8K a yearEngineeringRadiant is seeking a Senior Manufacturing Engineer to help transition Kaleidos from a first-of-a-kind reactor build into a repeatable, scalable production system.
Indirect Procurement Manager
5 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeMid level$85.5K – $168K a yearFinanceRadiant is seeking a proactive and strategic Indirect Procurement Manager to lead the sourcing, negotiation, and management of all goods and services for the indirect categories. This role is crucial in building and maintaining a resilient, cost-effective, and reliable supply…
Senior Software Engineer, Frontend
5 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeSenior$158K – $219.5K a yearEngineeringRadiant is seeking a Senior Software Engineer to own the frontend for our in-house telemetry and fleet management platform. You’ll join the Mission Software team, build on top of a highly technical telemetry streaming platform, and work on fleet monitoring systems for Radiant’s…
Radiant Industries · El Segundo, California, United States
On-siteFull-timeManager$208.5K – $284K a yearEngineeringRadiant is seeking an Engineering Manager, HIL, to lead the electrical engineering team responsible for test infrastructure and system integration for Kaleidos, Radiant's commercial microreactor unit targeted for deployment in 2028. You will manage a team of electrical…
Environmental, Health & Safety (EHS) Manager
7 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeSenior$123K – $173.3K a yearHealthcareWe are looking for an Environmental, Health & Safety (EHS) Manager to serve as the company EHS authority supporting Radiant's multi-site manufacturing and operations in a lean, fast-moving environment. This role owns the strategy, development, implementation, and execution of…
Lead Reactor Operations Engineer
7 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeLead / staff$161.3K – $223.7K a yearEngineeringLead, mentor, and grow a team of Reactor Operations Engineers, setting technical priorities aligned with test, commissioning, and operational milestones.; Qualify as an operator to gain firsthand experience and ensure the team's work aligns with real-world execution.; Establish…
Technical Program Manager
7 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeSenior$133.5K – $218.9K a yearOperationsRadiant is building a first-of-its-kind reactor, and delivering it to some of the most demanding customers in the world.
Senior System Administrator
8 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeSenior$133.5K – $190.1K a yearITRadiant is seeking a Senior Systems Administrator to own the systems that keep the company running day-to-day within Microsoft 365 GCC High. You'll own the tenant, build our identity and access automation from the ground up in an Entra-native environment with no on-prem Active…
Principal Nuclear Engineer
8 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeLead / staff$195.7K – $262.5K a yearEngineeringRadiant is seeking a Principal Nuclear Engineer to lead the interdisciplinary nuclear engineering work supporting Kaleidos. This role combines people leadership with hands-on technical ownership across core physics, neutron and radiation transport, shielding, activation and…
Lead Nuclear Engineer
8 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeLead / staff$161.3K – $223.7K a yearEngineeringRadiant is seeking a Lead Nuclear Engineer to provide technical and people leadership within the nuclear design and analysis organization supporting Kaleidos. You will lead an interdisciplinary team working across core physics, neutron and radiation transport, shielding,…
Direct Procurement Manager
8 weeks agoRadiant Industries · El Segundo, California, United States
On-siteFull-timeMid level$115K – $168K a yearFinanceRadiant is seeking a proactive and strategic Direct Procurement Manager to lead the sourcing, negotiation, and acquisition of components, materials, and services essential for our innovative micro-reactor systems. This role is pivotal in establishing and maintaining a…
Updated 07 Nov 2026 10:21 UTC from the OptiTalent job library.