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Radiant is seeking a highly motivated Senior Equipment Engineer who will be working closely with design engineers and the manufacturing team to develop and innovate custom equipment to build and assemble our microreactor system. Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites.

Radiant Industries

Senior Equipment Engineer

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Prior experience working as an operator in fast-paced test environments (e.g., rocket engine testing, turbopump testing, component level testing), with familiarity in safety protocols, and high-reliability operations, high pressure gases, safety engineering (FMECAs, Keep-out Zone). You will collaborate with a multidisciplinary team to translate complex hardware and software designs into clear, executable test operations, with encompassing test procedures that will efficiently and safely execute test, commissioning, and operational activities.

Test Engineer, Mechanical/Fluids

Radiant is seeking a Stress Engineer to own and execute structural loads, vibration, and dynamic analyses for complex mechanical systems associated for Kaleidos, the world's first portable microreactor and supporting hardware. This role requires a hands-on engineer who is comfortable working in ambiguous, fast-paced environments and collaborating closely with structures, mechanical design, thermal, nuclear, and test teams.

Senior Stress Engineer

Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites. Perform complex thermal and fluids analysis to drive design decisions, verify system performance, and ensure structural integrity using first-principle hand calculations and finite element tools.

Mechanical Engineer, Fluid Systems

Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites. This may include nuclear engineering areas such as radiation shielding, criticality safety, accident dose consequence, reactor physics modeling and design, transient analysis, and radiation detection.

Nuclear Engineer

Senior Test Engineer, Mechanical/Fluids

About the Role Radiant is seeking a highly motivated Materials Engineer to own development, testing, and qualification of in-core moderator and reflector materials and related manufacturing processes used for the Kaleidos 1MW nuclear microreactor. Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites.

Materials Engineer, Moderator Materials

Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites. Total compensation and level are determined through a rigorous evaluation of interview performance, experience, education, and qualifications, and are designed to support continued growth as scope, responsibility, and impact expand at Radiant.

Senior Power Electronics Engineer

Radiant is seeking a Senior Electrical Engineer focused on PCB development, mixed-signal design, high-speed interfaces, power distribution, and signal integrity, supporting the data acquisition, signal conditioning, data sampling, and reactor control operations behind Kaleidos, our commercial microreactor targeted for customer deployment in 2028. Design boards that may include high-speed communication, sensor interfaces, data acquisition paths, and communication buses, focusing on build quality, signal integrity, power integrity, grounding, and EMI/EMC mitigation to operate seamlessly in a nuclear reactor.

Senior Electrical Engineer, PCB

Perform detailed thermomechanical analysis (static strength, durability/fatigue) and kinematic analysis to determine structural integrity and performance margins using both hand calculations and finite element tools. Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites.

Senior Mechanisms Engineer

Radiant is seeking a highly motivated senior automation and controls engineer who will be working close with design and manufacturing engineers to design, build, and implement automated production and test equipment to support mass production and refueling of our microreactor technology. Design, develop, and manage automation projects - this includes equipment ideation, machine commissioning, proof of rate capability, quality and reliability studies, and eventual hand-off to operational teams.

Senior Automation and Controls Engineer

Experience designing, analyzing, and working safely with industrial power systems including 120 VAC, 208 VAC, and 480 VAC equipment, including applicable electrical safety practices. Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites.

Senior Electrical Engineer, Controls

Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites. Perform complex thermal and fluids analysis to drive design decisions, verify system performance, and ensure structural integrity using first-principle hand calculations and finite element tools. .

Staff Fluid Systems Engineer

Perform detailed structural analysis (reinforced and precast concrete design, static strength, durability) and dynamic analysis (seismic qualification) to determine structural integrity (margins of safety) using both hand calculations and finite element tools. Deployed locally without a decade-long build or permitting fight, Kaleidos provides independent power for critical infrastructure like military bases, data centers, hospitals, and remote sites.

Senior Structural Engineer, Concrete

Our autonomous edge sensing fleets, deep learning forecast models, and integrated customer decision engines will create the most precise weather intelligence on the planet—empowering industry, strengthening climate resilience, providing vital intelligence to American warfighters, and opening billion-dollar markets that don’t exist yet. By building a distributed network of sensors fused with breakthrough AI, Mantari transforms raw environmental signals into actionable intelligence so that the world’s most critical outcomes, from global trade and securing grids to defending nations, are guided not by uncertainty, but by foresight.

Mantari

Embedded HW/SW Engineer

You will own the modeling that determines how heat, coolant, and reactor core behavior interact under normal and accident conditions — work that directly informs core design, cooling systems, and safety case development for the first mass-produced nuclear reactor. We made energy a product that can be used for critical infrastructure like military bases, data centers, hospitals, and remote sites, as well as the commercial main street businesses that keep America running.

Senior Nuclear Thermal-Hydraulics Engineer

Contribute to requirements and architecture development, actively identifying integration and end-user pain-points to drive Design-for-Test (DFT), Design-for-Manufacturing (DFM), and Design-for-Use (DFU) best practices back into the left side of the Systems Engineering V. This role contributes to requirements definition at all levels, develops test plans, specifies test station hardware and software, and oversees the creation and transition of new test stations and procedures to manufacturing.

Epirus

Senior Systems Integration Engineer

Perform detailed thermomechanical analysis (static strength, durability/fatigue) and kinematic analysis to determine structural integrity and performance margins using both hand calculations and finite element tools. We made energy a product that can be used for critical infrastructure like military bases, data centers, hospitals, and remote sites, as well as the commercial main street businesses that keep America running.

Senior Mechanical Engineer, Mechanisms

The ideal candidate will have a strong background in developing and optimizing complex high-frequency IC layouts, with practical understanding of RF layout considerations such as device placement, matching, routing, shielding, isolation, passive structures, parasitic effects, and electromagnetic interactions. About the Role: We are seeking a highly skilled R&D Engineer with extensive hands-on experience in RFIC, MMIC, RF module, or analog/mixed-signal layout, combined with an interest in advancing layout automation and design productivity.

Keysight Technologies Inc

Layout Automation Engineer

Our specialized experience includes design for data centers, healthcare, science and technology, high-rise buildings, clean energy, education, and other building types as well as structural and building sciences, infrastructure asset management, advanced robotics, and more. Our technical expertise is paired with an exceptional team of business development, human resources, finance and accounting, information technology, and marketing professionals, all of whom play a key role in bringing our commitments to life every day.

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