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As part of a small, passionate, and accomplished team of test engineers, you will help drive test operations to meet Radiant’s requirements in a fast-paced production environment. You will directly contribute to test operations by assisting with test planning and execution, risk
About the Role Radiant is seeking a talented Senior Manager, Power Systems, to build and lead the team that designs, models, and validates electrical power systems for our nuclear microreactor platform. You will manage a team of power systems and power electronics engineers, set
Radiant is seeking an CNC Programmer and Machinist who will contribute to the development of our microreactor unit. You’ll be a key contributor to Radiant, programming, setting up, and operating CNC machines to produce precision components that power our most critical systems. Yo
About the Role 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. You will be part of the early team
About the Role Radiant is seeking a Senior Manager of Embedded Engineering to lead the embedded software engineering team through the critical path to commercialization, planning and executing the embedded software architecture for I&C systems with a direct line to Kaleidos' 202
About the Role Radiant is seeking an Engineering Manager, Integration & Test, 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
About the Role We recently closed a oversubscribed $350M Series D at a $1.8B valuation, backed by Andreesen Horowitz, DCVC, Boost Ventures, Draper Associates, Chevron Tech Ventures, Founders Fund, IQT, LM Ventures and others. We’ve grown to north of 200 people this year and we ar
About the Role Radiant is seeking a highly motivated Senior Mechanical Engineer, Mechanisms 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 f
About the Role Radiant is seeking a Principal Electrical Engineer to lead the electrical system architecture and test infrastructure for Kaleidos, Radiant's commercial microreactor unit targeted for deployment in 2028. You will own end-to-end electrical integration, from early a
About the role We're looking for a Social & Content Manager to own Radiant's day-to-day content production across social media, presentations, and visual assets. You'll write and post social content for the company and executives, build slides and decks and graphics. This is a h
About the Role We're looking for a Media Relations Director to own Radiant's external media presence—from podcast bookings and journalist relationships to investor amplification and executive communications. This role is critical: despite Radiant having more substance, competitor
About the Role Radiant is seeking a Certification Engineer to develop, maintain, and govern engineering design standards, requirements, and verification methodologies for the mass production of nuclear reactors. This role bridges systems engineering, design, analysis, manufactur
About the Role This position goes beyond traditional systems engineering - you will also gain hands-on experience as a Reactor Operator (RO), directly influencing the development of operational software, procedures, and future reactor designs. Responsibilities & Duties: - Qua
About the Role This position goes beyond traditional systems engineering - you will also gain hands-on experience as a Reactor Operator (RO), directly influencing the development of operational software, procedures, and future reactor designs. Responsibilities & Duties: - Qua
About the Role Radiant is seeking a highly motivated Senior 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
We are seeking for a Build Engineer to help bring high-speed rotating hardware from design into reality. This is a hands-on role ideal for new graduates or early-career engineers who want to learn by building, assembling, and integrating complex turbomachinery systems. You will w
Radiant is seeking a bold, driven, and hands-on Senior Technical Recruiter to build and scale a world-class team in a high-growth, startup environment. You will own the full-cycle recruitment process—from intake and sourcing strategy to closing top-tier candidates—while serving a
About the Role Radiant is seeking a Senior Electrical Engineer to lead the design, build, and maintenance of Radiant's electrical test infrastructure for Kaleidos, Radiant's commercial microreactor unit targeted for deployment in 2028. You will take ownership of test infrastruct
About the Role Radiant is seeking a highly motivated Mechanical Engineer, Fluids Systems to help 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 conv
About The Role Radiant is seeking a highly engaging and effective leader for our regulatory and licensing team. The Director of Regulatory Affairs will oversee licensing engagement, strategy, process, and execution with the U.S. Nuclear Regulatory Commission (NRC). You will play