Control Rod Engineer (CRDM & Reactivity Control Systems Engineer)

About EURELITE EURELITE is developing next-generation Advanced Modular Reactor (AMR) technologies to support a cleaner, safer, and more resilient energy future. Location & Working Arrangement EURELITE is currently building its global engineering presence. The company’s Paris offic e is expected to open in 2027. Until then, international candidates joining for on-site positions will initially work as part of our Beijing-based China engineering team during the first year. Position Overview We are seeking a Control Rod Engineer (Reactivity Control Systems Engineer) to join our reactor development team and contribute to the design, analysis, and integration of advanced reactor reactivity control systems. This role provides an exciting opportunity to work at the forefront of Advanced Modular Reactor (AMR) technology, focusing on Control Rod Drive Mechanism (CRDM) development, neutron absorber systems, precision actuation, dynamic modeling, and reactor safety system integration. The successful candidate will apply expertise in mechanical design, mechatronics, control systems, nuclear reactor engineering, and high-fidelity simulation methods to develop reliable and safety-critical reactor shutdown and reactivity control technologies. You will collaborate closely with reactor physics, instrumentation & control (I&C), reactor vessel, materials, thermal-hydraulics, and safety analysis teams to support integrated reactor design and qualification. Key Responsibilities Control Rod & CRDM Design Design and optimize Control Rod Drive Mechanisms (CRDMs), reactor internals, and neutron absorber assemblies. Perform engineering analysis of control rod structures, absorber materials, and actuation mechanisms under high-temperature and high-radiation reactor environments. Support the development of reactivity control and reactor shutdown systems for advanced nuclear reactors. Kinematic & Dynamic Modeling Develop high-fidelity kinematic and dynamic models for control rod motion, including: Control rod insertion and withdrawal behavior Scram (rapid shutdown) dynamics Stepping and positioning accuracy Transient response analysis Perform simulation and optimization using engineering tools such as MATLAB/Simulink or equivalent modeling platforms. Analyze: Drop time performance Motion accuracy Mechanical wear and lifecycle reliability System Integration & Engineering Interface Management Define and manage mechanical, electrical, and thermal interface requirements between: Control Rod Drive Mechanism (CRDM) Reactor pressure vessel head Reactor Protection System (RPS) Reactor core and fuel assembly systems Ensure compatibility between reactivity control hardware and: Core physics requirements Fuel assembly boundaries Reactor safety functions Engineering Documentation & Testing Prepare technical design packages, engineering specifications, manufacturing documentation, and safety analysis materials. Develop and execute: Component qualification test plans Factory Acceptance Testing (FAT) Site Acceptance Testing (SAT) Support design verification, testing, and performance validation of reactivity control components. Qualifications & Requirements Education Bachelor’s degree or above in: Nuclear Engineering Mechanical Engineering Mechatronics Engineering Electrical Engineering Control Engineering Related technical disciplines Technical Skills Strong understanding of reactor reactivity control systems, control rod mechanisms, and nuclear safety-related components. Experience with mechanical system design, kinematic modeling, and dynamic simulation. Proficiency in MATLAB/Simulink or equivalent engineering simulation tools. Knowledge of: Electromagnetic actuators Stepper motors Precision servo systems Motion control technologies Understanding of nuclear reactor systems integration, safety systems, and component qualification processes is highly desirable. Professional Competencies Strong analytical capability and rigorous engineering problem-solving skills. Ability to analyze complex multi-disciplinary engineering systems. Strong collaboration skills across: Nuclear engineering teams Mechanical engineering teams I&C and control system teams Materials and testing teams Good technical communication, engineering documentation, and design review skills. Preferred Qualifications Candidates with the following experience will be highly valued: Experience in Control Rod Drive Mechanism (CRDM) design or reactor shutdown system development. Experience with nuclear safety-related mechanical systems or reactor internals design. Experience in Advanced Modular Reactor (AMR), Small Modular Reactor (SMR), or Generation IV reactor technologies. Experience in: Mechatronic system development Precision actuator design Servo control systems Dynamic simulation and transient analysis Experience with hardware prototyping, component testing, and engineering validation programs. Why Join EURELITE? At EURELITE, you will have the opportunity to: Work on cutting-edge Generation IV Advanced Modular Reactor technology Contribute directly to the future of clean and reliable energy Collaborate with international nuclear experts and engineering teams Apply advanced simulation and AI-driven approaches to nuclear innovation Grow with a pioneering technology company shaping the next generation of energy systems Apply Now If you are passionate about nuclear innovation and want to contribute to the future of sustainable energy, we welcome your application.