Antares
Mechanical Design Engineer II - Reactivity Controls
About this role
Lead the mechanical design and development of reactor control mechanisms for advanced nuclear microreactors at an early-stage venture-backed company. This role requires designing precision actuation systems, conducting rigorous testing and validation, and collaborating across multidisciplinary teams in a fast-paced environment.
What you'll do
- Design, build, and test mechanical control mechanisms and assemblies for reactor reactivity management
- Develop custom actuation solutions including mechanisms, linkages, interfaces, and instrumentation
- Define design criteria, requirements, system architecture, and verification/validation test plans
- Collaborate with thermal, structural, neutronics, controls, and simulation teams on cross-functional architecture
- Engineer components for high-temperature, high-stress, and radiation environments using advanced materials
- Perform design-for-manufacturability assessments and execute performance, cost, schedule, and risk tradeoffs
What they're looking for
- Full-cycle mechanical design (CAD, analysis, build, test)
- Kinematic synthesis and mechanism design
- Pneumatic and hydraulic actuation systems
- Mechatronics and instrumentation
- FMEA and failure mode analysis (structural, fatigue, stability)
- CAD tools (NX, ANSYS, Femap)
- Engineering analysis and simulation
- Python and MATLAB scripting
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Antares
Antares develops advanced nuclear microreactors designed for diverse applications including terrestrial, underwater, and space use, with a focus on inherently safe and mass-producible designs. The company is hiring electrical engineers, nuclear engineers, thermo-mechanical designers, software engineers, and manufacturing engineers to advance reactor systems from design and analysis through testing, qualification, and production.
View all jobs at AntaresLikely interview questions
- Describe a complex precision control mechanism you designed from concept through test—what were the key challenges and how did you address them?
- How would you approach designing an actuation system for an extreme environment with multiple competing constraints like high temperature, radiation, and high stress?