Jobs at Antares

Own turbomachinery hardware for nuclear reactors from concept through production. Lead design, analysis, manufacturing, testing, qualification, supplier coordination, requirements translation, verification planning, risk reduction, and technical issue resolution. Coordinate cross-functional engineering disciplines, investigate manufacturing and test issues, improve reliability and manufacturability, and communicate technical status to leadership.

Design, test, and integrate instrumentation, control, and power distribution systems for advanced nuclear microreactors. Responsibilities include developing schematics and wiring diagrams, reviewing electrical hardware designs, participating in technical design reviews and hazard analyses, supporting bench, HIL/HITL, and integration testing, and collaborating with systems, mechanical, software, licensing, and test teams. The role also contributes to safety-critical and regulatory documentation for DOE and NRC licensing.

Set up, operate, and troubleshoot multi-axis CNC mills and live-tooling lathes for R&D hardware and test fixtures. Monitor and replace cutting tools, deburr parts, document processes, and provide engineering feedback to improve manufacturability. Work with graphite, stainless steel, and high-temperature alloys while supporting dynamic schedules and critical development milestones.

Design, develop, test, and validate mechanical reactor reactivity-control systems and precision actuation mechanisms. Responsibilities include defining requirements and architecture, performing mechanism trade studies and FMEA, designing components for high-temperature and radiation environments, conducting design-for-manufacturability assessments, developing verification plans, and collaborating with multidisciplinary engineering teams and vendors.

Lead the design, development, testing, and validation of mechanical reactor reactivity-control systems. Design precision mechanisms, actuation solutions, linkages, interfaces, and instrumentation for high-temperature, high-stress, and radiation environments. Define requirements, architectures, and verification plans; conduct FMEA, DFM assessments, trade studies, vendor evaluations, and cross-functional collaboration across thermal, structural, neutronics, controls, and simulation teams.

Lead customer-facing microreactor programs across commercial, defense, and space missions. Own cost, schedule, quality, contractual compliance, requirements management, technical roadmaps, system architecture, interfaces, and milestone execution. Support DoD and DOE proposal development, contract acquisition, mission analysis, deployment logistics, facility integration, commissioning, and decommissioning. Bridge systems engineering, business development, customer needs, and cross-disciplinary engineering teams while making technical decisions aligned with commercial outcomes.

Manage customer-facing commercial, defense, and space microreactor programs, owning cost, schedules, quality, contractual compliance, requirements, and milestone delivery. Coordinate multidisciplinary engineering teams, translate customer feedback into design inputs, support DoD and DOE proposals, analyze mission use cases, develop technical roadmaps, and define system architectures and interfaces. The role bridges systems engineering, business development, government contracting, and operational deployment planning, including logistics, facility interfaces, transportation, commissioning, and decommissioning.

Own and mature fabrication processes for critical reactor hardware from development through qualified production. Develop welding, CNC machining, metal forming, additive manufacturing, brazing, and diffusion bonding methods; lead DFM reviews, process qualifications, documentation, root-cause investigations, and corrective actions. Collaborate with design, materials, quality, suppliers, machinists, welders, and technicians to improve manufacturability and transition prototype hardware into repeatable production. Mentor engineering and technical staff.

Design and integrate Power Conversion System hardware, including pressure boundaries, piping, supports, rotating machinery interfaces, high-temperature components, and modular plant layouts. Own pressure budgets, thermal growth, leak-tightness, maintainability, and mechanical interfaces. Develop production-intent models and drawings, support fabrication, assembly, test rig design, instrumentation, commissioning, and troubleshooting, and use test data to improve component performance and life.

Design and integrate Power Conversion System hardware for advanced nuclear microreactors, including pressure boundaries, piping, supports, rotating machinery interfaces, thermal-growth accommodations, and high-temperature components. Own mechanical arrangement and pressure budgets, produce fabrication-ready designs, support testing and instrumentation, and use test data to improve performance and component life. Collaborate across mechanical, electrical, safety, and nuclear teams while supporting manufacturing, assembly, commissioning, and troubleshooting.

Design, analyze, build, test, and improve turbomachinery components for nuclear reactors across the full product lifecycle. Responsibilities include turbomachinery analysis, engineering documentation, manufacturing and qualification support, root-cause investigations, corrective actions, design reviews, and tradeoffs involving performance, cost, manufacturability, and schedule. The role collaborates closely with manufacturing, test, and quality engineers and may lead cross-disciplinary technical projects.

The Senior Manufacturing Engineer will develop manufacturing processes, ensure manufacturability, oversee production from prototype to serial production, and improve efficiencies in nuclear reactor assembly.

Design, develop, and test electrical instrumentation, control, and power distribution systems for microreactors. Create schematics, wiring diagrams, and interface definitions; support hazard analysis, HIL/HITL and bench testing; participate in design reviews and prepare I&C documentation for DOE/NRC licensing. Collaborate cross-functionally to ensure safety, performance, and regulatory compliance.

Own thermal management and mechanical integration for a high-temperature nuclear power conversion system. Responsibilities include thermal budgeting, heat rejection and cold-sink architecture, recuperator sizing, insulation and instrumentation design, thermal interface management, transient analysis, testing, model correlation, component life assessment, and inspection and maintenance planning. Collaborate across mechanical, electrical, safety, and nuclear engineering teams to develop and commission first-of-a-kind hardware.

Own thermal management for a nuclear microreactor Power Conversion System, including heat budgets, heat rejection, cold-sink architecture, recuperator integration, insulation, thermal interfaces, instrumentation, and transient requirements. Perform thermal and thermo-mechanical analysis, correlate models with test data, support hardware testing and commissioning, and develop inspection and maintenance plans for life-limited components. Collaborate across mechanical, electrical, safety, nuclear, materials, and structural engineering teams.

Lead administration and evolution of the Siemens NX CAD ecosystem: develop standards, automation, Check‑Mate rules, manage large assemblies, reusable libraries, produce manufacturing-ready drawings, enforce best practices, support PDM workflows, and partner with engineers on mechanical parts and complex assemblies for a nuclear microreactor.

Provide hands-on IT support and systems administration across endpoints, identity, network infrastructure, collaboration tools, cloud services, and internal apps. Maintain security, compliance, imaging/patching, monitoring, and documentation to support engineering, manufacturing, and business teams in a regulated, government-facing environment.

Lead design and analysis of the Reactor Cavity Cooling System (RCCS): perform thermal-fluid, piping, and structural sizing and optimization; define system architecture and limits; produce design documentation and test plans; coordinate cross-functionally; support fabrication, supplier selection, and testing; serve as Responsible Engineer and present technical work through design, licensing, and deployment.

Designs, analyzes, tests, and qualifies safety-significant reactor structures, including core restraints, control drum supports, and heat exchanger vessel supports. Performs thermal, mechanical, and structural analyses; defines architectures, margins, and operating limits; creates engineering documentation; leads testing and validation; and collaborates with manufacturing, licensing, procurement, and suppliers through hardware deployment.

Develop and maintain real-time embedded firmware for microcontrollers and instrumentation used in microreactor control. Implement device drivers and communication protocols, support hardware bring-up and debugging, create test plans and verification, collaborate across electrical, controls, systems, and safety teams, and implement fault detection and safe-state logic for qualification and deployment.