Jobs at Antares

The Manufacturing Engineer will develop manufacturing processes for nuclear reactor sub-systems, focusing on parts manufacturability, process qualifications, and collaboration across teams for design improvements.

Design, implement, test, and validate firmware for microcontroller and embedded platforms that interface with sensors, actuators, DAQs, and communication buses. Lead hardware bring-up, board-level debugging, fault handling, telemetry, and HIL testing while collaborating with electrical, controls, safety, and test teams to ensure safety, reliability, and regulatory compliance.

The R&D Machinist I will operate CNC mills and lathes, troubleshoot machinery, and provide feedback to engineering while working on high-tech materials.

The Senior Build Quality Engineer develops and implements quality processes, ensures industry standards adherence, and drives quality assurance within the supply chain.

Serve as a senior HR business partner advising leaders and employees on people operations, employee relations, talent planning, performance, organizational design, compliance, and change management. Build scalable HR policies and processes, lead lifecycle processes (promotions, leaves, offboarding), enable manager coaching and leadership development, and leverage people analytics to inform workforce decisions. Partner cross-functionally with Recruiting, People Ops, Legal, Finance, and IT.

Build and scale the accounting function: own month-end/quarter/annual close, ensure GAAP-compliant reporting, lead technical accounting (revenue, stock comp, leases), implement controls and ERPs, support audits/tax, develop manufacturing and government contract accounting, and partner across Finance, Engineering, and Operations.

Serve as the first in-house attorney building Antares' legal and compliance foundation. Advise leadership across contracts, government-funded programs, export controls (ITAR/EAR), corporate governance, IP, and risk. Draft and negotiate commercial agreements, create scalable contract templates and playbooks, manage external counsel, and develop export controls and compliance programs. Provide day-to-day business-oriented legal support to enable rapid execution while ensuring regulatory compliance.

Antares is hiring engineers passionate about clean energy. Roles involve design, testing, software development, and operations. A degree in engineering or physics is required. Preferred skills include project management and industry experience.

As a Test Engineer II, you'll design test infrastructure, develop test plans, collaborate with teams, ensure precision, and lead testing processes for microreactors.

As Supply Chain Manager, define strategic roadmaps, onboard suppliers, enhance supply chains, and coordinate with engineering for design compliance, logistics, and performance metrics while supporting prototyping and production.

The Supply Chain Engineer will define and execute the strategic roadmap for supplier development, manage supply chains for prototyping and production, and collaborate with various teams to ensure product manufacturability and compliance.

As a Mission Engineer, you'll lead microreactor mission programs, managing project costs and schedules while developing technical solutions to meet stakeholder needs.

Lead design and development of mechanical systems for the Cover Gas System, requiring expertise in fluid systems and cross-discipline collaboration.

Lead and develop teams in manufacturing engineering, oversee process development, facilities planning, and workforce capacity to achieve production goals.

Design and build R&D software and lab infrastructure: hardware/software interfaces, DAQ and test automation, data acquisition/processing/visualization, internal tools for experiment setup and reporting, support V&V and debug instrumentation, networking, and HIL issues, and maintain documentation and data traceability.

Design, model, and analyze heat pipe systems for high-temperature and nuclear applications; develop manufacturing methods, test articles, procedures; define operating limits, investigate failures, and coordinate cross-functional and external stakeholders to deliver qualified hardware.

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.

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

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.

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.