Reactor Software Engineer I/II

About the role

Antares is developing mass-producible microreactors for terrestrial, underwater, and space applications. We are looking for engineers to build the software infrastructure that manages reactor operations, telemetry, and hardware-in-the-loop testing environments. You will bridge the gap between physical hardware and digital control systems to ensure safe and predictable performance.

Key facts

What you'll do

• Architect software for data acquisition, command execution, state management, and fault response.
• Create unified interfaces that function across simulations, bench test stands, and full-scale reactor hardware.
• Define and implement telemetry pipelines, ensuring data is validated and actionable for operators.
• Collaborate with electrical, embedded, and safety teams to document interface requirements and communication schemas.
• Execute end-to-end feature development, including design, implementation, testing, and documentation.
• Perform root-cause analysis and debugging during hardware integration campaigns.

Requirements

• Bachelor degree in Computer Science, Software Engineering, Electrical Engineering, or a related technical field.
• Software Engineer I: 0-2 years of relevant experience.
• Software Engineer II: 2-5 years of relevant experience.
• Proficiency in Python 3, including typed code, structured data models, and testing.
• Experience developing software for hardware-integrated, embedded, or mission-critical systems.
• Familiarity with concurrent or asynchronous programming patterns such as asyncio, threads, or multiprocessing.
• Ability to design state machines, command flows, and clear system interfaces.
• Experience with Git-based collaborative workflows and technical documentation.

Nice to have

• Experience with messaging or networking protocols like MQTT, NATS, DDS, ZeroMQ, or gRPC.
• Proficiency in C, C++, or Rust.
• Background in building Hardware-in-the-Loop (HIL) or simulation environments.
• Familiarity with Linux, containerization, and modern Python tooling like pytest.
• Experience in aerospace, robotics, automotive, or nuclear industries.

Skills & tools

• Python 3
• Data acquisition (DAQ) systems
• Hardware-in-the-loop (HIL) testing
• State machine architecture
• Distributed systems
• Git

Practical notes

• This position is subject to U.S. Government export regulations (ITAR). Applicants must be U.S. citizens, lawful permanent residents, refugees, or asylees.
• Antares is an equal opportunity employer.