Spring 2027 Software Engineering Intern

The Nuclear Company•Washington, DC

22h•Onsite

About The Position

The Nuclear Company is a rapidly growing AI tech startup focused on the nuclear and energy sectors, aiming to revolutionize the next generation of nuclear reactors through a scalable, design-once, build-many approach. The company emphasizes an AI-first culture, expecting all employees to utilize AI, technology, and the Nuclear Operating System (NOS) to enhance their work. The company seeks individuals who are purpose-driven, comfortable with ambiguity, and excited by innovation. Core values include Trust, Responsibility, Unity, Scrappiness, and Tenacity, guiding all aspects of employment and operations. The role involves writing software critical for building power plants, specifically contributing to NOS, which manages regulatory, supply chain, cost, schedule, and field operations for reactor construction. This work has significant implications for national security, energy independence, and climate change mitigation. The internship is a six-month co-op available in Spring 2027 (January to June), based in Washington DC, requiring on-site presence five days a week. Housing and relocation assistance are provided for those outside the DC metro area.

Requirements

Currently enrolled in a BS program for Computer Science, Software Engineering, Computer Engineering, Mathematics, Physics, or a related technical field.
Availability for a full six-month term and commitment to returning to school afterward.
Proficiency in at least one modern programming language, such as Python, TypeScript, Java, Go, Rust, or C++.
Demonstrated experience in shipping working software through course projects, personal projects, or prior internships/co-ops.
Must be a U.S. Person (U.S. citizen or lawful permanent resident) due to access to information and technology subject to U.S. export controls.
Willingness and ability to work on-site in Washington DC, five days a week, for the entire six-month term.
No visa sponsorship is provided for these roles.

Nice To Haves

Experience building AI-powered features, including LLM APIs (OpenAI or Anthropic), retrieval-augmented generation, or agent and tool-calling.
Coursework or project experience with Palantir Foundry, AWS, or another enterprise cloud platform.
Familiarity with algorithms, data structures, cloud infrastructure, and modern front-end frameworks.
Interest in energy, national security, industrial software, or regulated industries.
Familiarity with nuclear engineering concepts (though not required).

Responsibilities

Build new features and full modules within NOS, covering areas like regulatory automation, cost and schedule management, supply chain, and the commercial portal.
Develop AI-powered software, including LLM- and agent-backed features, retrieval-augmented generation, and tool-calling against internal systems.
Create data integrations across platforms such as Palantir Foundry and AWS GovCloud.
Transform prototypes from build-a-thon events into production-grade features and develop field deployment tooling.
Construct automated testing and compliance infrastructure to ensure NOS is audit-ready, and handle issue triage and root-cause analysis for failures.