Fall 2026 AI Software Engineering Intern

About the company

Nuclearn builds an AI platform that automates critical operational workflows for nuclear power plants.

About this role

<p>&nbsp;</p> <p class="x_PDq2pG_selectionAnchorContainer"><strong data-olk-copy-source="MessageBody">The Nuclear Company</strong>&nbsp;is the fastest growing AI tech-startup in the nuclear and energy space, pioneering a fleet-scale approach to building the next generation of nuclear reactors. Through our design-once, build-many model, we're accelerating the deployment of safe, reliable, and affordable nuclear energy.</p> <p><strong>We operate with an AI-first mindset.</strong>&nbsp;Every employee is expected to leverage AI, technology, and the Nuclear Operating System (NOS) as integral components of their role to improve the quality, speed, and impact of their work. We expect every team member to continuously identify opportunities to automate workflows, enhance decision-making, improve processes, and contribute to the ongoing evolution of NOS as a strategic operating capability that enables The Nuclear Company to scale with excellence.</p> <p><strong>We hire people who are driven by purpose, thrive in ambiguity, and are energized by building what has never been built before.</strong>&nbsp;Our team combines intellectual curiosity with high agency, embraces candid feedback and continuous learning, and holds themselves and others to exceptional standards. Our values—<strong>Trust, Responsibility, Unity, Scrappiness, and Tenacity</strong>—guide how we hire, collaborate, and make decisions every day. They are not words on a wall; they are the standard by which we operate. Trust is the foundation of our safety culture, fostering intellectual honesty, accountability, and open communication, while our values challenge every team member to execute with urgency, humility, resilience, and an unwavering commitment to our mission.</p> <p><strong><span class="TextRun SCXW174644119 BCX0" lang="EN-US" data-contrast="auto"><span class="NormalTextRun SCXW174644119 BCX0">About the role</span></span></strong></p> <p><span data-contrast="auto">The United States is building nuclear power again, and The Nuclear Company is writing the software that makes it possible. NOS, the Nuclear Operating System, runs the regulatory, supply chain, cost, schedule, and field work behind real reactor construction. The work matters for national security, energy independence, and&nbsp;the climate.</span><span data-ccp-props="{"201341983":0,"335559739":60,"335559740":264}">&nbsp;</span></p> <p><span data-contrast="auto">You will build software that people use to build power plants. As a AI Software Engineering Intern, you take real scope on NOS across one of our engineering squads (product, platform, or data), and increasingly that means AI-powered software: LLM- and agent-backed features, retrieval, and tool-calling in the tools our teams use. You work next to full-time engineers and nuclear experts, ship real features to production, and see your work put to use by the teams building plants.</span><span data-ccp-props="{"201341983":0,"335559739":60,"335559740":264}">&nbsp;</span></p> <p><span data-contrast="auto">This is a six-month co-op available in the&nbsp;Fall 2026&nbsp;(August to December) cycle, aligned to the academic calendar. Base location is Washington DC, on-site five days a week, with full housing and relocation for co-ops outside the DC metro area.</span><span data-ccp-props="{"201341983":0,"335559740":264}">&nbsp;</span></p> <p><strong><span class="EOP SCXW174644119 BCX0" data-ccp-props="{"134245417":false,"201341983":0,"335559740":240}">Responsibilities</span></strong></p> <ul> <li><span data-contrast="auto">Build new features and full modules within NOS: regulatory automation, cost and schedule, supply chain, and the commercial portal.</span><span data-ccp-props="{"201341983":0,"335559739":40,"335559740":264}">&nbsp;</span></li> <li><span data-contrast="auto">Build AI-powered software: LLM- and agent-backed features, retrieval-augmented generation, and tool-calling against internal systems, a growing part of the platform.</span><span data-ccp-props="{"201341983":0,"335559739":40,"335559740":264}">&nbsp;</span></li> <li><span data-contrast="auto">Develop data integrations across Palantir Foundry, AWS GovCloud,&nbsp;and more.&nbsp;</span><span data-ccp-props="{"201341983":0,"335559739":40,"335559740":264}">&nbsp;</span></li> <li><span data-contrast="auto">Convert build-a-thon prototypes into production-grade features and build field deployment tooling for the teams working in the field.</span><span data-ccp-props="{"201341983":0,"335559739":40,"335559740":264}">&nbsp;</span></li> <li><span data-contrast="auto">Build the automated testing and compliance infrastructure that keeps NOS audit-ready;&nbsp;triage issues and root-cause failures</span></li> </ul> <p><strong><span data-ccp-props="{"134233117":false,"134233118":false,"134245417":false,"201341983":0,"335559738":0,"335559739":0,"335559740":240}">Required Experience</span></strong><span data-ccp-props="{"201341983":0,"335559739":40,"335559740":264}">&nbsp;</span></p> <ul> <li><span data-contrast="auto">Currently enrolled in a BS in Computer Science, Software Engineering, Computer Engineering, Mathematics, Physics, or a related technical field. Available for a full six-month term and returning to school afterward.</span><span data-ccp-props="{"201341983":0,"335559739":40,"335559740":264}">&nbsp;</span></li> <li><span data-contrast="auto">Strong programming fundamentals in at least one modern language (Python, TypeScript, Java, Go, Rust, or C++).</span><span data-ccp-props="{"201341983":0,"335559739":40,"335559740":264}">&nbsp;</span></li> <li><span data-contrast="auto">A track record&nbsp;of shipping working software (course projects, personal projects, or prior internships or co-ops).</span><span data-ccp-props="{"201341983":0,"335559739":40,"335559740":264}">&nbsp;</span></li> <li><span data-contrast="auto">This position requires access to information and technology subject to U.S. export controls (including DOE 10 CFR Part 810 and NRC requirements). U.S. P