Software Engineer Internship
About The Position
Nuclearn.ai builds AI-powered software for the nuclear and utility industries—tools that keep critical infrastructure reliable, efficient, and safe. Our software integrates AI-driven workflow, documentation, and research automation, and is already used at 60+ nuclear reactors across North America. You'll ship production code operators and engineers rely on every day. We're growing quickly, expanding our team and our Phoenix HQ. The work is consequential: what you build helps real plants run safer and smarter. Eligibility: U.S. citizenship or permanent residency (green card) is required due to DOE export compliance.
Requirements
- Pursuing a degree in Computer Science, Software Engineering, or a related field or you’ve built enough on your own that a transcript doesn’t tell the whole story
- Proficiency in Python and/or JavaScript/TypeScript — you’ve written real code, not just homework assignments, and you’re comfortable picking up new frameworks quickly
- Strong independent problem-solving instincts — when you hit a wall, your first move is to dig in, read the logs, and trace the root cause yourself before escalating
- A bias toward durable solutions over quick patches — you don’t just silence the alert, you ask why it fired and how to make sure it doesn’t happen again
- You thrive in fast-paced environments — ambiguity doesn’t paralyze you, it energizes you. You’d rather ship and iterate than wait for a perfect spec
- Comfortable using AI tools — you leverage AI to move faster, but you understand the underlying software architecture principles well enough to know when the output is right and when it’s wrong
Nice To Haves
- Experience building APIs with Python and FastAPI — you’ve stood up endpoints, handled validation, and worked with async patterns before
- Familiarity with Docker and containerized environments — you understand images, containers, and can debug a failing build without panic
- Experience integrating agentic AI models into a product — you’ve gone beyond prompt-and-response to orchestrate models that complete complex, multi-step tasks autonomously
Responsibilities
- Triage and resolve production bugs surfaced through Sentry — investigate root causes, write fixes, and ship patches across the stack
- Build and ship features on the product roadmap alongside senior engineers, contributing to major releases that reach 60+ nuclear reactors
- Write production code across the full stack — React on the frontend, FastAPI on the backend
- Learn modern delivery practices including CI/CD pipelines, code review workflows, and how to ship reliable software fast in a regulated industry
- Independently triage and fix incoming Sentry bugs — diagnose issues, scope the fix, and ship it to production
- Own a feature end-to-end — from understanding the requirement, to writing the backend API in FastAPI and the frontend UI in React, through code review and deployment
- Participate in design discussions and code reviews — collaborate with engineers on architectural decisions, surface trade-offs, and contribute best-practice recommendations to the team’s standards
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What This Job Offers
Job Type
Part-time
Career Level
Intern
Education Level
No Education Listed
