Sr. Full Stack Engineer (React, Python)

Phoenix AZ (In Office)
Posted 1 month ago

Who we are is a startup technology company delivering solutions to the nuclear and utility industries. We solve meaningful problems using advanced AI and high-quality software, deployed easily and cost-effectively.

Nuclearn’s primary product is a web platform that tightly integrates workflow automations, machine learning model deployment, dataset management, and analysis to solve specific problems for our customers in both the nuclear and broader utility industries. The platform is currently installed and in use at over 33 nuclear reactors in North America, and we are actively working to expand our reach to every nuclear utility in the US and abroad, as well as to other utility sectors.

Position Overview

At Nuclearn, we are seeking a highly motivated and talented Senior Full Stack Engineer with at least 7 years of experience. In this role, you will play a crucial part in shaping the future of our company as we expand our product offering and customer base. If you have a passion for building cutting-edge solutions, thrive in a fast-paced environment, and are eager to make a significant impact in the nuclear and utility industries, this could be the perfect opportunity for you.

You must be a US citizen or permanent resident (e.g. green card holder) to be eligible for this position due to DOE Export Compliance requirements.

What you’ll be doing

As a Senior Full Stack Engineer at Nuclearn, you will:

  • Collaborate closely with our team to build and maintain our platform
  • Develop and optimize high-quality, scalable code for both frontend (React) and backend (FastAPI)
  • Implement and maintain containerization solutions using Docker/Podman and Kubernetes
  • Contribute to architectural decisions and the overall design of our platform
  • Continuously improve the performance, scalability, and security of our platform
  • Participate in code reviews, brainstorming sessions, and knowledge sharing with the team
  • Stay up-to-date with the latest industry trends, technologies, and best practices to ensure our platform remains at the forefront of innovation


  • Minimum of 7 years of relevant experience
  • US Citizen or Green Card holder
  • Technical Skills

Frontend: JavaScript, React.js, HTML/CSS

Backend: Python, FastAPI/Gunicorn, Node.js, Redis, RabbitMQ, Celery

Database: PostgreSQL, SQLite

DevOps: Docker/Podman, Kubernetes

Testing: Cypress, PyTest

Version Control: Git/GitHub

  • A positive attitude, strong work ethic, and eagerness to learn and grow within the company
  • Ability to contribute independently within 6 weeks
  • Strong problem-solving skills, attention to detail, and an ability to think critically and creatively
  • Excellent communication and teamwork skills, with the ability to work both independently and collaboratively
  • At least a Bachelor’s degree in Computer Science or a related field, or equivalent practical experience

Bonus qualifications (not required, but a plus)

  • Experience with machine learning and AI techniques
  • Prior experience working in a startup environment
  • Knowledge of the nuclear or utility industries


  • Full-time
  • Salaried position
  • Mon-Fri hybrid work environment (expectation is at least 80% in office)

What you’ll love

  • Competitive pay, bonus structure and equity
  • Opportunity to make a huge impact in a growing, self-funded company
  • Unique opportunity to work for a company training and applying LLMs and other state of the art AI techniques
  • Unlimited vacation
  • Health Insurance


If you’re excited about the opportunity to make a real difference in a rapidly growing company and have the skills and experience we’re looking for, we’d love to hear from you. Apply today to join our dynamic team and help us revolutionize the nuclear and utility industries with innovative AI solutions.

Job Features

Job CategoryDeveloper

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