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Backend Developer Intern Jobs in Mesa, AZ (NOW HIRING)

You'll ship production code operators and engineers rely on every day. We're growing quickly ... Write production code across the full stack - React on the frontend, FastAPI on the backend * Learn ...

You'll ship production code operators and engineers rely on every day. We're growing quickly ... Write production code across the full stack - React on the frontend, FastAPI on the backend * Learn ...

You'll ship production code operators and engineers rely on every day. We're growing quickly ... Write production code across the full stack React on the frontend, FastAPI on the backend * Learn ...

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Backend Developer Intern information

See Mesa, AZ salary details

$11

$57

$83

How much do backend developer intern jobs pay per hour?

As of May 28, 2026, the average hourly pay for backend developer intern in Mesa, AZ is $57.28, according to ZipRecruiter salary data. Most workers in this role earn between $46.97 and $67.74 per hour, depending on experience, location, and employer.

What is a Backend Developer Intern job?

A Backend Developer Intern is an entry-level role where you assist in building and maintaining the server-side logic of web applications. You will work with databases, APIs, and backend frameworks to ensure efficient data processing and system functionality. Typical tasks include writing and testing code, debugging issues, and collaborating with frontend developers to integrate services. This internship helps you gain hands-on experience in software development and understand industry best practices.

What are the key skills and qualifications needed to thrive in the Backend Developer Intern position, and why are they important?

To thrive as a Backend Developer Intern, you need a solid understanding of programming languages like Java, Python, or Node.js, as well as basic knowledge of databases and data structures, typically gained through coursework or personal projects. Familiarity with version control systems (such as Git), RESTful APIs, and frameworks like Django or Express is commonly required. Strong problem-solving skills, effective communication, and the ability to work collaboratively stand out in this role. These competencies are crucial for efficiently contributing to backend development tasks, integrating with team members, and learning quickly in a fast-paced tech environment.

What types of projects or responsibilities can a Backend Developer Intern expect during their internship?

As a Backend Developer Intern, you can expect to work on tasks such as developing and maintaining server-side logic, building and integrating APIs, troubleshooting bugs, and collaborating with frontend teams to deliver seamless features. Interns often contribute to real production code under the guidance of senior developers and participate in code reviews, team meetings, and regular stand-ups. You'll gain hands-on experience with industry-standard tools and workflows while learning best practices for clean, efficient code. This immersive exposure helps you build a foundational skill set and prepares you for more advanced development roles in the future.
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Software Engineer Internship

Software Engineer Internship

Nuclearn

Phoenix, AZ

$25 - $35/hr

Full-time

Posted 11 days ago


Job description

Why Nuclearn.ai

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.

What You'll Do
  • 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
Examples of problems you might own in your first 90 days
  • 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
What Makes You a Great Fit
  • 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 Have (not Required)
  • 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
Impact You'll Have (near-term roadmap)
  • Strengthen platform reliability - your bug fixes and troubleshooting directly resolve real customer pain points, making the product more robust for operators at 60+ reactors
  • Ship features that customers actually use - you'll see the code you write go live and watch real users interact with it, not sit in a backlog
  • Improve reliability metrics across the platform - fewer Sentry alerts, faster resolution times, and more stable releases as a direct result of your work

Compensation & Benefits
  • Hourly: $25 - $35

Work Model & Schedule
  • Part-time to full time, hourly internship
  • In-office 4 days a week (Mon, Tue, Thu, Fri) at Phoenix HQ - the company is remote on Wednesdays, but interns work a 4-day in-office schedule to maximize hands-on collaboration and learning until demonstrated self-sufficiency

How We Hire (fast, respectful, practical)
  1. 20-min intro with the founder/hiring manager to trade context and assess mutual fit
  2. Practical work sample (60-90 min; a real task in our stack)
Employment Type: FULL_TIME