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App Developer Intern Jobs in Princeton, NJ (NOW HIRING)

Eulerity

Mobile iOS Developer Intern

New York, NY · On-site

$16 - $18/hr

Our iOS app is a critical surface for how clients interact with the platform - and we're looking ... Our engineers use Claude Code, agentic coding workflows, and prompt engineering as core parts of ...

Eulerity

Mobile iOS Developer Intern

New York, NY

$16 - $18/hr

Our iOS app is a critical surface for how clients interact with the platform - and we're looking ... Our engineers use Claude Code, agentic coding workflows, and prompt engineering as core parts of ...

Ramp

Software Engineer Internship, Android

New York, NY · On-site

$11K/mo

We are rapidly scaling our mobile app, and our ideal candidate will contribute to building the next ... We are looking for an Android intern for our 12 or 16-week Fall Program (August/September 2026 ...

Sleeper

User Research Intern

New York, NY · On-site

$20 - $32/hr

Monitor users' app engagement metrics using internal dashboards * Conduct benchmarking and ongoing ... Our team includes designers, engineers, product experts, and finance & operation focused on one ...

Outfront Media, Inc.

Lead AI Platform Engineer

New York, NY · On-site

$112K - $147K/yr

Comfort with Lambda, ECS, App Runner, RDS, and the IAM and networking surface that AI workloads ... an intern. For New York, New Jersey, and California, the salary range for this role is $175,000 ...

Outfront Media

Lead AI Platform Engineer

New York, NY · On-site

$112K - $147K/yr

Comfort with Lambda, ECS, App Runner, RDS, and the IAM and networking surface that AI workloads ... an intern. For New York, New Jersey, and California, the salary range for this role is $175,000 ...

Outfront Media

AI Automation Engineer

New York, NY · On-site

Mentor our intern. Both will make you better. What We're Looking For * 2-4 years building ... GitHub, a side project, a deployed app, a meaningful internship - something we can look at and say ...

CertiK

Security Research Internship

New York, NY · Remote

$3.0K - $8.0K/mo

We are working on a wide range of security research topics, including malware analysis, vulnerability detection, network anomaly detection, mobile app analysis, reverse engineering, and fraud ...

CertiK

Security Research Internship

New York, NY · On-site +1

$3.0K - $8.0K/mo

We are working on a wide range of security research topics, including malware analysis, vulnerability detection, network anomaly detection, mobile app analysis, reverse engineering, and fraud ...

All JobsApp Developer Intern JobsApp Developer Intern Jobs in Princeton, NJ

App Developer Intern information

See Princeton, NJ salary details

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How much do app developer intern jobs pay per hour?

As of Aug 6, 2026, the average hourly pay for app developer intern in Princeton, NJ is $24.00, according to ZipRecruiter salary data. Most workers in this role earn between $19.42 and $25.43 per hour, depending on experience, location, and employer.

What is an app developer intern?

An App Developer Intern is a temporary position where individuals gain hands-on experience in designing, coding, testing, and maintaining mobile or web applications. Interns typically work under the guidance of senior developers, learning best practices in app development, debugging, and UI/UX design. They may collaborate with teams to develop new features, fix bugs, and optimize app performance. This role helps build technical skills and industry experience, often serving as a stepping stone to a full-time development job.

What are the key skills and qualifications needed to thrive as an app developer intern?

To thrive as an App Developer Intern, you typically need a solid understanding of programming languages such as Java, Swift, or Kotlin, as well as coursework or experience in computer science or software development. Familiarity with tools like Android Studio, Xcode, source control systems like Git, and exposure to mobile app frameworks is commonly expected. Strong problem-solving skills, effective communication, eagerness to learn, and the ability to collaborate within a team will help set you apart. These competencies are crucial for contributing to real development projects, adapting to fast-paced environments, and learning from experienced developers.

What are the typical responsibilities of an app developer intern?

As an App Developer Intern, you can expect to assist with coding, debugging, and testing mobile applications under the guidance of experienced developers. You may work on adding new features, fixing bugs, updating existing app interfaces, or writing documentation for code. Collaboration is important, so you’ll attend team meetings, participate in code reviews, and communicate progress or obstacles with your mentors. This hands-on experience is designed to help you develop your technical skills while understanding how professional app development projects are managed.

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App Developer Intern jobs near you

Mobile iOS Developer Intern

Eulerity

New York, NY • On-site

$16 - $18/hr

Internship

Re-posted 2 days ago

Job description

Why This Role Exists
Eulerity is an AI-native marketing automation platform - not a legacy tool with AI bolted on. We serve enterprise brands like Mastercard, UPS Store, Uber Eats, and European Wax Center, automating digital advertising across thousands of franchise locations. We've crossed $10M ARR, largely bootstrapped, and we're accelerating.
Our iOS app is a critical surface for how clients interact with the platform - and we're looking for an intern who doesn't just write Swift, but builds with AI as their primary development tool. At Eulerity, AI-first development isn't a buzzword - it's how we actually ship code. Our engineers use Claude Code, agentic coding workflows, and prompt engineering as core parts of their daily process. We expect you to do the same.
You'll be building features that real users depend on, not a sandbox project that lives in a repo no one checks.
If you've shipped an app, already use AI coding tools to move faster than your peers, and know the difference between a good prompt and a great system - read on.
The Fast Facts
  • Compensation: $16-18/hour
  • Location: NYC Midtown - 3 days/week in office
  • Schedule: 30 hours/week
  • AI Tools: Unlimited. Claude Code, Copilot, whatever makes you sharp - we don't gatekeep tools here.
  • Start Date: As soon as possible
  • Perks: In-office lunches and unlimited snacks
What You'll Actually Do
This isn't a "shadow a senior dev and update button colors" internship. You'll own real work that ships to real users.
  • Take an active role in developing, testing, and maintaining our iOS app using AI-first development practices - Agentic coding tools are your daily drivers
  • Implement new features end-to-end, from design through deployment, leveraging AI at every stage: architecture decisions, code generation, debugging, testing, and review
  • Write effective prompts and system instructions as a core engineering skill
  • Collaborate with engineers, UX designers, and product managers across all phases of the project lifecycle
  • Contribute to building smart, adaptive interfaces that leverage AI to personalize the user experience
Who You Are
We're looking for someone who's technically sharp, builds with AI by default, and is energized by shipping things that matter - not just completing tickets.
Non-Negotiables
  • Currently a student based in the New York City Tri-State Area
  • At least 1 year of iOS development experience using SwiftUI, UIKit, and Xcode
  • Proficient in Swift with a solid understanding of iOS frameworks
  • You already build with AI - Claude Code, Copilot, or similar agentic coding tools are part of how you work, not something you've tried once
  • Strong prompting skills - you understand how to write effective prompts and system instructions to get high-quality output from LLMs
  • Strong UI development skills in SwiftUI / UIKit and hands-on experience with iOS libraries and APIs (CocoaPods, SPM, Firebase, etc.)
  • Knowledge of iOS design patterns and architectures (e.g., MVVM, MVC)
  • Experience with Git
  • You can take ownership of tasks and work independently, while also thriving in a collaborative team environment

Big Differentiators
  • You're genuinely AI-native - you've restructured your entire development workflow around AI tools because it makes you dramatically faster, not because it's trendy
  • Experience building or fine-tuning prompts for code generation, debugging, or automated testing workflows
  • You've shipped something real outside of coursework: a side project, a hackathon app, an App Store release - something you took from idea to existence
  • Hands-on experience with Agile development frameworks
  • Experience with unit testing and automated testing tools
  • Comfort working with large volumes of data and thinking about performance at scale
What Makes Eulerity Different
We are not a company that talks about AI. We are a company that runs on it.
  • Our platform uses cross-learning AI agents that optimize across thousands of advertiser accounts simultaneously - not just one
  • We have deep integration moats built over years with Google, Meta, Apple, and Microsoft - a barrier competitors can't replicate quickly
  • We are lean, profitable, and intentional about every hire - even interns get real scope from week one
  • Your work will ship. It will be seen by real users, measured in real results, and recognized on the team

This is a place where interns build things that matter.

Apply