Full-Stack AI Developer Intern – React / Python / LLMs / Agentic AI

GenX Leadership Academy | Talent Accelerator Program

About the Opportunity

GenX is looking for a motivated and technically capable Full-Stack AI Developer Intern to join our four-month Talent Accelerator Program.
We are looking for someone with practical full-stack development experience, particularly with React on the frontend and Python on the backend, who is interested in building modern AI-powered applications.
The ideal candidate has experience developing web applications, integrating APIs, and working with technologies such as Large Language Models (LLMs), Retrieval-Augmented Generation (RAG), and Agentic AI.
We welcome candidates ranging from mid-junior to senior experience levels who are interested in contributing to real-world software and AI projects.

About GenX

GenX is a company registered in Berlin, Germany, focused on developing innovative digital solutions and creating opportunities for professional growth through practical learning and collaboration.
Through the GenX Leadership Academy, we provide structured development opportunities that combine hands-on experience, mentorship, and exposure to real-world projects.

The Role

• As a Full-Stack AI Developer Intern, you will contribute to the development of web applications and AI-powered solutions.
• You will work across the frontend and backend, building user interfaces with React, developing backend services with Python and FastAPI, and integrating AI capabilities into applications.
• You will have opportunities to work on LLM integrations, RAG pipelines, AI agents, and intelligent workflows.
• Depending on your experience, you may take ownership of individual features or contribute to the design and implementation of complete application components.

Key Responsibilities

• Develop responsive and user-friendly web applications using React.
• Build reusable frontend components and manage application state.
• Develop backend services and REST APIs using Python and FastAPI.
• Connect frontend applications with backend services and external APIs.
• Integrate Large Language Models into web applications.
• Develop and improve RAG-based applications and workflows.
• Work with AI agents, tool calling, and agentic workflows.
• Integrate vector databases and semantic search capabilities.
• Work with document processing, embeddings, and information retrieval.
• Implement authentication, data handling, and application integrations where required.
• Test, debug, and optimize frontend and backend functionality.
• Collaborate with other developers to deliver complete application features.
• Participate in technical discussions, code reviews, and development planning.
• Document technical implementations and development processes.

Required Skills and Qualifications

• Practical experience in full-stack web development.
• Good knowledge of React and modern JavaScript or TypeScript.
• Strong understanding of HTML, CSS, and responsive web development.
• Practical experience with Python.
• Experience building backend applications or REST APIs, preferably using FastAPI.
• Understanding of frontend/backend integration and API communication.
• Familiarity with Git and collaborative development workflows.
• Interest in or practical experience with LLMs and AI-powered applications.
• Understanding of RAG concepts, embeddings, and semantic search.
• Interest in AI agents, automation, and intelligent workflows.
• Ability to troubleshoot problems and work independently.
• Good communication and collaboration skills.
• English proficiency sufficient for remote team communication.

Experience Levels

• We welcome applicants at different stages of their development careers:

Mid-Junior

• Approximately 1+ year of practical full-stack development experience, or equivalent hands-on project experience.
• Experience building frontend applications with React.
• Familiarity with Python and backend API development.
• Basic understanding of LLMs and AI-powered applications.
• Interested in developing skills in RAG, vector databases, and agentic AI.

Experienced / Mid-Level

• Strong practical experience developing full-stack applications.
• Comfortable building frontend features with React and backend services with Python.
• Experience working with FastAPI or comparable backend frameworks.
• Able to integrate APIs, databases, and external services.
• Experience integrating LLMs or building AI-powered application features.
• Familiarity with RAG pipelines, embeddings, or AI agent frameworks.

Senior

• Extensive experience designing and developing full-stack applications.
• Strong React and Python development capabilities.
• Experience designing backend architectures and API integrations.
• Practical experience building LLM-powered applications, RAG systems, or agentic AI workflows.
• Able to contribute to technical architecture, scalability, and application performance.
• Comfortable supporting other developers and improving development practices.
• Interested in contributing within the scope and part-time structure of an internship.

Who We're Looking For

We are looking for someone who:

• Has a genuine interest in full-stack software development and applied AI.
• Enjoys building complete applications, from frontend interfaces to backend services.
• Has practical experience with React and is comfortable working with Python.
• Is curious about LLMs, RAG, and Agentic AI.
• Enjoys experimenting with new technologies and turning ideas into working applications.
• Can work independently and take ownership of assigned tasks.
• Communicates clearly and collaborates effectively with a remote team.
• Is open to feedback and continuous learning.
• Keeps up with developments in modern web development and AI engineering.

What You Can Expect

Hands-on experience developing full-stack web applications.
Opportunities to build and integrate AI-powered features.
Practical exposure to React, Python, FastAPI, LLMs, RAG, and Agentic AI.
Collaboration with an international and distributed team.
Opportunities to strengthen both frontend and backend development skills.
Feedback and opportunities for professional development.
The opportunity to contribute to practical software and AI projects.

Internship Details

Position

• Full-Stack AI Developer Intern

Program

• GenX Leadership Academy – Talent Accelerator Program

Duration

• 4 months

Workload

• Part-time, 16–20 hours per week

Location

• Remote

Eligible locations

• Germany and Europe

Company registration

• Berlin, Germany

Engagement type

• Internship

Compensation

• To be communicated during the selection process

Important Notes

• This is a four-month internship, not a freelance or independent contractor position.
• The internship is part-time and remote.
• Applicants should be able to commit approximately 16–20 hours per week.
• Candidates with mid-junior, mid-level, or senior experience are welcome.
• Practical React and full-stack development experience is strongly preferred.
• Experience with LLMs, RAG, and Agentic AI is an advantage; a strong interest and willingness to develop in these areas are also welcome.
• Specific internship compensation and applicable arrangements will be communicated during the selection process.

Application Screening Questions

• Do you have practical experience in full-stack web development?
• Have you developed applications using React?
• Are you comfortable working with JavaScript or TypeScript?
• Do you have practical experience with Python?
• Have you developed backend services or APIs using FastAPI?
• Have you integrated frontend applications with REST APIs and databases?
• Have you worked with Large Language Models (LLMs)?
• Have you built or experimented with RAG-based applications?
• Have you worked with embeddings or vector databases?
• Have you built or experimented with AI agents or agentic workflows?
• Can you commit 16–20 hours per week for the full four-month internship?
• Are you currently based in Germany or another European country?