Backend / Full-Stack Developer Intern (m/f/d)

IndieKidz GmbH, a Berlin-based early-stage startup, is developing Occibo, an AI-assisted children’s book creation platform. We are looking for a motivated Backend / Full-Stack Developer Intern to support the development of Occibo, primarily focusing on backend services, APIs, database logic, file handling, AI workflow integration, and selected full-stack features.

About the Role

This internship offers hands-on experience building a real SaaS product using modern backend and AI infrastructure. You will work directly with the founder and gain exposure to product thinking, architecture, and startup execution.

Tasks

• Build and improve backend APIs using Node.js, TypeScript, and Express.js.
• Work with Supabase for database, authentication, and data management.
• Support file storage workflows using Cloudflare R2.
• Help build AI workflow orchestration for book creation, illustration, layout, and export.
• Work with queue-based processing using Redis and BullMQ.
• Support integration with AI image-generation workflows such as ComfyUI.
• Create clean, maintainable, and well-documented code.
• Debug, test, and improve existing backend services.
• Support selected frontend or full-stack tasks when needed.
• Collaborate with product, design, and content team members.

Requirements

• Hands-on knowledge of JavaScript / TypeScript.
• Understanding of backend development, APIs, databases, and Git.
• Interest in early-stage AI, SaaS products, and product development.
• Ability to work independently in a remote setup.
• Writes clean code and is willing to learn.
• Reliable, curious, and proactive.

Benefits

• Real experience building an AI SaaS product from an early stage.
• Hands-on work with modern backend and AI infrastructure.
• Exposure to product thinking, architecture, and startup execution.
• Opportunity to work directly with the founder.
• Remote and flexible working setup.
• Internship certificate after successful completion.
• Recommendation letter based on performance.

Company

• Company: IndieKidz GmbH / Occibo
• Location: Remote
• Employment Type: Mandatory Internship / Pflichtpraktikum
• Duration: 3–6 months
• Compensation: Unpaid mandatory internship

Application

Please send your CV, GitHub profile or portfolio, a short note explaining your interest, your required internship duration, and earliest start date.