[Hiring] Backend / Full-Stack Developer Intern @IndieKidz GmbH

Role Description

We are looking for a motivated Backend / Full-Stack Developer Intern to support the development of Occibo mainly open to work in early stage startup.

• Duration: 3–6 months
• Compensation: Unpaid mandatory internship

You will work on the technical development of Occibo, mainly on backend services, APIs, database logic, file handling, AI workflow integration, and selected full-stack features. This role is ideal for a student who wants hands-on experience building a real SaaS product using modern backend and AI infrastructure.

• Build and improve backend APIs using Node.js, TypeScript, and Express.js
• Work with Supabase for database, authentication, and data management
• Good to have: Experience in Langchain/Langgraph/Mastra
• 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

Qualifications

• You have hands-on knowledge of JavaScript / TypeScript
• Preference would be given if you have strong knowledge in AI Agentic frameworks like Langchain, Langgraph, Mastra
• You understand backend development, APIs, databases, and Git
• You are interested in early stage AI, SaaS products, and product development
• You can work independently in a remote setup
• You write clean code and are willing to learn
• You are reliable, curious, and proactive

Benefits

• Real experience building an AI SaaS product from 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 Description

IndieKidz GmbH is a Berlin-based early stage startup building creative learning products for children. We create screen-free books, magazines, and activities that blend early learning with cultural roots. Alongside this, we are building Occibo, a modern platform for authors and publishers. Occibo uses AI-assisted workflows to simplify children’s book creation. Together, we combine creativity, technology, and real publishing needs. Our goal is to make high quality children’s content easier to create and joyful to use.