Software Development

IndieKidz GmbH

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IndieKidz GmbH is a Berlin-based early stage startup building creative learning products for children.
Our software product, Occibo, is an AI-assisted children’s book creation platform. It helps authors, parents, teachers, and small publishers turn a manuscript into a complete children’s book workflow, including editing, illustration planning, character consistency, layout, export, and promotional assets.
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
<h2>Tasks</h2>
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.
<ol>
<li>Build and improve backend APIs using Node.js, TypeScript, and Express.js</li>
<li>Work with Supabase for database, authentication, and data management</li>
<li>Good to have: Expereince in Langchain/Langgraph/Mastra</li>
<li>Support file storage workflows using Cloudflare R2</li>
<li>Help build AI workflow orchestration for book creation, illustration, layout, and export</li>
<li>Work with queue-based processing using Redis and BullMQ</li>
<li>Support integration with AI image-generation workflows such as ComfyUI</li>
<li>Create clean, maintainable, and well-documented code</li>
<li>Debug, test, and improve existing backend services</li>
<li>Support selected frontend or full-stack tasks when needed</li>
<li>Collaborate with product, design, and content team members</li>
</ol>
<h2>Requirements</h2>
<ul>
<li>You have hands-on knowledge of JavaScript / TypeScript</li>
<li>Preference would be given you have strong knoweldge in AI Agentic frameworks like Langchain, Langgraph, Mastra</li>
<li>You understand backend development, APIs, databases, and Git</li>
<li>You are interested in early stage AI, SaaS products, and product development</li>
<li>You can work independently in a remote setup</li>
<li>You write clean code and are willing to learn</li>
<li>You are reliable, curious, and proactive</li>
</ul>
<h2>Benefits</h2>
<ul>
<li>Real experience building an AI SaaS product from early stage</li>
<li>Hands-on work with modern backend and AI infrastructure</li>
<li>Exposure to product thinking, architecture, and startup execution</li>
<li>Opportunity to work directly with the founder</li>
<li>Remote and flexible working setup</li>
<li>Internship certificate after successful completion</li>
<li>Recommendation letter based on performance</li>
</ul>
Company
IndieKidz GmbH / Occibo:
Location: Remote
Employment Type: Mandatory/Voluntary Internship / Pflichtpraktikum
Duration: 3–6 months
Compensation: Unpaid mandatory internship
Please send us:
Your CV
GitHub profile or portfolio
Short note explaining why you are interested in this internship
Your required internship duration, availability hrs/week and earliest start date

Mandatory Internship(Unpaid): Agentic Backend / Full-Stack Developer(NodeJS/Typescript) for AI SaaS

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