Mandatory Internship (Unpaid): Agentic Backend / Full-Stack Developer (NodeJS/TypeScript)

Stack

Responsibilities

• ▹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
• ▹Willingness to write clean code and learn

Nice to have

• ▹Experience with AI agentic frameworks: Langchain, Langgraph, Mastra

Soft skills

What we offer

• ▹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

About the company

IndieKidz GmbH is a Berlin-based early-stage startup building creative learning products for children. Its product, Occibo, is an AI-assisted children's book creation platform for authors, parents, teachers and small publishers.