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

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

Tasks

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
• 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

• You have hands-on knowledge of JavaScript / TypeScript
• 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

IndieKidz GmbH / Occibo

Location

Remote

Employment Type

Mandatory 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 and earliest start date

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Position Details

• Job Title: Mandatory Internship(Unpaid): Backend / Full-Stack Developer for AI SaaS
• Company / Organisation: IndieKidz GmbH
• Location: Remote
• Employment Type: Full-time
• Field / Industry: Software Development
• Work Arrangement: Remote - open to candidates worldwide

About This Opportunity

This full-time opportunity at IndieKidz GmbH is an excellent opening for experienced professionals in the field of software engineering and technology. The role is structured around a fully remote setup - offering you the freedom to work from any location in the world and is designed for candidates who are ready to make a meaningful contribution from the moment they join.

As a remote-first position, this role welcomes qualified candidates from across the globe. You will be expected to manage your schedule independently, communicate proactively, and deliver results consistently - hallmarks of a high-performing remote professional.

Whether you are an established practitioner in software engineering and technology or a highly skilled professional looking for your next challenge, this Mandatory Internship(Unpaid): Backend / Full-Stack Developer for AI SaaS role offers the platform to apply your expertise in a real-world, results-oriented environment. IndieKidz GmbH is looking for a candidate who can hit the ground running and add genuine value to the team.

Who Should Apply

This role is ideal for candidates who have a solid background in software engineering and technology and a demonstrable track record of delivering high-quality results. You should possess analytical thinking, attention to technical detail, and a methodical approach to problem-solving. Experience working with modern development tools, version control systems, and cloud platforms will be an advantage, though a commitment to continuous learning and professional development is equally valued.

Beyond technical or domain expertise, IndieKidz GmbH is looking for someone who communicates clearly, collaborates effectively with colleagues and stakeholders, and takes ownership of their work from start to finish. If you thrive in a professional environment and are passionate about the opportunity to build reliable, scalable, and high-performing digital products, we encourage you to apply.

Key Competencies for This Role

Successful candidates for the Mandatory Internship(Unpaid): Backend / Full-Stack Developer for AI SaaS position at IndieKidz GmbH will typically demonstrate the following core competencies:

• Domain expertise - a strong foundation of knowledge and hands-on experience in software engineering and technology
• Problem-solving ability - the capacity to identify challenges, think critically, and implement practical solutions efficiently
• Communication skills - clear and professional communication with colleagues, stakeholders, and partners at all levels
• Self-management - strong time management and the ability to prioritise a varied workload while meeting deadlines
• Team collaboration - a collaborative and supportive approach to working alongside colleagues across departments or locations
• Adaptability - the ability to respond positively to change and thrive in a dynamic, evolving work environment

How to Apply

To apply for this Mandatory Internship(Unpaid): Backend / Full-Stack Developer for AI SaaS position at IndieKidz GmbH, click the "Apply Now" button on this page. You will be taken directly to the official application page where you can complete and submit your application.

Before applying, please ensure that your CV or résumé is fully up to date and clearly highlights your experience and accomplishments in software engineering and technology. If a cover letter is included or requested, tailor it specifically to this role and explain how your background, skills, and goals align with what IndieKidz GmbH is looking for in a Mandatory Internship(Unpaid): Backend / Full-Stack Developer for AI SaaS.

All applications for this role are processed directly by IndieKidz GmbH. Career Nest facilitates the job discovery process and does not pre-screen or forward applications on behalf of employers. There are no fees for job seekers at any stage of the application process.

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