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AI / Data Engineering Intern (f/m/d)
Work on the data and AI foundations behind Cortex: document flows, retrieval concepts, evaluation, and structured company intelligence.
Location
Remote within Germany
Employment type
Internship
Duration
3 months
Compensation
Unpaid
Eligibility
Enrolled students only
Posted
March 19, 2026
Hiring organization
Reflyne UG
Summary
Work on the data and AI foundations behind Cortex: document flows, retrieval concepts, evaluation, and structured company intelligence.
Why this role matters
AI is only useful in professional workflows when outputs are grounded, understandable, and easy to review. You help shape the layer that makes Cortex useful for teams handling complex documents, company data, and high-consequence decisions.
What you will work on
- Support data preparation, structuring, and quality checks
- Prototype retrieval and document intelligence workflows for M&A and advisory use cases
- Build small evaluation sets and review AI outputs for accuracy and traceability
- Map document structures, entities, and source references into product-ready concepts
- Document technical tradeoffs for product and engineering decisions
What you will learn
- How applied AI systems are evaluated beyond demos and prompt experiments
- How retrieval, data quality, and product UX influence each other
- How to work responsibly with sensitive information in AI workflows
What you should bring
- Enrolled in computer science, data science, AI, or a related field
- Interest in LLMs, retrieval, data pipelines, and evaluation
- Strong analytical thinking and careful documentation
- Comfortable working with sensitive information responsibly
Internship details
This internship is fully remote within Germany. It is limited to three months, unpaid, and intended only for enrolled students who can complete it as a mandatory internship or as a voluntary study-related orientation internship. You work close to the founding team and get realistic exposure to product building, customer work, and operating decisions.
Apply for this role
This role can be applied to directly on this page. No login is required. Submit your information and a PDF resume to the Reflyne team.
This internship is fully remote within Germany. It is limited to three months, unpaid, and intended only for enrolled students who can complete it as a mandatory internship or as a voluntary study-related orientation internship. You work close to the founding team and get realistic exposure to product building, customer work, and operating decisions.