Koray Kara
DE EN TR
Projects
Public demo Publicly accessible
Visit website

Brücke OS

A trilingual platform that organises source-based information about work, education and relocation between Germany and Türkiye.

Starting point

Information about moving to, working in and studying in Germany is spread across many public authorities, advisory organisations and websites. It is not always easy to determine when information was updated, which source supports it or whether it applies to an individual's situation.

The idea for Brücke OS emerged during my own preparation for Germany. While attending language courses, obtaining a ZAB Statement of Comparability, preparing documents and researching official sources, I saw how difficult it can be to track changes and understand the reasoning behind earlier decisions.

What does the platform do?

Brücke OS brings user profiles, documents, goals, tasks, process steps and guidance into one structure. The platform is available in German, Turkish and English.

Information-based answers include a source and review date. Calculable values such as deadlines, time periods, points and thresholds are not left to the language model; they are handled by separate, testable rules.

Queries that may require individual legal assessment are handled separately. The platform does not replace public authorities or qualified professional advice; it directs users to suitable sources and, where necessary, the appropriate specialist body.

Query Legal guard Sensitive topic? RAG Minimum similarity Rules engine deterministic LLM source required Legal guard Notice Source note Source · URL · Date · Confidence Refer to specialist body no source → “no information available”

My contribution

I developed the product concept, structured the requirements and designed the system architecture, domain model, data structure and quality approach. I also shaped the main user journeys, source references and calculation rules.

I used AI-assisted tools during implementation. Requirements, the data model, safeguards, testing approach and release approval remained my responsibility.

Current status

The information site and a demo covering a limited set of questions are publicly accessible. The main multi-role application is at working-MVP stage and is not used for real legal or migration cases.

Core features

  • Source and review-date display
  • Testable calculations for deadlines, time periods, points and thresholds
  • Content in German, Turkish and English
  • Checklists for documents and tasks
  • Boundary for queries requiring individual legal assessment
  • Separation of demo data from real data
LEGAL-GUARD 2 gates · RDG Domain-agnostic core Knowledge RAG Logic Rules Memory Context Trust Hash · Audit Orchestration Compose LLM · Retriever injected

Planned roles

  • Applicant
  • Adviser
  • Employer
  • Institution or foundation
  • Specialist body
  • Administrator

Each role receives access only to the information and functions required for its workflow.

Brücke OS Applicant Adviser Employer Institution/Foundation Specialist body Administrator

Technologies

Next.js · React · TypeScript · PostgreSQL · pgvector · Redis · Turborepo · Playwright · next-intl

Brücke OS is intended for general information and process organisation. It does not provide personalised legal advice.

Projects