
In modern and increasingly decentralized data ecosystems, the automated integration of heterogeneous systems plays a central role. The goal of this thesis is to automatically generate semantically enriched JSON‑LD from existing JSON‑based API endpoints, leveraging ontology recommendations and domain-specific knowledge models. This should significantly reduce manual modeling effort and enable simple, interoperable data exchange. The work contributes to the digitalization of the energy sector by applying semantic methods to interconnect previously isolated data sources. This enables new value creation, e.g., through more efficient data usage, automated analyses, and improved collaboration between actors. In the long term, it supports the energy transition, as digital interoperability is a key requirement for flexibility, transparency, and the integration of modern energy generation units and storage systems.
Be part of change
Automatic derivation of JSON‑LD contexts and structures from JSON data Use of ontology rankings to generate semantically correct types and properties Validation using SHACL, SPARQL, or reasoning Prototypical implementation of a pipeline for transforming API data into JSON‑LD Evaluation with real or synthetic interfaces from energy or IoT systems The detailed design of the thesis can be adapted to the student's interests.
What you contribute
What we offer
We value and promote the diversity of our employees' skills and therefore welcome all applications – regardless of age, gender, nationality, ethnic and social origin, religion, ideology, disability, sexual orientation and identity. Severely disabled persons are given preference in the event of equal suitability. Our tasks are diverse and adaptable – for applicants with disabilities, we work together to find solutions that best promote their abilities.
With its focus on developing key technologies that are vital for the future and enabling the commercial utilization of this work by business and industry, Fraunhofer plays a central role in the innovation process. As a pioneer and catalyst for groundbreaking developments and scientific excellence, Fraunhofer helps shape society now and in the future.
Ready for a change? Then apply now and make a difference! Once we have received your online application, you will receive an automatic confirmation of receipt. We will then get back to you as soon as possible and let you know what happens next.
Anna-Lena Peh anna-lena.peh@iosb-ast.fraunhofer.de
Fraunhofer Institute of Optronics, System Technologies and Image Exploitation IOSB
Requisition Number: 83953 Application Deadline:

Die Fraunhofer-Gesellschaft ist eine der führenden Organisationen für anwendungsorientierte Forschung: Seit der Gründung 1949 stärken Fraunhofer-Institute die Wettbewerbsfähigkeit der Wirtschaft und den Innovationsraum in Deutschland und Europa. Mit ganzheitlichen Angeboten für Wirtschaft und Politik liefert Fraunhofer Lösungen für branchenübergreifenden Impact. Darüber hinaus ist die Fraunhofer-Gesellschaft ein bedeutender Standortfaktor für das Innovationsland Deutschland: Durch die Aktivitäten erhöhen sich Investitionseffekte in der Wirtschaft, erlangen Unternehmen innovationsbasierte Wettbewerbsvorteile, entstehen Arbeitsplätze, Fachkräfte werden qualifiziert und es steigt die gesellschaftliche Akzeptanz moderner Technik.