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FIZ Karlsruhe – Leibniz Institute for Information Infrastructure

PhD or PostDoc Opening in Ontologies, Knowledge Graphs, and Semantic Technologies at FIZ Karlsruhe FIZ Karlsruhe – Leibniz Institute for Information Infrastructure in Germany

Degree Level

PhD, Postdoc

Field of study

Computer Science

Funding

Full funding available

Deadline

Aug 20, 2026

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Country

Germany

University

FIZ Karlsruhe – Leibniz Institute for Information Infrastructure

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Keywords

Computer Science
Information Technology
Materials Science
Artificial Intelligence
Semantic Web
Materials Engineering
Large Language Models
Machine learning

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About this position

FIZ Karlsruhe is advertising a PhD/Junior Researcher or PostDoc/Senior Researcher position in the Information Service Engineering department, specifically in the Knowledge Graph team. The role is connected to the Platform MaterialDigital III (PMD III) project and focuses on ontologies, ontology design, ontological engineering, knowledge graphs, semantic technologies, knowledge extraction, and related AI methods.

The research environment combines semantic web standards, NLP, machine learning, and symbolic knowledge representation (neurosymbolic AI). Application areas include materials science engineering, as well as cultural heritage, digital humanities, research data management, semantic annotation, exploratory search, recommender systems, and question answering.

Eligibility: applicants should have a very good Master’s degree for the PhD track or a PhD for the PostDoc track in computer science or a comparable discipline. Strong software engineering skills are required. Excellent English is expected; German is helpful but not mandatory. For PostDocs, publications in peer-reviewed international journals/conferences are expected, and funding acquisition experience is a plus. Ideal candidates have expertise in at least two of: ontologies, ontology design, ontological engineering, knowledge graphs, semantic technologies, large language models, and machine learning.

Funding and conditions: this is a paid, fixed-term employment position under TVöD (VKA) pay grade 13, with benefits including a company pension plan, flexible work schedules, and remote work up to 80%. The contract runs until 30 September 2028 and can be full-time or part-time.

How to apply: submit your application via the online career portal. The requested documents include a CV, degree certificates and transcripts, publication record or thesis writing samples, letters of recommendation, and a motivation letter outlining your research goals. The deadline is 20 August 2026.

Supervision/contact: technical questions can be directed to Prof. Dr. Harald Sack or Dr. Jörg Waitelonis at FIZ Karlsruhe.

Funding details

Full funding including tuition fees and living expenses is available for this position. The scholarship covers all educational costs and provides a monthly stipend.

How to apply

Please submit your application including a cover letter, CV, academic transcripts, and contact information for two references. Applications should be sent via the online portal before the deadline.

More information can be found here

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