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# Semantic Backend Developer

- **Company:** Leibniz Institut zur Analyse des Biodiversitätswandels
- **Location:** Hamburg, Germany
- **Contract:** Temporary to permanent
- **Skills:** Java (Programming Language), Application Programming Interfaces (APIs), Artificial Intelligence, Databases, Graph Database, Interoperability, Python (Programming Language), Linked Data, Software Engineering, Management of Software Versions, Data Ingestion, Backend, Kotlin, Event Driven Architecture, Information Technology
- **Published:** August 6, 2026
- **Apply:** https://www.service.bund.de/IMPORTE/Stellenangebote/interamt/2026/08/1477680.html?nn=4642046&type=0&searchResult=true

## About the Role

* Strong expertise in knowledge graphs and semantic technologies .
 * Ability to design conceptual and technical architectures for complex knowledge structures, including hybrid solutions combining semantic technologies, classical databases, and AI-mediated representations.
 * Strong backend programming and software development skills in languages such as Python, Java, Kotlin, or Scala, including clean, modular, tested, and well-documented code.
 * Experience designing maintainable, modular, service-oriented or event-driven systems, including APIs, versioning, service integration patterns, and interoperability across heterogeneous tools.
 * Experience with data ingestion, transformation, and validation pipelines using technologies such as SHACL or LinkML.
 * Familiarity with FAIR data principles and related approaches , including Linked Data, persistent identifiers, FAIR Digital Objects, Nanopublications, and RO-Crates.
 * Knowledge of biodiversity informatics , life sciences data , or museum/collection data .
 * Strong communication skills for working with researchers, curators, data scientists, software developers.
 * Experience in applying for third-party funding (national and international).
 * Experience in networking on national and international levels and contributing to long-term projects and goals.
 * Proven publication record and/or proven track of software contributions or maintained code repositories.

## Description

* Contribute to shaping the architecture of the LIB Open Knowledge Space (LIB-OKS) .
 * Development of the semantic backend (database infrastructure) of the LIB-OKS and implementation of interfaces and program logic for the provision and curation of data from the LIB-OKS.
 * Contribution to the design and implementation of front-end views for the presentation and curation of the LIB-OKS.
 * Integration of existing databases into the LIB-OKS .
 * Act as a technical gatekeeper for production systems : Ensure that emerging solutions meet high standards of: Quality, Sustainability, Interoperability and ensure compliance with the FAIR and CLEAR Principles.
 * Support agile prototype development .
 * Contribute to the development of national and international networks for biodiversity research and knowledge science (e.g., NFDI, DiSSCo, TDWG).
 * Assist in securing external funding for research projects .
 * Enable the reuse of software components by the wider biodiversity and research infrastructure community.


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