Ph.D. Georgi Simeonov is  assist. professor  at the Institute of Mathematics and Informatics, Bulgarian Academy of Sciences. 

Extensive experience with transformer frameworks and deep learning (LLM, RAG, Knowledge Graphs), including PyTorch, TensorFlow, and open LLM models. Experienced with Document Management Systems, digital repositories, and platforms for long‑term data preservation. Skilled in ETL , metadata management, data mining, information retrieval, search and indexing, and metadata harvesting via OAI‑PMH.  Contributed to European initiatives that build open‑access scientific infrastructures and federated networks of electronic repositories and archives.

Key contributions

• System design and implementation — Architected and deployed scalable DMS and digital repository solutions optimized for long‑term storage and discoverability.

• Data integration and processing — Built ETL pipelines to ingest, normalize, and enrich heterogeneous datasets for repository ingestion and analytics.

• Metadata strategy — Defined metadata schemas, implemented harvesting workflows, and ensured interoperability across repositories using OAI‑PMH.

• Search and retrieval — Implemented indexing and search solutions to improve discoverability and relevance for large collections.

• Standards and interoperability — Ensured compliance with open‑access and repository standards to enable federation and centralized access via web services.

Selected OA projects

• OpenAIRE — Contributed to the Open Access Infrastructure for Research in Europe, supporting federation of repositories and centralized discovery services.

• EuDML — Worked on the European Digital Mathematics Library to aggregate and provide access to mathematical literature.

• DRIVER — Participated in the Digital Repository Infrastructure for research.