Ezzeldin Shereen is an R&D AI Engineer at Axiomatics, where he helps organizations integrate fine-grained authorization into AI agents and MCP applications. Previously, he was a researcher at The Alan Turing Institute in London, working on the security of LLMs, AI agents and retrieval augmented generation (RAG), and earned his PhD from KTH Royal Institute of Technology in Sweden. He previously published and presented his research and engineering work at international AI conferences such as NeurIPS and ACL.