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Umanitek

Umanitek is the team behind Guardian, an AI identity protection platform built to detect impersonation, deepfakes, and harmful content across social media and AI models, then help take it down.

18/08/2026
Full time
Ai & Knowledge Graph Engineer
Umanitek Zug, ZG, Switzerland
About us At Umanitek, we work at the frontier of neuro-symbolic AI to build systems that protect humans from deepfakes and impersonation. Our core product, the Umanitek Guardian pipeline and agent network, grounds intelligence in RDF knowledge graphs to provide robust threat detection. We are dedicated to building hybrid reasoning capabilities that combine SPARQL-driven graph logic, risk scoring, entity resolution, embedding similarity, and media analysis into a single, coherent system to defend against modern digital threats. Responsibilities Develop and optimize hybrid reasoning systems combining Knowledge Graphs, LLMs, embedding search, and symbolic reasoning. Build and evolve the Guardian stack (RDF, SPARQL, provenance modeling, schema/ontology design) for neuro-symbolic reasoning. Build and test data collection tools enabling Guardian's AI analysis system to securely process data from multiple data sources at scale. Measure and improve risk scoring, graph...