HN Jobs

Horison.ai | Applied Research Engineer + ML/AI Engineer | London, UK (Onsite/Hybrid) Horison is building the intelligence substrate for private capital - not another RAG wrapper, but a foundational platform for how organisations structure, contextualise, and reason over proprietary information. We're a funded, early-stage team of second-time founders, with backgrounds across fintech infrastructure, ML, and knowledge representation. As Applied Research Engineer, you'll own the depth of our knowledge and retrieval infrastructure - ontology design, hybrid retrieval (dense/sparse/structured), information extraction, and knowledge quality systems. You'll translate research into production and shape the technical direction of a core system from day one. You should have research experience in IR, NLP, or knowledge representation, and you should have shipped something real. Team of six, high ownership, no fluff. anish [at] horison [dot] ai