Senior Ontology Engineer

Job description

SAEKI - Manufacturing at software speed Europe's defense industrial base cannot respond at the speed modern conflict requires. Legacy suppliers operate on month-long timelines. Tribal knowledge is retiring. Supply chains are fragile. SAEKI is building the operating system for autonomous factories — the infrastructure that lets Europe manufacture mission-critical components at software speed. As we scale Factory ONE in Germany, we aren't just collecting data — we are building a "live" digital twin where every machine state, material property, and kinetic action is semantically understood. We need a Senior Ontology Engineer to build the knowledge graph and semantic framework that serves as the nervous system for our Manufacturing Intelligence. The Role: As the Senior Ontology Engineer, your mandate is to turn physical chaos into structured, actionable intelligence. You will own the design and implementation of the SAEKI Factory Ontology — the semantic framework that defines how our software "thinks" about the physical world. Based at our HQ in Zurich (Oerlikon), you will work at the intersection of backend engineering and knowledge representation. You aren't just managing a database...