Founding Account Executive
Sales & Business Development
London, UK
Posted on Jul 27, 2026
Prometheux is building the ontology-native infrastructure for operational AI. Reliable AI in enterprise faces two major problems:1. The model problem: Frontier models are probabilistic, unpredictably expensive, slow, and un-auditable for regulated industries. They are compilations of averages that don't understand your unique business logic — your competitive advantage.2. The data problem: Enterprise data is fragmented and means nothing without context. Multiple disconnected systems with inconsistent business definitions and siloed operational knowledge, pieced together by static dashboards and brittle pipelines.Prometheux turns business logic into executable ontologies that process data wherever it lives — across databases, warehouses, and cloud platforms — without migrations or duplication. Natively neurosymbolic AI:• The PX Engine handles deterministic logic and operational reasoning• LLMs handle language and intuitionWe're looking for a highly motivated, self-starter Founding Account Executive to help define our product-market fit and build the infrastructure to scale to $100M ARR.What You'll Do• Hunt for new accounts across multiple industries adopting AI to help Prometheux meet its revenue goals• Identify new business opportunities and use cases where Prometheux can deliver the most value to enterprise• Own complex enterprise sales cycles from outbound through close• Build relationships with senior technical and business stakeholders• Translate customer operational problems into platform deployments• Work closely with founders, FDEs, and engineering teams on customer strategy• Help shape GTM messaging, positioning, and vertical strategy• Demonstrate a deep understanding of the data and AI landscapeWho You Are• 4–6 years of sales experience in enterprise SaaS or technology, ideally with exposure to data and AI platforms• Proven track record of meeting and exceeding sales targets in a fast-paced environment• Excellent communicator with the ability to build relationships at all levels of an organization• Background in environments where products required deep technical selling• Experience selling complex data, infrastructure, or AI platforms into large enterprises is a strong plus• Highly entrepreneurial and want to help build a company from the ground up• Thrives in ambiguity and moves fast without heavy processWhy Join Prometheux• High impact, high ownership — you'll shape how we sell and scale• We work between London, Rome, and San Francisco, staying close to those shaping the frontier of technology• You'll be at the cutting edge of data and AI, building products that don't exist yet