Role OverviewLiftPilot.ai is building an enterprise architecture that’s redefining the B2B website buying experience. We are looking for a Senior AI Prompt Engineer who can design and build the core prompt architecture behind our AI systems and take responsibility for all product LLM output.Responsibilities Design and optimize prompts for LLMs across LiftPilot’s core products Build and maintain retrieval-augmented generation (RAG) pipelines that power knowledge grounding for dynamic content Architect and implement evaluation and scoring frameworks to measure prompt performance, relevance, and business impact (engagement rates, conversions) Optimize cost and efficiency in production: smart caching, token budgeting, prompt batching, and tuning to hit performance and latency targets Work directly in code (not just GUIs or hosted platforms) to integrate LangSmith, vector stores, LLM APIs, and other NLP infrastructure into LiftPilot’s backend Tie AI outputs to performance data so that AI relevance directly improves key customer metrics Collaborate with product, growth, and engineering on data schemas, enrichments, and delivery APIs Requirements Solid experience with RAG workflows and prompt engineering in real products, especially at scale Familiarity with vector databases or embedding stores (Pinecone, Milvus, Weaviate, etc.) Hands-on experience with LangSmith or similar evaluation / observability tooling Strong coding skills in JavaScript Understanding of web analytics, and experience using analytics data to inform AI behavior and optimization Demonstrated experience optimizing token usage, caching strategies, prompt templates, and cost at scale for LLM-driven systems Must speak fluent English to evaluate model output Nice to Have Experience in B2B SaaS or enterprise deployment contexts, ideally covering marketing, sales, ABM, or GTM systems Experience building or evaluating A/B tests tied to AI output performance Prior work in conversion rate optimization, personalization engines, or adaptive experience tooling Knowledge of modern frontend frameworks and how AI services integrate with web platforms What We Value in You You operate at the intersection of engineering and AI experimentation You want to be part of an all-star team and create an AI product that’s far bigger than anything you could build on your own The industry is rapidly changing week to week. You’re excited to stay on top of the curve, continuing to learn and experiment Perks & Benefits🌍 Work from anywhere⏳ Flexible hours🏝 Paid time off + holidays🛫 Team offsites🩺 Subsidised Health insurance