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.ResponsibilitiesDesign and optimize prompts for LLMs across LiftPilot’s core productsBuild and maintain retrieval-augmented generation (RAG) pipelines that power knowledge grounding for dynamic contentArchitect 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 targetsWork directly in code (not just GUIs or hosted platforms) to integrate LangSmith, vector stores, LLM APIs, and other NLP infrastructure into LiftPilot’s backendTie AI outputs to performance data so that AI relevance directly improves key customer metricsCollaborate with product, growth, and engineering on data schemas, enrichments, and delivery APIsRequirementsSolid experience with RAG workflows and prompt engineering in real products, especially at scaleFamiliarity with vector databases or embedding stores (Pinecone, Milvus, Weaviate, etc.)Hands-on experience with LangSmith or similar evaluation / observability toolingStrong coding skills in JavaScriptUnderstanding of web analytics, and experience using analytics data to inform AI behavior and optimizationDemonstrated experience optimizing token usage, caching strategies, prompt templates, and cost at scale for LLM-driven systemsMust speak fluent English to evaluate model outputNice to HaveExperience in B2B SaaS or enterprise deployment contexts, ideally covering marketing, sales, ABM, or GTM systemsExperience building or evaluating A/B tests tied to AI output performancePrior work in conversion rate optimization, personalization engines, or adaptive experience toolingKnowledge of modern frontend frameworks and how AI services integrate with web platformsWhat We Value in YouYou operate at the intersection of engineering and AI experimentationYou 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 ownThe industry is rapidly changing week to week. You’re excited to stay on top of the curve, continuing to learn and experimentPerks & Benefits🌍 Work from anywhere⏳ Flexible hours🏝 Paid time off + holidays🛫 Team offsites🩺 Subsidised Health insurance