Senior Software Engineer

Senior Full Stack AI EngineerLondon (Hybrid) | £100,000–£140,000 + EquityWe're partnering with a venture-backed AI startup that recently emerged from stealth with significant seed funding.Founded by former Palantir engineers, they're building an AI operating system for drug discovery—helping scientists reason over complex scientific evidence and accelerate the development of new medicines.They're looking for Senior Full Stack Engineers who have gone beyond experimenting with AI and have genuinely shipped AI-powered products into production.What you'll be doingYou'll work across the full stack, taking ownership of product features from idea through to production.You'll help build:AI-powered user experiencesAgentic workflowsRetrieval and evaluation systemsFrontend, backend and API layersInternal tooling that helps a small engineering team move quicklyReliable AI systems that users can trustYou'll work directly with founders, customers and domain experts, turning ambiguous problems into production software.What they're looking for3+ years' commercial software engineering experienceStrong full stack engineering skillsExperience shipping AI features into productionComfortable discussing prompts, evals, latency, failure modes and AI product trade-offsUses AI coding tools as part of day-to-day developmentExperience in a high-bar engineering environmentProduct mindset with a bias towards ownership and executionWhy join?Recently emerged from stealth with significant seed fundingExceptional founding team with deep AI and enterprise software experienceSmall engineering team with genuine ownership from day oneOpportunity to build AI products solving real-world scientific problems£110,000–£140,000 base + meaningful equityHybrid working from Central London