Applied AI Engineer / Data Scientist - London - FinTech Start-up

Applied AI Engineer/Data Scientist | London | £90k + Equity | Pre-Seed FinTech 🚀 OB have recently partnered with a London-based FinTech currently raising their pre-seed round , looking for an experienced AI/Data Science hire to join their small team as they enter their next stage of growth. This is very much a build, ship and own environment. You’ll be working on the hard problems behind financial data automation, extracting and matching information often from messy, unstructured data. The technical challenges include: 🧠 LLMs in production 📊 Confidence scoring \& threshold calibration 🔄 Solving cold-start problems 🧪 Building evaluation infrastructure and harnesses ⚙️ Production-first ML systems 💡 Designing structure in an inherently ambiguous environment They’re AI-native from the ground up , treating LLMs as infrastructure rather than simply adding AI features to an existing product. The ideal background: * 3+ years shipping applied ML/AI into production * Strong Python * Proven hands-on experience with LLMs in production * Built evaluation frameworks/harnesses * Experience in FinTech, LegalTech, Insurance or another regulated environment * Comfortable with ambiguity and high levels of autonomy The opportunity: 💰 Up to £90k + meaningful equity 📍 3–4 days a week in London 🌴 Unlimited holiday 🤝 Small, high-trust team 🚀 Join at the very beginning of the company's growth journey If you're looking for an opportunity where your work will directly shape the AI product and engineering culture , I'd love to speak. Apply below for more details. FinTech | Early-Stage start-up | London | Data Science | AI | LLMs