Software Engineer

Do you have a track record of building exceptional software and want to work on a genuinely ambitious AI product? Are you excited by high ownership, cutting-edge AI tooling, deep technical challenges, and the opportunity to become a technical leader within a small, elite engineering team? 🚀 Software Engineer – AI x Financial Modelling 🚀 💰 Salary: Up to £250k DOE + equity 📍 Location: London - onsite 5 days per week 🌍 Will relocate and sponsor 🧠 Experience: Exceptional engineers – high agency and strong technical fundamentals I’m excited to be working with a very ambitious AI startup reinventing how businesses make some of their biggest decisions. They’re starting by building the best AI add-in for complex financial modelling in Excel – essentially Cursor for financial modelling. Financial models sit underneath huge decisions across M&A, private equity, investment, corporate strategy and consulting, yet the tooling behind them remains incredibly manual and outdated. They’re building something fundamentally different. Long-term, their ambition is to create an AI operating system for the entire strategic decision lifecycle – spanning Excel, PowerPoint, email and meetings. They’re tackling a potentially enormous new category at the intersection of AI, software engineering and financial decision-making. They’re now looking for exceptional Software Engineers to join a small, extremely high-calibre engineering team and help build the product from the ground up. 💡 You’ll work directly on: Owning features end-to-end – from Rust services and backend infrastructure through to the frontendUsing the latest AI tools and models to ship high-quality software at exceptional speedBuilding and improving AI agents, including their harness, tools and context optimisationWriting highly performant software – removing allocations, optimising queries and caching aggressivelyOwning and improving backend infrastructure and CI pipelinesDebugging low-level issues and continuously optimising system performanceWorking closely with design to ensure every feature feels polished, beautiful and consistentTaking increasing technical ownership as the company and product scale ✅ They’re particularly interested in engineers who have: Evidence of being a top-centile engineerExceptional problem-solving ability and strong software engineering fundamentalsHigh agency, determination and a genuine desire to take ownershipThe ability to move quickly, learn new technologies and wear multiple hatsA strong interest in AI and experience using modern AI coding tools effectivelyThe ability to work across the stack rather than being restricted to one areaA genuine passion for building great products, not simply writing code 💻 Tech stack: Rust (but they are open to any low-level language e.g. C++)TypeScriptReactAI / LLM toolingBackend infrastructure & DevOps 🎯 Bonus points for: Competitive programming experience e.g. Olympiads or Programming ContestsTrading or financial technology backgroundAI Tech experienceExperience building AI agents 🔎 What they’re looking for: High agency – you see a problem and take ownership of solving itTechnical excellence – you care about performance, architecture and writing exceptional softwareAI-native mindset – you understand that AI is now an essential part of the engineering workflowSpeed + quality – you can leverage AI to move incredibly quickly without becoming a “vibe coder”Curiosity – you enjoy getting into unfamiliar areas and figuring things outProduct mindset – you care about how the software feels, not just whether it worksLeadership potential – over time, you’ll have the opportunity to own significant parts of the product 🚀 Why join? Join a small, exceptionally strong engineering team with backgrounds including Cambridge and UCL, Jane Street and BloombergWork on a genuinely ambitious AI product tackling a huge, under-served problemOwn features across the entire stack rather than being confined to one areaWork at the cutting edge of AI-native software developmentHave significant influence over the technical direction and productOpportunity to become a technical leader and own major parts of the product as the company scalesBuild something from the ground up in a highly ambitious environmentWork closely with an exceptional designer and engineering team to create a product that is both technically excellent and beautiful If you’re an exceptional engineer who wants to work at the intersection of AI, financial modelling and high-performance software, with the opportunity to have genuine ownership and impact from day one, this is a seriously exciting opportunity. Interested? Apply now 🚀