Senior Software Engineer

This role is with one of Dex's trusted partner companies. We work closely with their teams to truly understand their culture, goals, and what they're looking for, so we can match you with the right opportunity and give you context about the role before you commit to a process. If you're interested sign up to Dex to apply. Dex is an AI recruiter agent that helps you run your job search. Tell Dex your stack, seniority, and what you want to build. We will manage your applications and surface other opportunities that are a fit. The role Businesses make critical decisions based on financial models. Yet, the tools for building these models are decades behind, making financial modelling one of the worst-tooled forms of programming. This company is fixing that, building an AI operating system for strategic decision-making, starting with an AI add-in for complex financial modelling in Excel. This is a multi-billion dollar opportunity, tackled by a small team of top-tier engineers from leading institutions and tech firms. You'll join a lean, high-calibre engineering team, building a foundational product that redefines how companies operate. This isn't a role where you'll just use AI; you'll be building with AI, leveraging the latest models and tools to ship high-quality code at speed. You'll own features end-to-end, from Rust services to frontend, with significant scope to shape the product and become a technical leader. The work Ship high-quality code at speed, leveraging the latest AI models and tools. This means deep expertise in prompting, model selection, and AI-assisted development.Own features end-to-end, from Rust services and backend infrastructure to the frontend experience.Optimise for performance: write fast software, remove allocations, aggressively cache, and fine-tune queries.Enhance the core AI agent by improving its harness, tools, and context management.Contribute to backend and infrastructure reliability, including low-level bug fixes and CI/CD optimisation. What You Bring A demonstrable track record as a top-tier engineer, evidenced by significant impact and technical depth.Proven expertise in AI-driven development: you don't just use AI, you master it for coding, prompting, and model selection.High agency and determination to tackle complex problems and drive solutions independently.Ability to work 5 days a week, in person, from the Hoxton (London) office. Why apply through Dex This is a rare role at a company solving a fundamental problem with AI. Skip the noise of cold applications and get properly briefed on the opportunity. Dex helps you cut through to roles like this, ensuring your profile stands out to the right hiring teams. If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/f1e765e0-69b7-458e-a4dc-35080394d02c As part of the recruitment process at Dex, we process your personal data in accordance with our Privacy Notice for Job Applicants. This notice explains how and why your data is collected and used, and how you can contact us if you have any concerns.