Dex
AI Engineer (up to £300k)
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The Role
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.
About the Role
Every major business decision relies on financial models. Yet, building them is one of the worst-tooled forms of programming. This company is reinventing how businesses make their biggest decisions, starting with an AI add-in for complex financial modelling. Their long-term vision: build the AI operating system for the entire strategic decision lifecycle – a new category with a $100bn+ opportunity. This is a small, elite engineering team, with backgrounds from Jane Street, Bloomberg, Cambridge, and UCL.
You'll join this lean team as an AI Engineer, focused on making their core AI agent smarter. This isn't about 'vibe coding' or dabbling with AI tools. This is about deeply understanding and leveraging the latest models, improving agent harnesses, and owning the full lifecycle from data collection to SFT and RL. You'll ship high-quality code at speed, with a clear path to technical leadership and significant ownership of the AI roadmap.
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The Work
- Ship high-quality code at speed, leveraging the latest AI models and tools. This means deep expertise in prompting, model selection, and practical application (e.g., Claude Code, Cursor).
- Enhance the core AI agent's intelligence by refining its harness, tools, and context optimization.
- Own the full AI lifecycle: from designing evaluation pipelines and collecting data to implementing Supervised Fine-Tuning (SFT) and Reinforcement Learning (RL).
- Collaborate closely with product design to ensure every AI-powered feature is intuitive and visually consistent.
- Drive significant parts of the AI roadmap, with a clear path to technical leadership within a rapidly evolving product.
What You Bring
- Unquestionable evidence of being a top-tier engineer. This is non-negotiable.
- Hands-on experience building your own AI agents, including practical application of concepts like MCP, skills, and hooks.
- A high degree of agency and determination; you thrive on solving complex problems autonomously.
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This is a full-time, 5-day-a-week, in-person role based in Hoxton, London.
Why Apply Through Dex
This is a rare, high-impact AI engineering role that won't be openly advertised. Apply through Dex to cut through the noise, get a full brief on the company and role, and ensure your application stands out. We help you skip the cold-apply process and get directly in front of the hiring team for opportunities like this.
If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/16d686ad-b3d0-4f9c-959d-5a3ee5774f49
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