AI & Data Engineer

AI & Data Engineer Remote (UK-based) | Full-Time About Us Reactive Markets is the 2026 OTC Trading Platform of the Year ( Risk.net ). Our network handles over $50 billion in daily trading volumes across FX, Equities, and Cryptocurrency, connecting 40+ of the world's leading liquidity providers. We build trading systems that operate at the edge of what's technically possible — where nanoseconds matter and a dropped message costs real money. Our engineering team is small, senior, and deeply invested in the craft of building cutting edge, reliable, high-performance systems. The Role We're looking for a full-stack engineer who can build AI-powered tools and data infrastructure that make our platform smarter, our people more effective, and our operations more scalable. This is not a research role. You'll build real systems that people use every day — Slack bots that investigate production incidents, data pipelines that surface anomalies before clients notice them, and AI agents that turn hours of manual trawling into seconds of guided investigation. You'll work across the full stack: Python and TypeScript for AI tooling and integrations, Go for backend services, and SQL for data analysis and pipeline work. The person we're looking for ships working software, cares about making people's lives easier, and is energised by the pace of the AI landscape. You don't need to have built LLM applications before — but you should be curious, practical, and comfortable learning fast. You'll work closely with our TechOps, Connectivity, and Data teams to understand their workflows, pain points, and knowledge gaps — then build the tools and infrastructure that solve them. This is a high-leverage role: the systems you build will multiply the effectiveness of every engineer and operator in the company. What You'll Work On AI-powered investigation tools — Slack-based bots and agents that automatically analyse support tickets, query production logs, and surface relevant context for incident