Staff Software Engineer, AI (up to £200k)

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

This company runs a global tax automation platform, backed by leading investors, with significant ARR. They're tackling genuinely complex regulatory problems, a high-leverage domain for AI. Think multi-jurisdiction edge cases, deep structured compliance data, and real-time decisions for enterprise customers.

You'd join an early-stage AI initiative, shaping how LLMs and agentic systems are applied across the product. There's no entrenched AI org or pre-baked playbook. This isn't a research role disconnected from production; you'll build and ship, with a real mandate to embed AI into core engineering values.

The work

• Design the backend services powering new AI workflows across the platform.
• Optimise prompts and develop agent platforms for both internal and customer-facing applications.
• Build the evaluation pipelines that keep models honest and ensure accuracy in a high-stakes domain.
• Prototype intelligent workflows, natural language interfaces, and agent-driven experiences that simplify complex tax problems.

What You Bring

• 5+ years building customer-facing products at a high-quality software company, with end-to-end ownership.
• Deep, hands-on understanding of LLMs, prompt engineering, agent frameworks, and AI safety/security – production scar tissue, not lab time.
• Experience building RAG architectures in production and designing the evaluation pipelines that keep them honest.
• Strong product instincts combined with technical depth; you can argue for a model choice in commercial as well as accuracy terms.
• Comfort operating in ambiguity, experimenting quickly, and shipping iteratively in a domain that's still being defined.

Why apply through Dex

This is a rare Staff-level AI role with real production impact, not just research. Dex helps you cut through the noise: get properly briefed, skip cold applications, and get matched to this and other high-impact roles.

If you're interested, sign up to Dex to apply - https://jobs.meetdex.ai/jobs/7f9ec631-f17c-43eb-b5ec-6695c61caa2f

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