AI & Emerging technologies

Staff Engineer - AI

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Cambridgeshire · Cambridgeshire · United Kingdom

Overview

In this Staff Engineer – AI role, you set and evolve the technical direction for AI-enabled products, leading end-to-end AI delivery from concept to production. You will guide architecture, establish best practices, and drive scalable, secure systems while collaborating with cross-functional teams. Your impact includes shaping responsible AI, evaluating trade-offs, and delivering high-quality AI experiences at scale. This is a chance to influence engineering strategy and contribute to a fast-paced, mission-driven tech culture.

Responsibilities
  • Set the technical direction and roadmap for AI engineering and AI-powered products.
  • Lead end-to-end AI delivery from concept to production, including architectural decisions and trade-offs.
  • Build production-grade AI systems (LLM-powered apps, RAG, vector search, tool calling, agentic workflows, context management).
  • Establish evaluation, observability, tracing, monitoring, and graceful degradation; ensure reliability in production.
  • Embed security, safety, governance, and compliance across the AI lifecycle; collaborate with InfoSec, Data Privacy, Legal, and AI Governance.
  • Influence engineering strategy across teams; participate in cross-team architectural reviews and decision-making; guide model/vendor selection.
  • Communicate trade-offs and risks to both technical and non-technical stakeholders; demonstrate architectural credibility and leadership.
Key requirements
  • Hands-on experience building production LLM applications.
  • Strong depth in RAG, vector search, tool calling, agentic AI systems, and context management.
  • Experience designing evaluation frameworks (offline and online) for AI outputs.
  • Ability to navigate model capability, grounding, latency, cost, observability, and reliability in production AI.
  • Understanding of AI safety, responsible AI risks, and production safeguards; familiarity with regulatory considerations.
  • Judgement and influence expected of a Staff Engineer; ability to lead across teams without formal management authority.
  • Strong technical judgment
  • Cross-team collaboration
  • Clear communication of architectural trade-offs
  • LLM applications in production
  • RAG (Retrieval-Augmented Generation)
  • Vector search

Reference: WJ-747_31180509

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