Principal AI Platform Architect - Multi-Agent & LLM Systems

Winston Fox; Greater London; On-site; GBP 450,000 - 550,000; Full time

Job summary

Winston Fox in London seeks a prolific Lead AI Engineer / Technical Lead to shape an enterprise-scale AI platform for a top UK hedge fund. This production-focused role requires world-class software engineering, architecture, and AI orchestration to advance LLMs, agent-based workflows, and autonomous pipelines in a production investment environment.

You will influence platform evolution, raise engineering standards, and drive measurable business value through cutting-edge AI capabilities.

Qualifications

• Proven track record building production AI platforms.
• Experience designing large-scale distributed AI systems with measurable impact.
• Deep expertise in LLMs, AI agents, retrieval systems and orchestration.

Responsibilities

• Architect and build enterprise-scale AI platforms and production applications.
• Design multi-agent systems, orchestration frameworks and reusable AI capabilities.
• Partner with teams to identify AI opportunities to improve research and decision-making.
• Provide technical leadership across complex initiatives and platform evolution.
• Improve shared AI platform, tooling and developer experience.
• Evaluate emerging technologies and productionise those with competitive advantage.
• Establish best practices for observability and production operations.

Skills

Large-scale systems design

LLMs / AI agents

Python

C#

Java

Go

GenAI architectures

Observability

Tools

LangChain

LlamaIndex

Claude Code

Aider

MLflow

Vector Databases

Docker

Kubernetes

Airflow

Dagster

DBT

Job description

Winston Fox in London seeks a prolific Lead AI Engineer / Technical Lead to shape an enterprise-scale AI platform for a top UK hedge fund. This production-focused role requires world-class software engineering, architecture, and AI orchestration to advance LLMs, agent-based workflows, and autonomous pipelines in a production investment environment.

You will influence platform evolution, raise engineering standards, and drive measurable business value through cutting-edge AI capabilities.