AI Systems Engineer (Python / LLM / Workflows) | Contract | London | 3 days onsite

Outside IR35

6-12 month engagement

We’re hiring engineers to build a production AI workflow system for a major UK business.

This is not feature work.

This is designing and shipping end-to-end AI systems that operate under real-world constraints.

If you’ve built real AI systems in production, not just wrapped APIs, we should talk.

The Role

You’ll be embedded in a fast-moving team building an agentic workflow system from scratch.

At a high level, we are:

• Ingesting high-volume, real-time data
• Enriching it using LLMs and internal services
• Orchestrating workflows across multiple systems
• Routing outputs through human approval and publishing layers

The core stack includes:

• n8n as the orchestration layer
• Slack as the primary interface (bot / Block Kit)
• WordPress as the CMS / system of record
• AWS (Bedrock, Lambda, Secrets Manager) underneath

This is a systems problem, not a single-service build.

You’ll be responsible for both:

• Designing how the system works
• Building and shipping it into production

What You’ll Need

• Strong Python (core requirement)
• Experience building LLM-powered systems in production
• Hands-on RAG / retrieval pipelines (chunking, embeddings, retrieval logic)
• Solid AWS experience (Lambda, Secrets, infra patterns)
• Strong API / integration experience across messy systems
• Comfortable working with event-driven workflows and orchestration

Strong Signals

• You’ve built and owned end-to-end systems, not just components
• You understand failure modes, retries, and observability
• Experience with n8n, Temporal, or similar orchestration tools
• Experience integrating Slack (bots / Block Kit) or similar interfaces
• You’ve worked with vector databases / embedding pipelines

What Separates Great Candidates

• You’ve shipped AI systems that people actually use
• You think in systems, not endpoints
• You’re comfortable with ambiguity and moving fast
• You take ownership and push things forward without being told

Details

London (3 days onsite)

Contract

⚡ Immediate start

Outside IR35

6-12 month engagement

Multiple hires across mid → tech lead level.

Apply

Drop me a message or apply below