Prompt Engineer / LLM Engineer

AutoThink Group; Rochdale; Hybrid; GBP 45,000 - 65,000; Full time

Job summary

AutoThink Group in Rochdale, United Kingdom, is seeking an experienced software engineer to build production prompts and agent loops across multiple product lines, ensuring reliable prompt behavior in production.

You will design evaluation datasets to quantify quality per feature, create structured-output pipelines with strict schema conformance, and automate regression detection on every prompt change.

Qualifications

• 3+ years software engineering experience.
• Deep intuition for what LLMs can and can't do — from production work.
• Fluent in Python or TypeScript.
• Rigorous about evaluation, not just vibes.
• Right to work in the UK.

Responsibilities

• Build production prompts and agent loops across multiple product lines.
• Create evaluation datasets that quantify quality per feature.
• Develop structured-output pipelines with reliable schema conformance.
• Automate regression detection on every prompt change.

Skills

Python

TypeScript

Software engineering

Production experience

Job description

You obsess over the exact instructions we give to models — and the data we retrieve for them, and the evaluations we grade them with. You know when to prompt, when to fine-tune, and when to redesign the workflow.

What you'll build

• Production prompts and agent loops across multiple product lines.
• Evaluation datasets that quantify quality per feature.
• Structured-output pipelines with reliable schema conformance.
• Automation to detect regressions on every prompt change.

Requirements

• 3+ years software engineering.
• Deep intuition for what LLMs can and can't do — earned in production.
• Fluent in Python or TypeScript.
• Rigorous about eval, not just vibes.
• Right to work in the UK.