Senior Backend AI Engineer – Contract

£600 – £625 per day
Outside IR35
Fully Remote – UK

We’re looking for an experienced Senior Backend AI Engineer to join a technical team building production-grade software with AI capabilities.

This is primarily a backend engineering role, rather than a pure AI/ML position. You’ll be responsible for designing and delivering reliable Python services while integrating modern LLM capabilities where appropriate.

You’ll have a high level of technical ownership and will be comfortable reviewing code, making engineering decisions and taking features through to production.

What We’re Looking For

• Strong commercial Python engineering experience

• FastAPI and asynchronous Python

• Experience building and supporting production APIs/services

• Strong approach to testing, typed code and maintainability

• Experience owning code quality and conducting senior-level code reviews

• AWS or similar cloud experience

• Terraform / Infrastructure as Code

• Comfortable with Docker and modern deployment practices

• Experience using AI-assisted development tools within engineering workflows

AI Experience

You’ll ideally have practical experience integrating LLMs into production applications, including some of:

• RAG

• LLM orchestration / agentic workflows

• Structured outputs

• LLM evaluation and testing

• Production AI integrations

Useful Additional Experience

Experience with any of the following would be beneficial:

• Kubernetes

• PostgreSQL

• Security-conscious or regulated environments

• Deploying software into complex customer environments

• React / TypeScript

• Working with sensitive data

We’re looking for someone who is fundamentally a strong senior backend engineer and has subsequently developed meaningful experience building with modern AI/LLM technologies.

£600-£625 per day | Outside IR35 | Fully Remote