Production AI Engineer—RAG, Agents & Scalable Backend

Dex; Greater London; On-site; GBP 90,000 - 150,000; Full time

Job summary

Dex partners with enterprise clients to build and deploy immune AI-powered features within regulated platforms. You will own the end-to-end development of production AI capabilities, including RAG pipelines, multi-agent orchestration, and robust monitoring, deployed across secure enterprise systems.

You’ll lead backend implementations in Python (Django/FastAPI), design scalable data pipelines, and mentor junior engineers while ensuring reliability and performance at scale.

Qualifications

• 5+ years of professional software engineering experience.
• Production AI experience with RAG pipelines and agent orchestration.
• Expert in Python backend (Django/FastAPI) and relational DBs.
• Experience in cloud, Docker, Kubernetes, CI/CD.
• Knowledge of LLM evaluation for accuracy and safety.

Responsibilities

• Develop and deploy production-grade AI features with RAG and agents.
• Build backend services and APIs for AI applications.
• Design data pipelines for training and evaluation.
• Ensure scalability, performance, and security across stack.
• Mentor junior engineers and contribute to team growth.

Skills

Production systems

AI applications

LLM evaluation

Python backend

Docker & Kubernetes

CI/CD

Relational databases

Team mentoring

Tools

Docker

Kubernetes

CI/CD pipelines

PostgreSQL

Job description

Dex partners with enterprise clients to build and deploy immune AI-powered features within regulated platforms. You will own the end-to-end development of production AI capabilities, including RAG pipelines, multi-agent orchestration, and robust monitoring, deployed across secure enterprise systems.

You’ll lead backend implementations in Python (Django/FastAPI), design scalable data pipelines, and mentor junior engineers while ensuring reliability and performance at scale.