Senior Python AI Engineer - Production GenAI (Hybrid)

GCS Recruitment; Greater London; Hybrid; GBP 111,000 - 185,000; Full time

Job summary

GCS Recruitment is seeking a Senior AI / Python Engineer to join a technology team building a new generation of intelligent, data-driven applications. This is a hands-on role combining Generative AI development with strong Python software engineering, taking AI capabilities beyond prototypes into production.

You will work across the full engineering lifecycle, designing, developing and supporting AI-enabled products and backend services.

Qualifications

• Extensive hands-on Python experience in large-scale production systems.
• Proven ability to design and deploy AI-enabled products in production.
• Strong experience with FastAPI, Pydantic and asynchronous Python.
• Expertise with LLMs, Generative AI, and AI agents.
• Experience with embedding, vector-search and semantic retrieval.
• Solid knowledge of Docker, Kubernetes and modern CI/CD.
• Ability to design robust APIs and microservices.
• Experience with automated testing and engineering best practices.

Responsibilities

• Building production applications and services using Python
• Developing solutions using LLMs and Generative AI
• Creating RAG and semantic retrieval solutions over structured and unstructured information
• Developing intelligent workflows using AI agents and orchestration frameworks
• Building scalable backend APIs using FastAPI
• Implementing document processing, embedding and vector-search capabilities
• Connecting AI services with existing applications, databases and data sources
• Creating methods for testing and measuring the quality of AI-generated outputs
• Containerising and deploying applications into modern cloud environments
• Writing clean, maintainable and well-tested software
• Working closely with product, engineering and business stakeholders to deliver solutions into production

Skills

Python

FastAPI

Pydantic

Asynchronous Python

LLMs / Generative AI

RAG

AI agents

Embeddings & semantic search

Vector databases

PostgreSQL

Docker

Kubernetes

CI/CD

API & microservices

Automated testing

Software engineering best practices

Tools

FastAPI

Pydantic

Docker

Kubernetes

PostgreSQL

CI/CD

Job description

GCS Recruitment is seeking a Senior AI / Python Engineer to join a technology team building a new generation of intelligent, data-driven applications. This is a hands-on role combining Generative AI development with strong Python software engineering, taking AI capabilities beyond prototypes into production.

You will work across the full engineering lifecycle, designing, developing and supporting AI-enabled products and backend services.