Senior Python AI Developer

Requirements:

• Strong Python backend development skills and experience with FastAPI
• Practical experience developing Generative AI applications, including Agentic AI and LLM-powered solutions
• Experience with RAG architectures, prompt orchestration and vector search
• AWS cloud engineering experience, particularly with Bedrock and AgentCore
• Experience with RESTful APIs, microservices and distributed systems
• Experience with CI/CD pipelines, DevOps and automation
• Experience with LLM integration, evaluation and performance optimisation
• Experience with secure application development and observability
• Ideally, 8+ years of commercial experience and availability immediately or within four weeks
• Experience with Terraform, GitOps, Kong API Gateway, SQL/NoSQL databases, or AI evaluation tools such as Promptfoo or Arize would be useful
• Experience in financial services, insurance or another regulated environment would be beneficial

Responsibilities:

• Design and develop Python backend services and APIs using FastAPI
• Build Generative AI, Agentic AI and LLM-powered applications
• Develop RAG architectures, prompt orchestration and AI evaluation tooling
• Integrate LLMs with enterprise applications and business workflows
• Work with AWS services, including Bedrock, AgentCore, EKS, EC2, S3 and SQS
• Design CI/CD pipelines, automation and reusable microservices
• Support LLM benchmarking, performance monitoring and cost optimisation
• Integrate AI services with enterprise security and observability frameworks
• Collaborate with architects and platform engineers to deliver scalable AI solutions

Technologies:

• Agentic AI
• AI
• API
• AWS
• Backend
• CI/CD
• Cloud
• DevOps
• EC2
• FastAPI
• GitOps
• Support
• LLM
• NoSQL
• Python
• RAG
• SQL
• Security
• Terraform
• microservices

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Were recruiting two Senior Python AI Developers for a technology consultancy delivering enterprise-scale Generative and Agentic AI solutions for a major financial services client. These hands-on roles focus on building core services, features and capabilities for a secure, scalable, production-ready AI platform, alongside experienced AI engineers, architects and platform specialists. We offer permanent or contract positions, with permanent salaries of £60,000–£75,000 or a contract rate of approximately £475 per day. The role is based in London with hybrid working and three days per week onsite. Youll have the opportunity to build enterprise-scale AI applications and work with modern LLM technologies and AWS AI services.

last updated 43 week of 2026