Junior Developer – AI Agent Engineer

Junior Developer – AI Agent Engineer – 3 month initial contract – £350 – £390 per day (via umbrella) – London – Hybrid

Our eCommerce client is looking for a Junior Developer (AI Agent Engineer) to join their team on an initial 3 month contract. You will work on the design, development and optimisation of AI and agentic applications, that enhance productivity, streamline services and enrich web development.

Key responsibilities:

• Work on the development and optimisation of AI applications and agentic tools




• Use Claude Code as an AI-powered coding assistant in your daily workflow




• Maintain documentation for agent design, logic, inputs/outputs and monitoring processes




• Support ongoing monitoring of technology performance, identifying risks and opportunities for improvements

Experience:

• Experience using tools such as LangGraph, CrewAI, or Autogen to manage state, memory and routing between multiple Claude agents




• Strong knowledge of Claude specific features, such as Tool Use (Function Calling), prompt caching to save costs and optimising context windows




• Proficiency in Python or TypeScript to connect Claude to external databases, vector stores (Pinecone or ChromaDB) and external enterprise API’s




• Good understanding of system resilience – the ability to implement fallback mechanisms, error handling and structures outputs (JSON formatting)




• A degree in Computer Science would be advantageous

If you feel you have the experience required, then please do apply!

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