AI Full Stack Engineer

Company: Randstad Technologies
Apply for the AI Full Stack Engineer
Location: London
Job Description:

Job Overview



  • Role: AI Full Stack Engineer (AI & ML Engineer)


  • Location: Fenchurch Street, London


  • Duration: Oct 12, 2026 – Dec 15, 2026 (9 Weeks, 2 Days)


  • Hours: 40 hours/week


  • Rate: 291 PAYE / 388 Umbrella



Core Technical Stack



  • Programming & APIs: Python, RESTful API development, JSON Schema, Pydantic.


  • AI & LLMs: Gemini, OpenAI, Claude.


  • Frameworks & Orchestration: Google ADK, LangChain, LangGraph.


  • Data & Search: AWS OpenSearch (Indexing and Vector embeddings – Highly emphasized), Database Architecture (Intermediate).


  • Infrastructure: Public Cloud (GCP, AWS, or Azure), containerization, CI/CD pipelines.



Key Responsibilities



  • Agentic Systems: Build multi-agent, stateful, and asynchronous workflows.


  • LLM Management: Handle prompt engineering, context/memory management, hallucination controls, guardrails, and fallback logic.


  • Observability: Implement tracing and evaluation frameworks, specifically utilizing LLM-as-a-Judge patterns.


  • Backend Engineering: Develop secure Python APIs and maintain strong testing and deployment disciplines.


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Posted: October 3rd, 2026