AI Full Stack Engineer
Job Overview
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Role: AI Full Stack Engineer (AI & ML Engineer)
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Location: Fenchurch Street, London
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Duration: Oct 12, 2026 - Dec 15, 2026 (9 Weeks, 2 Days)
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Hours: 40 hours/week
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Rate: 291 PAYE / 388 Umbrella
Core Technical Stack
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Programming & APIs: Python, RESTful API development, JSON Schema, Pydantic.
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AI & LLMs: Gemini, OpenAI, Claude.
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Frameworks & Orchestration: Google ADK, LangChain, LangGraph.
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Data & Search: AWS OpenSearch (Indexing and Vector embeddings - Highly emphasized), Database Architecture (Intermediate).
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Infrastructure: Public Cloud (GCP, AWS, or Azure), containerization, CI/CD pipelines.
Key Responsibilities
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Agentic Systems: Build multi-agent, stateful, and asynchronous workflows.
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LLM Management: Handle prompt engineering, context/memory management, hallucination controls, guardrails, and fallback logic.
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Observability: Implement tracing and evaluation frameworks, specifically utilizing LLM-as-a-Judge patterns.
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Backend Engineering: Develop secure Python APIs and maintain strong testing and deployment disciplines.
If interested kindly email me your updated CV to .
Randstad Technologies is acting as an Employment Business in relation to this vacancy.