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. If interested kindly email me your updated CV to dona. thomas@ randstaddigital. com. Randstad Technologies is acting as an Employment Business in relation to this vacancy