Senior AI Engineer at Cititec Talent

Build production-grade AI systems for enterprise clients. Core duties include designing LLM-powered applications, maintaining evaluation frameworks, optimizing prompts across model providers, and providing ongoing system support.

Key Responsibilities:

Implement LLM-powered systems with RAG pipelines and vector databases

Build maintainable AI applications with robust error handling

Develop evaluation frameworks for performance monitoring

Implement feedback loops for continuous improvement

Optimize prompts across model providers

Collaborate cross-functionally

Provide operational support

Required Skills:

Hands-on work with LLM APIs and understanding of their capabilities and limitations

AI architectures including RAG pipelines, vector/knowledge databases, and agentic frameworks

Multi-step workflow and agentic system development using frameworks like LangChain, LangGraph, Claude Agents SDK or custom solutions

Strong Python with production API development experience

Cloud platforms (AWS, GCP, or Azure)

Distributed systems, CI/CD pipelines

SQL, pandas, and AI output evaluation

Desirable:

AI-assisted coding tools (Claude Code, GitHub Copilot, OpenAI Codex)

LLM fine-tuning

Real-time streaming and multimodal models

Model observability platforms (LangSmith, Weights & Biases)

Tool-calling agents and guardrails

Contract: £600-700/day, Outside IR35, 6-month contract

Location: London, 3 days in office (hybrid)

Published: March 18, 2026, valid through April 15, 2026