Senior AI Engineer - Remote EU, Build Multi-Agent LLMs

Cubiq Recruitment; Remote; GBP 80,000 - 100,000; Full time

Job summary

A technology recruitment firm is seeking a Senior/Staff AI Engineer to lead the development of a core voice-enabled AI system. This role offers real ownership of system architecture and immediate production impact. Ideal candidates will have expertise in Python, FastAPI, and multi-agent frameworks, alongside a startup mindset. The position supports remote work across Europe, with optional co-working spaces in London or Barcelona. Join a dynamic team and make a real-world impact in applied AI.

Qualifications

• Proven ability to build and ship agentic or multi-agent frameworks into production.
• Practical experience with LangChain, Autogen, or custom orchestration layers.
• Startup mindset: ownership, speed, and pragmatism over perfection.

Responsibilities

• Design, implement, and productionise multi-agent LLM systems that reason, plan, and coordinate.
• Develop FastAPI-based microservices optimised for low latency and high reliability.
• Engineer and evaluate RAG pipelines: hybrid retrieval, re-ranking, grounding, and context validation.
• Integrate real-time voice interfaces into intelligent conversational flows.
• Instrument and evaluate system performance using observability and model-faithfulness metrics.

Skills

Expert Python

FastAPI

asyncio

Multi-agent frameworks

Low latency optimization

Real-time voice integration

Job description

A technology recruitment firm is seeking a Senior/Staff AI Engineer to lead the development of a core voice-enabled AI system. This role offers real ownership of system architecture and immediate production impact. Ideal candidates will have expertise in Python, FastAPI, and multi-agent frameworks, alongside a startup mindset. The position supports remote work across Europe, with optional co-working spaces in London or Barcelona. Join a dynamic team and make a real-world impact in applied AI.