Senior LLM Engineer – Multimodal Audio & Voice AI

Harnham invites applications for a Senior AI Engineer to build production-grade LLM systems and shape a new AI Lab focused on next-generation AI-powered consumer experiences. You will work in a small, high-autonomy team inside a global organisation, collaborating with engineering, product and design on greenfield AI systems.

The role covers tuning tone and output quality, building retrieval and RAG workflows, developing audio-first products with TTS/STT, and shaping evaluation frameworks for

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