Oscar Technology
Senior Voice AI Engineer – Contract (Outside IR35) | £350-500/day | 3-4 months | Remote
We're looking for a hands-on engineer to take an existing voice AI proof-of-concept and turn it into a reliable, production-grade system ready for real users.
The prototype works – but it now needs to be made fast, stable, scalable, and cost-efficient.
What you'll be doing: – Productionising a voice AI system from an existing PoC – Working with voice platforms such as ElevenLabs / Deepgram (or similar) – Improving real-time performance and reducing latency – Designing lightweight orchestration (simple, deterministic flows over complex prompt chains) – Integrating customer/internal data using RAG approaches – Optimising cost, reliability, and system efficiency – Building and maintaining API/SDK-based voice pipelines – Supporting secure handling of sensitive/PII data
What we're looking for: – Strong experience building voice AI or real-time speech systems – Hands-on experience with speech-to-text and text-to-speech APIs – Proven ability to deliver production-grade AI systems – Good understanding of latency and performance optimisation – Experience with RAG and data-driven AI architectures – Strong API integration skills and practical engineering mindset – Comfortable working with sensitive data in production contexts
If this sounds like a strong fit, drop me a message.
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