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Church International Limited

Machine Learning Engineer

Church International Limited
Belgium · Contract · Associate

Senior Voice AI Engineer

Brussels | Hybrid | 50% on site, 50% remote

Freelance 12-month contract) Start: July 2026


We’re looking for a Senior Voice AI Engineer to help build a real-time, client-facing Voice Bot for a major enterprise client in the financial services sector.


You’ll join a team of AI Dev Engineers and Data Scientists delivering a production-grade hybrid speech system combining open-source ASR/TTS/VAD models with vendor APIs, optimised for low latency, reliability, and conversational quality.


Roles & Responsibilities

  • Build end-to-end streaming voice pipelines (audio → VAD → STT → LLM orchestration → TTS)
  • Own real-time conversation behaviour: turn-taking, barge-in / interruption handling, end pointing & silence tuning
  • Design resilient streaming systems (retries, backpressure, fallback strategies)
  • Collaborate with Data Scientists on production-ready ML model integration
  • Contribute to CI/CD, Dockerisation, testing, and deployment of ML services
  • Support monitoring, evaluation, and lifecycle management of speech models


Skills & Qualifications

  • 4+ years engineering experience, including 2+ years in production speech / voice AI systems
  • Strong Python (Go/Rust/C++ a plus)
  • Experience with streaming audio systems and real-time ML pipelines
  • Familiarity with ASR/TTS stacks (e.g. Whisper, NeMo, wav2vec2)
  • Experience with Docker, CI/CD (GitLab CI), PostgreSQL, and production ML deployment
  • Strong understanding of latency (p95), WER evaluation, and conversational KPIs
  • Experience in regulated environments (banking, insurance, healthcare)
  • English required (French/Dutch a plus)


This is a hands-on role building real-time conversational AI systems at scale, where performance, latency, and reliability directly shape customer experience.


👉 Interested? Apply or reach out directly to [email protected]

Key Skills

Ranked by relevance

ai cicd postgresql gitlab ci python docker gitlab
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Posted
Jun 17, 2026
Type
Contract
Level
Associate
Location
Brussels

Industries

IT Services IT Consulting

Categories

Information Technology

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