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AI Engineer

Sofia, Sofia City Province, Bulgaria🌐 Remote💼 Full-time🗓 2026-09-01 → 2026-09-25

Core

Design, train, and fine-tune TTS and STT models to power real-time conversational interaction for a health-tech product, ensuring low-latency, production-grade performance.

Role type

Senior IC machine-learning engineer (speech/audio)

Builds

Real-time voice and language layer for Brain Buddy

Domain

Health-tech, speech processing, conversational AI

Deliverable

production ML models

Required skills

TTS/STT model training and fine-tuning, adapting commercial/foundation models for production, low-latency inference architecture, modern ML frameworks (PyTorch/TensorFlow), cloud deployment optimization, large-scale distributed computing

Preferred skills

Experience with conversational quality evaluation methodologies, cost/performance inflection point planning

Technologies

PyTorch, TensorFlow

Responsibilities

Design and train TTS/STT models for real-time interaction, adapt commercial models for low-latency pipelines, improve model accuracy and scalability under load, build evaluation methodologies for speech quality, resolve inference bottlenecks, collaborate with product and infrastructure teams for deployment

Seniority

Senior, hands-on IC

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