Hybrid AI Engineer – Audio

at White Circle

• Job title: AI Engineer – Audio
• Job type: Full Time
• Experience level: Mid level, Senior
• Salary: $100,000 - $250,000 per year
• Degree requirement: No Education Requirement
• Tech skills: PyTorch
• Location requirements: Hybrid, Paris, France

About the role

• AI Engineer specializing in training audio and multimodal models for AI safety. Work at White Circle, focusing on production-ready solutions for AI systems.

Responsibilities

• Train and fine-tune large-scale audio and multimodal models from scratch and from pretrained checkpoints
• Design and run experiments: architecture changes, data mixes, training recipes
• Build and maintain audio data pipelines — from raw recordings to training-ready datasets
• Optimize models for production: quantization, distillation, streaming inference
• Deploy models end-to-end: from research checkpoint to low-latency serving
• Collaborate with research to turn experimental ideas into shippable features
• Define evaluation metrics and benchmarks that actually matter for the product

Requirements

• 3+ years of experience training large-scale deep learning models in audio, speech, or acoustic domains
• Strong hands-on experience with PyTorch, distributed training (DeepSpeed, FSDP, or similar)
• Familiarity with audio/speech architectures (Audio Qwen, Whisper, HuBERT, Conformer, or similar)
• Experience with vision-language and multimodal architectures (Audio Flamingo, Omni Qwen, or similar)
• Track record of shipping models to production: you've hit latency targets, not just accuracy benchmarks
• Comfortable working with large-scale audio data pipelines: preprocessing, augmentation, dataset curation
• Understanding of audio signal processing fundamentals: spectrograms, mel features, noise reduction
• Experience with SFT, DPO, GRPO or other alignment techniques — ideally in multimodal setting
• Strong engineering fundamentals: clean code, version control, testing, documentation

Benefits

• 20 days of paid vacation
• Work from Paris (hybrid) + relocation package
• Best medical insurance in France
• All the hardware, tools, and services you need
• Covered subscriptions for AI agents and IDEs
• Team off-sites twice a year: we’ve recently been to the Alps and to Saint-Tropez