Descripción del puesto
We're looking for a Multimodal ML Engineer to join White Circle, an AI Safety company building the policy enforcement and optimization layer for AI systems. Backed by $11M from senior leaders at OpenAI, Anthropic, HuggingFace, Mistral, and DeepMind, White Circle processes 100M+ API calls monthly and runs its own LLMs in production.
You will
Train and fine-tune large-scale multimodal models (vision-language, audio, speech, video) from scratch and from pretrained checkpoints.
Design experiments, build multimodal data pipelines, and train MoE architectures.
Build alignment pipelines (SFT, DPO, GRPO), optimize for production (quantization, distillation, streaming), and deploy end-to-end.
Define evaluation metrics that actually matter for the product.
Requirements
3+ years training large-scale multimodal models.
Strong PyTorch and distributed training experience (DeepSpeed, FSDP).
Deep familiarity with multimodal architectures – LLaVA, Qwen-VL, InternVL, Audio Flamingo, Whisper, HuBERT, Conformer or similar.
Hands-on RLHF/alignment across modalities (GRPO, DPO, reward modeling).
Both audio and video experience required – sequence modeling for each, plus large-scale dataset curation and production inference optimization.
Relocation to Paris or London (hybrid) required.
Bonus
Audio signal processing fundamentals – spectrograms, mel features, noise reduction.
MoE architecture experience.
We offer
$100k–$250k/year salary + equity; higher figures can be negotiated.
Official employment, visa and relocation help.
Compensation: $100K – $250K • Higher figures and equity are negotiable
- • $100K – $250K • Higher figures and equity are negotiable
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Cómo postular
Sobre Npv
Npv
Paris
Preguntas frecuentes
Where is the Multimodal ML Engineer position at Npv located?
The Multimodal ML Engineer role at Npv is based in Paris.
What type of employment is the Multimodal ML Engineer role at Npv?
This Multimodal ML Engineer position is offered as Full Time.
What skills are needed for the Multimodal ML Engineer role at Npv?
Key skills and focus areas for this role include White Circle.
How do I apply for the Multimodal ML Engineer position at Npv?
You can apply for the Multimodal ML Engineer role at Npv directly from this page. Create a professional, ATS-ready resume with Clever CV to strengthen your application before you apply.