AI Research Engineer - Distributed Training / LLMs

We are partnered with a cutting‑edge AI safety startup that is building the foundational reliability and optimization layer for advanced AI systems capable of managing hundreds of millions of API calls monthly and training proprietary LLMs and VLMs that outperform commercial and open‑source models. They are seeking a highly focused AI Research Engineer to tackle complex, production‑critical training challenges.

This is a permanent opportunity based in Paris, France.

Key Responsibilities for this AI Research Engineer position:

• Train LLMs and VLMs using advanced distributed training frameworks (e.g., Megatron, DeepSpeed).
• Design and implement next‑generation architectures, including Mixture‑of‑Experts (MoE), to achieve high‑efficiency scaling.
• Build and maintain complex multimodal training pipelines that effectively handle text, images, and audio data.
• Develop custom Triton kernels to identify and optimize training and inference bottlenecks.
• Drive innovation by exploring new model architectures, hyperparameter strategies, and dataset compositions.
• Focus intensely on maximizing hardware throughput and ensuring training stability and convergence.

Key Requirements:

• Deep understanding of distributed training concepts: tensor parallelism, pipeline parallelism, expert parallelism, ZeRO, and FSDP.
• Ability to write Triton kernels to accelerate custom operators or fundamental layers like attention and MLP.
• Experience working with multimodal systems (e.g., Llava‑style, Flamingo‑style).

Keywords: AI Research Engineer / LLM / Large Language Models / VLM / Vision‑Language Models / Distributed Training / Megatron / DeepSpeed / Triton Kernels / Multimodal AI / Mixture‑of‑Experts / MoE / FSDP / ZeRO / AI Safety / Paris / Optimization / Hardware Throughput

Seniority level: Mid‑Senior level; Employment type: Full‑time; Job function: Engineering and Design; Industries: Software Development and Research Services.

If you are interested in this AI Research Engineer position, please send a copy of your CV to

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