Senior ML Engineer - Lead Scaled Language Models

Prosus; Amsterdam; Hybrid; EUR 120,000 - 170,000; Full time

Benefits offered by this job

Hybrid work model

MacBook Pro

Competitive compensation

Job summary

Prosus is seeking a Senior Machine Learning Engineer to train domain-specific language models and provide technical leadership. You will own critical training infrastructure, mentor engineers, and drive decisions from data prep to production deployment.

You thrive on hands-on model training at scale and delivering impact for millions of users. You will lead experiments, optimize training and inference through distribution frameworks, and shape model architectures and data strategies in a

Qualifications

• 7+ years of ML engineering experience.
• Technical leadership: mentoring engineers, code reviews, architecture decisions.
• Proven experience training and deploying language models to production at scale.
• Experience preparing large-scale training datasets and data curation strategies.
• Hands-on experience with distributed training frameworks and multi-node orchestration.
• Strong understanding of training dynamics, learning rate schedules and stability.
• Expert Python and PyTorch with production experience using Transformers, DeepSpeed, Accelerate.

Responsibilities

• Analyze model performance and training data to guide experiments and improve quality and efficiency.
• Lead architecture decisions for model training strategies and infrastructure.
• Provide mentorship, conduct code reviews, and share best practices across the team.
• Train large language models through pre-training and fine-tuning on proprietary datasets.
• Build and optimize distributed training infrastructure across multi-node GPU clusters.

Skills

ML engineering

Technical leadership

Python

PyTorch

Experimentation

Mentoring engineers

Code reviews

Tools

DeepSpeed

FSDP

Megatron-LM

Axolotl

Transformers

DeepSpeed

Accelerate

vLLM

TensorRT-LLM

Job description

Prosus is seeking a Senior Machine Learning Engineer to train domain-specific language models and provide technical leadership. You will own critical training infrastructure, mentor engineers, and drive decisions from data prep to production deployment.

You thrive on hands-on model training at scale and delivering impact for millions of users. You will lead experiments, optimize training and inference through distribution frameworks, and shape model architectures and data strategies in a