Senior Machine Learning Engineer - Large Language Models (Contract)

botify tech Spain
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AI Summary

Botify Tech is seeking a Senior Machine Learning Engineer with expertise in Large Language Models (LLMs) for a contract position in Barcelona. The ideal candidate will have hands-on experience with model compression, deployment, and operation of ML models at scale. The role involves designing and leading the evaluation strategy for Agentic AI and RAG systems.

Key Highlights
Design and lead the evaluation strategy for Agentic AI and RAG systems
Hands-on experience developing or training transformer-based LLMs from scratch
Participate in code reviews and maintain code quality, readability, and consistency
Technical Skills Required
Transformer architecture Model compression or optimization techniques Batch and real-time use cases Python Machine Learning frameworks
Benefits & Perks
€55,000 - €80,000 salary
Signing Bonus
Relocation is mandatory (Barcelona)
Hybrid work arrangement

Job Description


Senior Machine Learning Engineer - LLMs (Contract)

HYBRID - Barcelona (RELOCATION IS MANDATORY)


€55,000 - €80,000 + Signing Bonus


Botify Tech has partnered with one of the TOP AI businesses Globally, they are on the lookout for a Senior Machine Learning Engineer with a strong background within LLM's.


Key Skills & Experience Required

  • Proven use of model compression or optimization techniques
  • Hands-on deployment, production, and operation of Machine Learning models and pipelines at scale, including both batch and real-time use cases.
  • Design and lead the evaluation strategy for our Agentic AI and RAG systems, turning customer workflows and business needs into measurable metrics and clear success criteria.
  • Hands-on experience developing or training transformer-based LLMs from scratch
  • Participate in code reviews, offering thoughtful, constructive feedback to maintain code quality, readability, and consistency.
  • Deep familiarity with transformer architecture, training pipelines, and experimentation
  • Define and monitor operational metrics (latency, cost, reliability) to ensure evaluations align with production and customer expectations.
  • Work with the analytics team & stakeholders to understand their objectives in support of formulating, optimizing, and productionising ML models
  • Contribute to expanding and improving the infrastructure to support all stages of the ML model lifecycle and deployment in a production environment.
  • 3 years of commercial experience delivering projects end-to-end


For more info

Email me at pinto@botifytech.com


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