Senior Machine Learning Engineer

Grid Dynamics; Santander; Presencial; EUR 60.000 - 100.000; Jornada completa

Descripción de la vacante

Grid Dynamics en Cantabria, Santander, busca un Ingeniero Senior de Machine Learning especializado en sistemas LLM y evaluación para impulsar proyectos de ML de extremo a extremo.

Deberá diseñar metodologías de evaluación, crear benchmarks y mejorar sistemas basados en LLM, incluidos RAG, agentes y productos de IA enfocados en la seguridad, colaborando con equipos multifuncionales.

Formación

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Responsabilidades

• Dirigir proyectos de ML desde el problema hasta la implementación
• Diseñar y aplicar metodologías de evaluación para sistemas de IA y ML
• Crear conjuntos de datos, benchmarks y métricas para medir rendimiento
• Evaluar y mejorar sistemas basados en LLM, incl. RAG, agentes y productos de IA
• Analizar comportamientos de modelos, identificar fallos y proponer mejoras
• Construir y mantener pipelines de ML, herramientas e infraestructura de evaluación
• Colaborar con equipos de producto, ingeniería e investigación para traducir objetivos empresariales en métricas ML
• Prototipar e iterar rápido para resolver retos de negocio y producto; comunicar hallazgos y trade-offs a stakeholders

Conocimientos

Python

ML Engineering

LLMs

PyTorch

TensorFlow

RAG

Herramientas

Python

PyTorch

TensorFlow

JAX

Hugging Face

Descripción del empleo

Descripción del trabajo

We are looking for a talented Senior Machine Learning Engineer - LLM Systems & Evaluation.

This is an opportunity to work on next-generation AI systems, including large language models, retrieval-augmented generation, agents, and AI safety-focused evaluation.

Essential functions:

• Own machine learning projects from problem definition through implementation
• Design and implement evaluation methodologies for AI and machine learning systems
• Create datasets, benchmarks, and metrics to measure model and product performance
• Evaluate and improve LLM-based systems, including RAG applications, agents, safety systems, and end-to-end AI products
• Analyse model behaviour, identify failure modes, and recommend practical improvements
• Build and maintain ML pipelines, tooling, and evaluation infrastructure
• Collaborate with product, engineering, and research teams to translate business goals into measurable ML objectives
• Prototype and iterate rapidly to solve business and product challengesCommunicate findings, trade-offs, and recommendations to both technical and non-technical stakeholders

Qualifications:

• 5+ years of experience in Machine Learning Engineering or a related field.
• Strong understanding of machine learning fundamentals and model evaluation
• Strong Python programming skills and experience with modern ML frameworks such as PyTorch, TensorFlow, or JAX
• Understanding of retrieval-augmented generation (RAG), agentic systems, and LLM safety concepts
• Experience training, fine-tuning, or adapting machine learning models
• Experience working with Large Language Models beyond simple API integration
• Experience evaluating AI systems and translating results into actionable recommendations
• Experience building and maintaining machine learning systems and pipelines
• Ability to work effectively in ambiguous problem spaces with incomplete requirements and limited data
• Strong written and verbal communication skills

Would be a plus:

• Experience designing benchmarks, evaluation frameworks, or automated evaluation systems
• Experience with distributed training or large-scale model inference
• Experience building reusable ML tooling and internal platforms
• Experience with cloud platforms and modern MLOps practices
• Experience working on user-facing AI products at scale
• Research experience or publications in machine learning or AI-related fields