Senior ML Engineer, Search & Personalization - Hybrid

Dow Jones & Co.; Barcelona; Híbrido; EUR 90.000 - 120.000; Jornada completa

Ventajas ofrecidas por este puesto de trabajo

Healthcare plans

Remote work (Hybrid Barcelona)

Meal benefit with Pluxee

Pension plan with company match

Descripción de la vacante

Dow Jones & Co. is seeking a Senior Machine Learning Engineer for the Barcelona area to design and operate scalable search and personalization systems.

You will work at the intersection of backend engineering, data, and applied AI, shaping content discovery and user engagement in a high-traffic environment. You will drive model development, experimentation, and deployment, leveraging embeddings, two-tower architectures, and LLMs to elevate search quality.

Formación

• 2–4 years of industry ML experience with focus on recommender, search, ranking or personalization.
• Strong proficiency in Python for production ML systems.
• Experience with A/B testing and experimentation frameworks.
• Familiarity with cloud platforms (AWS, GCP, or Azure) and containerized environments.
• Familiarity with SQL and NoSQL databases.
• Degree in computer science, machine learning, statistics, or equivalent work experience.

Responsabilidades

• Design, build, and operate search systems powering content discovery and engagement.
• Develop and improve ML models across the personalization stack from candidate generation to ranking.
• Improve candidate retrieval using embeddings, two-tower architectures and user/content signals.
• Drive experimentation and A/B testing to measure impact and iterate.
• Leverage LLMs to enhance content understanding and feature extraction.
• Collaborate with product managers, data scientists, and analysts to translate business needs into scalable solutions.
• Contribute to engineering best practices including testing, observability, and CI/CD.

Conocimientos

Python

A/B testing

Experimentation frameworks

Recommender systems

Search/ranking

ML for production

Educación

Degree in computer science, machine learning, statistics, or equivalent work experience

Herramientas

AWS

GCP

Azure

SQL

NoSQL databases

Docker/Kubernetes

Descripción del empleo

Dow Jones & Co. is seeking a Senior Machine Learning Engineer for the Barcelona area to design and operate scalable search and personalization systems.

You will work at the intersection of backend engineering, data, and applied AI, shaping content discovery and user engagement in a high-traffic environment. You will drive model development, experimentation, and deployment, leveraging embeddings, two-tower architectures, and LLMs to elevate search quality.