Overview
In this role you will design and operate scalable search and personalization systems to deliver highly relevant experiences to millions of readers. You’ll work at the intersection of backend engineering, data, and applied AI within the Search team in Barcelona, shaping content discovery and user engagement. You’ll drive model development, experimentation, and deployment while collaborating with product and data teams to turn business needs into scalable, high-performance solutions. This is an opportunity to leverage embeddings, two-tower architectures, and LLMs to elevate search quality in a high-traffic environment.

Compensaciones / BeneficiosComprehensive Healthcare PlansExtra paid Time Off (30 holidays)Remote work options ( Hybrid Barcelona)Meal benefit with PluxeePension plan with company matchWell-being resources (Classpass, Spring Health)
ResponsabilidadesDesign, build,



and operate search systems powering content discovery and engagementDevelop and improve ML models across the personalization stack from candidate generation to rankingImprove candidate retrieval using embeddings, two-tower architectures and user/content signalsDrive experimentation and A/B testing to measure impact and iterateLeverage LLMs to enhance content understanding and feature extractionOptimize systems for performance, latency, and scalability in high-traffic environmentsContribute to engineering best practices including testing, observability, and CI/CDCollaborate with product managers, data scientists, and analysts to translate business needs into scalable solutions
Requisitos principales2-4 years of industry ML experience with focus on recommender, search, ranking, or personalizationStrong proficiency in Python for production ML systemsExperience with A/B testing and experimentation frameworksFamiliarity with cloud platforms (AWS, GCP, or Azure) and containerized environmentsFamiliarity with SQL and NoSQL databasesDegree in computer science, machine learning, statistics, or

📌 Senior Machine Learning Engineer, Search (Barcelona)
🏢 Jobrapido
📍 Barcelona