1 month ago
Barcelona, SpainSenior
Responsibilities
- Design, build, and operate search systems and services powering content discovery and user engagement.
- Develop and improve machine learning models across the personalization stack, from candidate generation through final ranking.
- Improve candidate retrieval using embeddings, two-tower architectures, and user and content signals.
- Use experimentation and A/B testing to measure model and feature impact.
- Leverage large language models to improve content understanding and feature extraction.
- Optimize systems for performance, latency, and scalability in high-traffic environments.
- Contribute to engineering practices including testing, observability, and CI/CD.
- Collaborate with product managers, data scientists, and analysts to create scalable technical solutions.
Requirements
- 2–4 years of industry experience applying machine learning methods, particularly in recommender systems, search, ranking, or personalization.
- Strong proficiency in Python for production machine learning systems.
- Experience with A/B testing and experimentation frameworks.
- Familiarity with AWS, GCP, or Azure and containerized environments.
- Familiarity with SQL and NoSQL databases.
- Degree in computer science, machine learning, or statistics, or equivalent work experience.
Benefits
- Comprehensive healthcare plans for the employee and family, paid by Dow Jones.
- 30 days of paid holidays per year.
- Hybrid position based in Barcelona.
- Option to work remotely for three months per year and one week remotely per quarter.
- Meal benefit of €171 per month in addition to salary.
- Retirement plan with employer contributions and matching up to the stated limits.
- Life insurance, wellbeing resources, ClassPass, Spring Health, family care benefits, caregiving support, Hone and LinkedIn Learning courses, and an employee referral program.
Tech Stack
Categories
About Dow Jones
Dow Jones is a global provider of news and business information, delivering content to consumers and organizations around the world across multiple formats, including print, digital, mobile and live events. Dow Jones has produced unrivaled quality content for more than 130 years and today has one of the world’s largest news-gathering operations globally. It is home to leading publications and products including the flagship Wall Street Journal, America’s largest newspaper by paid circulation; Barron’s, MarketWatch, Mansion Global, Financial News, Investor’s Business Daily, Factiva, Dow Jones Risk & Compliance, Dow Jones Newswires, OPIS and Chemical Market Analytics.