Senior Software Engineer, Personalization

Job Description:

Senior Software Engineer, Personalization

Dow Jones

Job Location:

Barcelona Job  - Sr Software Engineer

Our Technology team drives the evolution of our Technology, Engineering, Data, Product and User Experience functions. With a keen focus on delivering cutting‑edge solutions, we shape the digital landscape for our customers, readers and users. From revolutionizing visuals to optimizing tools and harnessing the power of data, mobile, video and social platforms, our team is committed to providing a seamless and immersive experience across all touchpoints.

Collaborating closely with our newsrooms and strategic partners, we spearhead the development of groundbreaking products and technologies.

We are looking for a Senior Software Engineer to join our Personalization team in Barcelona. You will design and build systems that deliver highly relevant, personalized experiences across our digital products. This role sits at the intersection of backend engineering, data, and applied AI—leveraging modern architectures and machine learning techniques to connect users with the most relevant content.

You will play a key role in developing scalable personalization platforms, including recommendation systems and retrieval‑augmented generation (RAG) pipelines, working closely with product, data science, and design partners.

• Design, build, and operate personalization systems and services powering content discovery and user engagement

• Develop and maintain RAG pipelines integrating LLMs with structured and unstructured data sources

• Build recommendation engines (content, articles, entities, or signals) using collaborative, content‑based, or hybrid approaches

• Own services end‑to‑end: architecture, implementation, deployment, and production reliability

• Collaborate with product managers, data scientists, and analysts to translate business needs into scalable technical solutions

• Optimize systems for performance, latency, and scalability across high‑traffic environments

• Contribute to engineering best practices, including testing, observability, and CI/CD

• 3+ years of experience building backend systems and distributed services

• Strong proficiency in Python (production‑grade systems)

• Experience working with RAG pipelines or LLM‑based applications

• Understanding of data modeling, APIs, and microservices architectures

• Experience working with cloud platforms (AWS, GCP, or Azure) and containerized environments

• Familiarity with SQL and No
  
  SQL databases

• Experience building personalized recommendation systems (e.g., ranking, candidate generation, user embeddings)

• Familiarity with machine learning workflows, feature engineering, and experimentation (A/B testing)

• Comprehensive Healthcare Plans for you and your family (paid by Dow Jones)

• Extra paid Time Off (30 days of holidays/year)

• Possibility to work remotely for 3 months/year (desplazamiento program) or one week of remote work per quarter

• Meal benefit with Pluxee (171€/month on top of your salary)

• Retirement Plans (Dow Jones will pay 2% of a members Pensionable Salary and match employee contribution up to a maximum of 3 %).

• Comprehensive Insurance Plans

• Well‑being Resources (200 USD allowance per quarter, Classpass, etc.)

• Family Care Benefits & Caregiving Support

• Subscription Discounts

• Employee Referral Program

All qualified applicants will receive consideration for employment without regard to race, color, religion, sex, age, national origin, protected veteran status, disability status or any other protected characteristic. We strongly encourage applications from all qualified individuals, including women, people with disabilities, and those from underrepresented groups.

We are committed to providing reasonable accommodation for qualified individuals with disabilities in our job application and/or interview process. If you need assistance or accommodation in completing your application or participating in an interview due to a disability, email us at ta Please put “Reasonable Accommodation” in the subject line and provide a brief description of the type of assistance you need.

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