Smadex is a cutting‑edge ad‑tech company: we process more than 4.5 million ad requests per second, replying under 100 ms (for reference, the Google search engine handles ~76,000 QPS). Every day we generate several TBs of data that need to be processed, analyzed and aggregated, so our real‑time components get smarter every day. We need you to help us keep our platform in motion If you are ready to boost your professional career in the tech world, this is your opportunity.

Inscríbase sin demora Se espera un gran volumen de solicitantes para el puesto que se detalla a continuación, no espere para enviar su CV.

The team

You will join our core engineering team, a collaborative group of experienced engineers responsible for enabling complex data to be available in the real‑time bidding platform for the Machine Learning models to use. We foster a fast‑paced, supportive environment where knowledge sharing is key. We value autonomy and will provide the platform for you to grow your career while solving complex engineering challenges.

What are we looking for?





We’re looking for an enthusiastic Junior Data Engineer who is passionate about data pipelines and excited by extreme performance challenges. Your success will be measured by your ability to help build robust data pipelines, deliver high‑quality features, and collaborate closely with the team while eagerly learning and applying your knowledge effectively.

What will you do at Smadex?

You will dive into a dynamic environment, tackling short‑cycle tasks such as implementing complex data ingestion services, following a “you build it, you run it” philosophy. You will be expected to participate in code reviews, contribute to technical and architectural decisions, and collaborate in a fast‑paced environment where every opinion counts.

Key Responsibilities
- Feature Ownership : Design, develop, and implement Data features for the Machine Learning models to use.
- Quality Assurance : Write clean, efficient, testable code a

📌 Junior Data Engineer (Barcelona)
🏢 Smadex
📍 Barcelona