Junior Data Scientist
Level inferred from job title
Job description
Junior Data Scientist joining Seedtag's Insights team to turn contextual, audience and campaign data into actionable insights for clients and commercial teams, leveraging the company's AI, Liz.
At a glance
- Employment
- Full-time
- Work mode
- Remote
- Languages
- English – professional working proficiency
What you'll do
- Build and maintain pipelines to analyse campaign performance, audience behaviour, and contextual data across the open web and CTV
- Develop models for audience profiling, content analysis, campaign comparisons, and pre-campaign planning
- Turn analyses into scalable data products using tools such as dbt, Trino, and Airflow, ensuring data quality and reliability
- Prototype LLM-based agents and workflows using techniques such as embeddings, classification, clustering, and summarisation
- Design and evaluate experiments to ensure automated insights are accurate, reliable, and actionable
- Investigate data anomalies, identify root causes, and improve pipeline reliability
- Communicate findings through clear visualisations and actionable recommendations for Product, Sales, and clients
What we're looking for
- 0–2 years of experience in Data Science, Analytics, or Machine Learning, including internships, research, or personal projects
- Degree in Computer Science, Mathematics, Statistics, Engineering, or a related quantitative field, or equivalent practical experience
- Strong Python and SQL skills, with a solid understanding of statistics, machine learning, and model evaluation
- Hands-on experience building LLM-based agents or agentic workflows, including tool calling, structured outputs, or multi-step processes
- Good software engineering practices, including Git, testing, and clean, reproducible code
- Strong analytical thinking and data storytelling skills, with the ability to communicate insights to non-technical stakeholders
- Curious, proactive, and eager to learn, with professional working proficiency in English
Your team
Insights team
Team that transforms contextual, audience, and campaign data into actionable insights for clients and commercial teams, leveraging Liz, Seedtag's AI.
Benefits
- Flexible work model with 100% remote or hybrid options
- Continuous learning through a learning platform and optional language classes
- A supportive, trust-based culture that values well-being
- Team activities, offsites, and opportunities to connect beyond work
- Home office setup budget up to €1,000
- Paid trips to our HQ in Madrid
- MacBook Pro M3
Apply
About Seedtag
The leading Neuro-Contextual Advertising Company
Seedtag combines Artificial Intelligence, Natural Language Processing, Computer Vision, and neuroscience to understand not only what content is about, but how it makes people feel and what they intend to do next. Its proprietary AI, Liz, enables brands to connect with audiences across the open web and Connected TV without cookies or user tracking.
Mission
Transform advertising by proving that effectiveness and user privacy can truly coexist.
Key facts
- 500+ Seedtaggers
- 2014
- Madrid
- Neuro-Contextual Advertising / Ad-tech
- Founded in 2014 by two ex-Googlers
- 500+ Seedtaggers in 17 countries
- Backed by €250M in funding
- Operates as a global ad-tech leader
- Proprietary AI named Liz
What they value
- Outcome over Output
- Failure Is Allowed, Learning Is a Must
- We Are All Scouts
- We Are Data-Driven