> Markdown version of [/jobs/ext/1608050-barcelona-on-site-ml-engineer-data-scientist](https://www.wearedevelopers.com/jobs/ext/1608050-barcelona-on-site-ml-engineer-data-scientist). Every page supports `.md` or `Accept: text/markdown`. Links point to the HTML versions so they work for humans too. Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Barcelona On-Site ML Engineer / Data Scientist - **Company:** Postaladdress - **Location:** Barcelona, Spain - **Salary:** €70,000.0 - €100,000.0 - **Contract:** Permanent contract - **Skills:** Amazon Web Services, Python (Programming Language), SQL Databases, Comet Programming, Pytorch, Pandas, Pyspark - **Published:** July 13, 2026 - **Apply:** https://www.jobleads.com/es/job/e647f82c620bce185dd6b2a83f849c49c ## About the Role Ideal candidates have 2+ years in ad-tech, 3+ years in data science, strong Python/SQL with PySpark and Pandas, and experience with PyTorch, Hydra or Comet, and AWS. ## Description All The Hires seeks a Data Scientist / ML Engineer in Barcelona to design end-to-end models for ad targeting and ROI improvement. You will scale data science solutions from analysis to production and uncover trends that shape product decisions. ## Related Videos - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) - [Photonic Computing: Programming a New Class of AI Accelerators (incl. Live Coding)](https://www.wearedevelopers.com/videos/100196-photonic-computing-programming-a-new-class-of-ai-accelerators-incl-live-coding) - [Advanced Typing in TypeScript](https://www.wearedevelopers.com/videos/496-advanced-typing-in-typescript) - [Empowering Retail Through Applied Machine Learning](https://www.wearedevelopers.com/videos/976-empowering-retail-through-applied-machine-learning) - [Serverless deployment of (large) NLP models ](https://www.wearedevelopers.com/videos/158-serverless-deployment-of-large-nlp-models) ## Related Articles - [5 Best Emerging Tech Cities in Europe](https://www.wearedevelopers.com/magazine/361-5-best-emerging-tech-cities-in-europe) - [Find a Developer Job: 12 Best Job Sites For Developers](https://www.wearedevelopers.com/magazine/165-find-a-developer-job-12-best-job-sites-for-developers) - [Dev Digest 120 - Apple and peers](https://www.wearedevelopers.com/magazine/455-dev-digest-120-apple-and-peers) - [Dev Digest 121 - AI goes offline](https://www.wearedevelopers.com/magazine/456-dev-digest-121-ai-goes-offline) - [The Best Job Search Websites of 2025](https://www.wearedevelopers.com/magazine/368-the-best-job-search-websites-of-2025) - [The Best Tech Hubs in Europe: 5 Best Cities For Software Engineers](https://www.wearedevelopers.com/magazine/246-the-best-tech-hubs-in-europe-5-best-cities-for-software-engineers)