> Markdown version of [/jobs/ext/2938674-senior-machine-learning-staff-engineer](https://www.wearedevelopers.com/jobs/ext/2938674-senior-machine-learning-staff-engineer). 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). --- # Senior Machine Learning/Staff Engineer - **Company:** Smadex - **Location:** Madrid, Spain - **Contract:** Permanent contract - **Skills:** Java (Programming Language), Amazon Web Services, Artificial Neural Networks, Data Mining, Data Visualization, Linux, Python (Programming Language), Linux System Administration, Machine Learning, Scala (Programming Language), SQL Databases, Apache Spark, Git, Information Technology, Data Analytics, Bitbucket, Software Coding, Software Version Control - **Published:** September 16, 2026 - **Apply:** https://www.buscojobs.com.es/senior-machine-learning-staff-engineer-en-madrid-ID-370523529 ## About the Role Candidates must have 5+ years in data science, strong coding skills in Python, Scala, Java, experience with high-performance algorithms, statistical techniques, data mining, predictive modeling, version control (Bitbucket/Git), SQL, and excellent communication skills. Fluency in English and mentoring ability required. Preferred qualifications include a Master's degree in Statistics, Applied Mathematics, or Computer Science, experience with data visualization tools, digital marketing platforms, Apache Spark, AWS services, and Linux environments. The role offers a hybrid work model with 2 days remote per week. private health insurance LinkedIn Learning access meal vouchers gym allowance and a collaborative work environment in Barcelona. ## Description Smadex is seeking a Senior Machine Learning/Staff Engineer to lead architectural decisions and development of deep neural network algorithms.Responsibilities include developing new features, improving pipelines, deploying scalable data analytics and ML solutions, and collaborating with Tech and Ops teams.Candidates must have 5+ years in data science, strong coding skills in Python, Scala, Java, experience with high-performance algorithms, statistical techniques, data mining, predictive modeling, version control (Bitbucket/Git), SQL, and excellent communication skills.Fluency in English and mentoring ability required.Preferred qualifications include a Master's degree in Statistics, Applied Mathematics, or Computer Science, experience with data visualization tools, digital marketing platforms, Apache Spark, AWS services, and Linux environments.The role offers a hybrid work model with 2 days remote per week.private health insurance LinkedIn Learning access meal vouchers gym allowance and a collaborative work environment in Barcelona.#J-*****-Ljbffr ## Related Videos - [Improving Developer Happiness with GitOps](https://www.wearedevelopers.com/videos/54-improving-developer-happiness-with-gitops) - [Docker network without Docker](https://www.wearedevelopers.com/videos/1418-docker-network-without-docker) - [How a Small Team Shrank a Microsoft Monorepo by 94%](https://www.wearedevelopers.com/videos/1236-how-a-small-team-shrank-a-microsoft-monorepo-by-94) - [Empowering Retail Through Applied Machine Learning](https://www.wearedevelopers.com/videos/976-empowering-retail-through-applied-machine-learning) - [Docker exec without Docker](https://www.wearedevelopers.com/videos/1094-docker-exec-without-docker) - [Introduction to Azure Machine Learning](https://www.wearedevelopers.com/videos/368-introduction-to-azure-machine-learning) ## Related Articles - [Fully Remote Software Engineer Jobs](https://www.wearedevelopers.com/magazine/447-fully-remote-software-engineer-jobs) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [Why Upskilling And Reskilling is Important For Developers](https://www.wearedevelopers.com/magazine/428-why-upskilling-and-reskilling-is-important-for-developers) - [7 Most Popular Web Developer Jobs in Europe](https://www.wearedevelopers.com/magazine/163-7-most-popular-web-developer-jobs-in-europe)