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Agent guide: [/agents.md](https://www.wearedevelopers.com/agents.md). --- # Data Scientist Quantitative Python - Fintech - **Company:** Client Server - **Location:** Madrid, Spain - **Salary:** €150,000.0 - **Contract:** Permanent contract - **Skills:** Application Programming Interfaces (APIs), Agile Methodology, Client Server Models, Computer Programming, Databases, Data Structures, Software Design Patterns, Python (Programming Language), Object-Oriented Software Development, Standard Sql, SQL Databases - **Published:** July 28, 2026 - **Apply:** https://www.buscojobs.com.es/data-scientist-quantitative-python-fintech-en-madrid-ID-364762735 ## About the Role About you: You have studied at a top 10 university in Spain (or top 200 globally) and have achieved 9.0 and above in Bachillerato and 7.0 and above in University - Mathematics, Statistics preferred, MSc or Ph D advantageous You have commercial experience in a Data Scientist or Quantitative Developer You have advanced Python programming skills You have a strong knowledge of SQL databases You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms You're entrepreneurial with good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas You have fluent English language skills What's in it for you: As a Data Scientist you will receive a competitive package: Salary (to €150,000 negotiable) Bonus 25 days holiday Social team atmosphere with a range of events and early finish for drinks on Fridays Apply now to find out more about this, Data Scientist ## Description Data Scientist / Quantitative Developer (Python Maths) Madrid onsite to €150,000 Are you a mathematically minded, with a first class education and strong Python programming skills?You could be progressing your career, working on complex and interesting systems at a Fin Tech scale-up, they have secure backing and an established Hedge Fund client as a partner.As a Data Scientist within the Portfolio Strategy team, you'll focus on integrating the mathematical models built by Investment Quants, creating scalable, performant and supportable cross asset class applications including APIs, UIs and tools.You'll be mainly using backend Python and SQL.There's an Agile, collaborative team environment with plenty of problem solving, learning opportunities and career development as the company scales.Location: You'll be based in Madrid on a fulltime basis (Monday to Friday).About you: You have studied at a top 10 university in Spain (or top 200 globally) and have achieved 9.0 and above in Bachillerato and 7.0 and above in University - Mathematics, Statistics preferred, MSc or Ph D advantageous You have commercial experience in a Data Scientist or Quantitative Developer You have advanced Python programming skills You have a strong knowledge of SQL databases You have a thorough understanding of Computer Science fundamentals such as OOP, Data Structures, Design Patterns, Algorithms You're entrepreneurial with good business acumen, keen to take ownership and lead projects You're collaborative, enjoy problem solving and sharing ideas You have fluent English language skills What's in it for you: As a Data Scientist you will receive a competitive package: Salary (to €150,000 negotiable) Bonus 25 days holiday Social team atmosphere with a range of events and early finish for drinks on Fridays Apply now to find out more about this Data Scientist / Quantitative Developer (Python Maths) opportunity.At Client Server we believe in a diverse workplace that allows people to play to their strengths and continually learn.We're an equal opportunities employer whose people come from all walks of life and will never discriminate based on race, colour, religion, sex, gender identity or expression, sexual orientation, national origin, genetics, disability, age, or veteran status.The clients we work with share our values.#J-*****-Ljbffr ## Related Videos - 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