> Markdown version of [/jobs/ext/14845-data-scientist-i](https://www.wearedevelopers.com/jobs/ext/14845-data-scientist-i). 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). --- # Data Scientist I - **Company:** Checkout.com - **Location:** Paris, France - **Experience:** Starter - **Contract:** Permanent contract - **Skills:** Big Data, Information Engineering, Data Transformation, Machine Learning, Payment Gateway, Software Engineering, Code Structure, Advanced Reports, Data Analytics, Golang - **Published:** May 14, 2026 - **Apply:** https://fr.indeed.com/viewjob?jk=3e6b4f19c56966bc ## About the Role Do you have experience in Machine learning?, Software Engineering Knowledge: Have hands-on experience with Software Engineering, including application of data algorithms. Machine Learning Expertise: Experienced with a wide variety of supervised ML algorithms, including advanced techniques like multi-arm bandits. Experience in creating custom loss functions or evaluation frameworks to better reflect specific business problems is a plus. Data Engineering Proficiency: Strong practical knowledge of data transformation, including proficiency with a wide variety of data munging techniques (e.g., groupbys, merging tables). Advanced Analytical Mindset: Ability to analyze large datasets to understand complex relationships, identify outliers, and use modeling techniques to derive additional insights. End-to-End Ownership & Delivery: Proven ability to own subjects across multiple areas of the business, ensuring technical success directly translates into tangible business value and revenue growth. Complex Project Management: Proven ability to manage and coordinate complex projects, particularly those involving R&D with clear business outcomes. Communication: Fluent verbal and written communication in English and French, with the ability to tune communication for technical and non-technical stakeholders. Bonus points for Direct experience in the Online Payments industry Golang knowledge. ## Description As a Data Scientist I at ProcessOut, you will be instrumental in driving value by maximizing merchant payment performance while minimizing operational cost. You will own the full data science lifecycle, delivering highly-performant, production-ready solutions that handle millions of daily transactions. What you will be doing Algorithmic Optimization & Business Impact: Deeply understand merchant business models and KPIs to identify opportunities for technical and algorithmic improvement. This includes leveraging decomposition methods and supervised modeling to understand complex data relationships and create new features that exploit feature interactions. Production Software Development: Deliver robust, fully-fledged services, not just Proofs of Concept. This requires writing well-documented, clear, and concise code, with consideration for code structure and future adaptation. Data-Driven Iteration: Use insights from supporting merchants to continually challenge and enhance the tools you build, maximizing their self-serve capabilities and maximizing business and payment knowledge. Metrics & Strategic Reporting: Define and expose KPIs that accurately measure the team's direction and ensure alignment with business objectives. Communicate work, hypotheses, and strategic impact clearly to both technical and non-technical audiences. Payments Expertise: Proactively dive into complex payments documentation and technical specifications to find and validate new possibilities for optimization and exploration. ## Related Videos - [Alibaba Big Data and Machine Learning Technology](https://www.wearedevelopers.com/videos/37-alibaba-big-data-and-machine-learning-technology) - [Data Science in Retail](https://www.wearedevelopers.com/videos/586-data-science-in-retail) - [Go with the Flow: Stop the Leaks Before Your Memory's a Waterfall!](https://www.wearedevelopers.com/videos/100073-go-with-the-flow-stop-the-leaks-before-your-memory-s-a-waterfall) - [How Unit Testing Saved My Career](https://www.wearedevelopers.com/videos/1642-how-unit-testing-saved-my-career) - [PySpark - Combining Machine Learning & Big Data](https://www.wearedevelopers.com/videos/44-pyspark-combining-machine-learning-big-data) - [Scoring 2000 Products per Request: Performance Pitfalls in Golang](https://www.wearedevelopers.com/videos/2073-scoring-2000-products-per-request-performance-pitfalls-in-golang) ## Related Articles - [Top-Paying Tech Jobs (with Salaries)](https://www.wearedevelopers.com/magazine/372-top-paying-tech-jobs-with-salaries) - [Best Companies to Work For in Paris: Top 25 Companies in 2023 ](https://www.wearedevelopers.com/magazine/190-best-companies-to-work-for-in-paris-top-25-companies-in-2023) - [Highest Paying Tech Companies in Europe](https://www.wearedevelopers.com/magazine/162-highest-paying-tech-companies-in-europe) - [Data Engineer Salary UK](https://www.wearedevelopers.com/magazine/253-data-engineer-salary-uk) - [The Most Popular IT Jobs on the Market](https://www.wearedevelopers.com/magazine/376-the-most-popular-it-jobs-on-the-market) - [Jobs in Tech: The State of the European Market](https://www.wearedevelopers.com/magazine/575-jobs-in-tech-the-state-of-the-european-market)