Keyrus
Keyrus
Keyrus is an international data and consulting company that helps organizations turn data into insight and informed action. Its work spans data analytics, data advisory, and data management, with vendor-independent approaches tailored to different business needs. Operating across 18 countries, Keyrus brings together teams focused on analytical expertise, collaboration, and practical innovation. Employees can continue developing their skills through the company’s KLX learning platform while contributing to projects shaped by an open, inclusive, and transparent workplace culture.

Senior Data Scientist - Fluent English, Hybrid in Sao Paulo

Senior Data Scientist at Keyrus, an international data and AI group. Develop data pipelines, machine learning models, and solutions for fraud, AML, lead scoring, and churn.

Description

  • Build automations and data pipelines with Python, PySpark, and SQL to modernize processes and reduce manual effort.
  • Design and deliver end-to-end machine learning models, from data exploration and feature engineering through deployment, monitoring, and retraining.
  • Process large datasets in distributed environments while maintaining performance, quality, and traceability.
  • Deliver business-focused data science and machine learning solutions for fraud, AML, lead scoring, and churn initiatives.
  • Provide technical guidance to junior professionals through code reviews, best practices, and data science and machine learning mentorship.
  • Lead meetings and technical discussions in English.
  • Convert legacy processes into robust, automated, and scalable solutions.

Requirements

  • Fluent English and confidence leading meetings.
  • Demonstrated senior-level data science experience with technical ownership of AI and machine learning initiatives from ideation and scoping through implementation and production operations.
  • Advanced Python skills for data science, automation, and pipeline development.
  • Practical experience with machine learning pipelines, model and artifact versioning, and reproducible workflows.
  • Experience monitoring models and managing drift.
  • Experience working with large-scale data and distributed environments using PySpark.
  • Ability to work independently, take technical ownership, and turn legacy processes into reliable automations.
  • Strong communication skills and the ability to explain technical decisions clearly and objectively.
  • Excellent communication skills with technical and non-technical audiences.
  • Ability to convert business needs into practical, scalable solutions.
  • Ability to influence decisions and build trusted stakeholder relationships.
  • Analytical approach with strong problem-solving skills.
  • Commitment to delivering value and measurable results for clients and the business.
  • Collaborative approach focused on knowledge sharing and continuous improvement.

Benefits

  • Work in a diverse, multicultural environment at Keyrus.
  • Connect with colleagues from different parts of the world.
  • Share knowledge and ideas across teams.
  • Collaborate on high-quality projects.

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