Senior Data Scientist - Fluent English

The role

You will design, build, and maintain scalable data products. You will develop end-to-end machine learning models and provide technical leadership to solve business problems.

What you will do

• Design, develop, and deploy end-to-end machine learning models.
• Collaborate with data analysts, product managers, and engineering teams.
• Develop and refine complex data features from large-scale datasets.
• Champion data quality and integrity.
• Monitor, analyze, and troubleshoot the performance of deployed models.
• Provide technical leadership in statistical modeling, machine learning, and advanced analytics.
• Document and present methodologies and findings to stakeholders.
• Lead by example in scientific rigor and experimentation.
• Mentor and coach junior data scientists and analysts.

Required qualifications

• Degree in Computer Science, Statistics, Engineering, Economics, or a related quantitative field.
• Strong communication and interpersonal skills.
• Ability to balance hands-on technical delivery with mentoring and team enablement.
• Excellent problem-solving skills.
• Fluent English.
• Strong skills in Python for data science (pandas, numpy, scikitlearn, pyspark).
• Hands-on with at least one Cloud Data Platform: Google Cloud Platform (GCP), AWS, Azure, or Databricks.
• Familiar with tools such as PostgreSQL, SQL Server, BigQuery, or Snowflake.
• Experience with supervised learning models (xgboost, logistic regression, etc).
• Experience with unsupervised learning models (clustering algorithms).
• Experience with at least one MLOPS tool: Databricks, mlflow, AWS Sagemaker, or Vertex AI.
• Git code versioning workflow and platforms (Github, Azure Devops, Gitlab etc).

Nice to have

• Experience with a deep learning framework like PyTorch or TensorFlow/Keras

Benefits

• Meal & Transportation Benefits (VR/VT)
• Free Office – work from home or anywhere you want!
• Gympass – access to gyms and wellness programs
• Insurance – life, health, and dental coverage
• In-person Meetings 3x a Year
• Woba – book a coworking space wherever you like!
• Semiannual Reviews

About the company

Artefact Brasil has a culture based on empathy and a healthy work environment. They are committed to building a diverse and inclusive environment.