Senior Machine Learning Engineer

The role

Machine Learning Engineers build, train, and deploy models for credit, fraud, risk, and personalization. They work across the full modeling lifecycle to solve business problems using machine learning and generative AI.

What you will do

• Contribute to Nu Colombia strategy by building forecasting and marketing investment models
• Frame ambiguous business problems as well-defined modeling problems
• Design, build and validate machine learning models
• Engineer and maintain features and datasets for training and inference
• Deploy and maintain ML models in batch and real-time scenarios
• Lead modeling projects end-to-end from framing to delivery and monitoring
• Translate business needs into modeling strategies

Required qualifications

• Strong foundation in statistics, machine learning theory and modeling techniques
• Programming experience in Python
• Familiarity with ML libraries (e.g. scikit-learn, PyTorch, TensorFlow, XGBoost)
• Experience training, validating, and tuning models
• Understanding of the ML model lifecycle
• Ability to write efficient SQL queries
• Strong communication skills

Nice to have

• Experience with cloud platforms such as AWS, GCP or Azure
• Familiarity with distributed systems, microservices and asynchronous architectures
• Experience with feature stores, MLOps tooling and experiment tracking
• Knowledge of data architecture patterns
• Experience with data visualization tools
• Knowledge of software engineering best practices

Benefits

• Chance of earning equity at Nu
• Extended maternity and paternity leaves
• Health and life insurance
• NuCare - mental health and wellness assistance program
• Nucleo - learning platform of courses
• NuLanguage - language learning program
• Vacations of 15 workdays
• Gym partnership
• Work-from-home Allowance
• Parental Consultancy
• Relocation Assistance Package, if applicable

Before you apply

• Recruitment process may involve the use of artificial intelligence–enabled tools
• Nu does not provide individualized technical feedback

About the company

Nu serves more than 140 million customers with a mission to fight complexity and empower people. The company uses proprietary technology and data at scale to power its digital platform.