Lead Machine Learning Engineer / Applied AI Scientist

We are seeking a Lead Machine Learning Engineer / Applied AI Scientist to lead high-impact research projects that bridge the gap between state-of-the-art AI and production-grade financial systems.

Requirements

• 5-7+ years in applied AI/ML
• Deep expertise in Deep Learning architectures (Transformers, Multimodal, or GNNs)
• Strong coding skills in Python and proficiency with frameworks like PyTorch, JAX, or TensorFlow
• Solid understanding of MLOps and the constraints of deploying models at scale
• Problem Solving: Sophisticated skills in ML problem formulation and the ability to navigate uncertainty when data is messy or unavailable
• Communication: Ability to communicate complex technical concepts to both technical peers and cross-functional stakeholders, ensuring alignment and buy-in
• Analytical Capacity: Experience with large-scale experimentation and A/B testing to validate research hypotheses

Benefits

• Chance of earning equity at Nubank
• Food/ Meal Card (Vale-Refeição and/or Vale Alimentação)
• Public Transportation Commuting Benefit (Vale-Transporte)
• NuCare – Psychological, Financial and Legal Assistance Program
• Life Insurance
• Medical Plan
• Dental Plan
• NuLanguage – Language Course Program
• Nucleo - Our learning platform of courses
• Extended Parental Leave
• Daycare Allowance
• Parental Consultancy
• Work-from-home Allowance
• Gym Partnerships
• 30 days of paid vacation
• Relocation Assistance Package, if applicable