Do you want to work on complex and pressing challenges—the kind that bring together curious, ambitious, and determined leaders who strive to become better every day? If this sounds like you, you’ve come to the right place. Your Impact: - As a Data Scientist at QuantumBlack in Brazil, you will partner with some of the world’s leading organizations to tackle their most critical challenges using data. - From data owners and end users to C-level executives, you’ll work closely with clients to understand their needs and design impactful analytics solutions that drive performance. - You will be a key contributor in cross-functional problem-solving sessions, translating complex business questions into analytical problems and building models that address them—ensuring those models are evaluated with relevant, actionable metrics. - You will help shape the development of our internal Data Science Toolbox, writing highly optimized code and supporting the delivery of innovative, scalable solutions. - You will also have the opportunity to: - Present your work to colleagues and clients, communicating insights in a clear and compelling way - Write and present papers at internal and external conferences (such as NeurIPS and ICML), if you choose to - Join global retrospectives and R&D initiatives, learning and sharing alongside experts across QuantumBlack - Collaborate with interdisciplinary teams that bring together data science, engineering, design, and business expertise - Our projects range from accelerating clinical research to improving urban air quality or enhancing elite sport performance - always focused on creating real-world impact. Your Growth: - You will be based in São Paulo and collaborate with data scientists, engineers, machine learning specialists, designers, and product managers from around the world. - At QuantumBlack, your growth is continuous and personalized. - You will benefit from: - Diverse projects and clients, giving you international exposure and unique challenges - Cutting-edge tools and technologies, enabling you to sharpen your skills in modern data science workflows - Tailored learning and mentorship, including training programs, technical deep dives, and global knowledge-sharing - Career path flexibility, with opportunities to explore new domains or geographies as you grow - A strong sense of community, connecting with colleagues through meetups, workshops, and events across the QuantumBlack and McKinsey networks - Here, you won’t just build solutions - you’ll help shape how we define excellence in data science. Your qualifications and skills: - University degree with a strong academic record; Master’s in computer science, applied statistics, mathematics, artificial intelligence, or related field preferred - Strong background in computer science, engineering, statistics, mathematics, physics, or similar - Ability to lead and drive model development independently, balancing quality and deadlines - Proficiency in Python and at least one additional language (e.g., R, Scala, SQL) - Experience working with relational databases (SQL) and large datasets - Ability to communicate ideas most effectively - both verbally and in writing - in English and Portuguese - Please submit your CV in English.