Senior Machine Learning Engineer
Rio de Janeiro & Sao Paulo, Rio de Janeiro, Brazil
Better Collective
Better Collective: Leading digital sports media group with top sports media brands and esports coverage. Stay updated on news and careersWe are...
An innovative company committed to redefining sports media, daily fantasy, and sports wagering for fans worldwide. As a leader in the iGaming media field, we focus on ensuring a transparent and secure space for sports betting through advanced technologies and expert insights. We offer a dynamic environment for sports enthusiasts and teamwork lovers alike, where your passion can shine and make work both meaningful and enjoyable. With a focus on collaboration, fun, and inclusivity, we invite you to join us on this exciting journey!
You are…
A Senior Machine Learning Engineer passionate about building and deploying data-driven products that power real business impact. You bring deep expertise in machine learning and software engineering, and you're eager to work alongside data scientists, MLOps engineers, and stakeholders across the business to solve complex problems at scale. You enjoy designing ML systems that are not only predictive but production-ready, scalable, and maintainable. You thrive in fast-paced environments, are detail-oriented, and are driven by delivering measurable results through applied ML.
You will…
Design and build production-grade machine learning systems that support personalization, user engagement, fraud detection, or customer lifetime value modeling.
Own the entire ML lifecycle from prototyping to deployment, working closely with MLOps and data engineering to ensure robust and scalable infrastructure.
Apply advanced modeling techniques (regression, classification, time series forecasting, etc.) using structured and unstructured data.
Develop and maintain robust data and feature pipelines, supporting real-time and batch inference.
Benchmark model performance and lead experiments to optimize predictive power, fairness, and business value.
Document your work clearly and concisely to ensure reproducibility and facilitate collaboration across teams.
Leverage tools like MLflow to manage experiments, model versioning, and deployment.
Partner with stakeholders across product, engineering, and analytics to translate business needs into machine learning solutions.
Actively contribute to the technical excellence of the team by reviewing code, sharing knowledge, and promoting best practices.
Hiring Model: PJ
Requirements
Must have…
A B.S. or M.S. in computer science, statistics, data science, engineering, mathematics, or a related field.
4+ years of experience working in applied machine learning or data science roles, with a strong focus on production deployment.
Proficiency in Python and core ML libraries (Scikit-learn, XGBoost, PyTorch/TensorFlow, etc.).
Strong SQL skills and comfort working with data warehouses like AWS Redshift, and solutions like PostgreSQL, MS Server, etc.
Experience building and maintaining robust data pipelines and features for ML workflows.
Solid understanding of supervised and unsupervised ML algorithms, model evaluation techniques, and common pitfalls.
Familiarity with MLflow or similar frameworks for experiment tracking and model lifecycle management.
Comfort with Git-based workflows and CI/CD integration for ML.
Strong collaboration and communication skills in English.
Curiosity, humility, and a drive to continuously improve yourself and the products you build.
Nice to have:
Experience with AWS services such as S3, Lambda, SageMaker, ECR, and CloudWatch.
Exposure to tools in our tech stack: MLflow, Airflow, dbt, Tableau, GitHub, PostreSQL.
Understanding of MLOps best practices (monitoring, drift detection, retraining pipelines).
Previous experience in the iGaming, sports betting, or digital media industries
* Salary range is an estimate based on our AI, ML, Data Science Salary Index 💰
Tags: Airflow AWS CI/CD Classification Computer Science Core ML Data pipelines dbt Engineering Git GitHub Lambda Machine Learning Mathematics MLFlow MLOps Pipelines PostgreSQL Prototyping Python PyTorch Redshift SageMaker Scikit-learn SQL Statistics Tableau TensorFlow Unstructured data XGBoost
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