Senior ML Engineer

This position is listed on behalf of a partner company, who manages all applications and next steps. Our partner is looking for a Senior ML Engineer based in Brazil. Join an innovative engineering team building next-generation infrastructure for global payments, helping businesses simplify payment operations and improve transaction performance. As a Senior ML Engineer, you will be among the first specialists shaping the organization's machine learning capabilities, working closely with experienced engineers and cross-functional partners to turn promising ideas into production-ready solutions. You will own the full machine learning lifecycle, from researching approaches and evaluating models to deployment, monitoring, and continuous improvement. Your work will help optimize payment routing decisions, improve operational efficiency, and deliver measurable business outcomes. This remote-first opportunity offers significant technical ownership, room to experiment, and the chance to establish reliable machine learning practices in an evolving environment. You will also mentor colleagues, influence technical direction, and help identify where machine learning can create the greatest impact.