Senior Machine Learning Engineer

About Amartha

At Amartha, we empower micro-businesses across Indonesia, enabling growth and equal prosperity. We've supported over 3.5+ million enterpreneurs–mostly women–by disbursing 2 billion USD in funding. As we step into 2026, Amartha is evolving into a technology-driven financial ecosystem, expanding our reach in lending, funding, and payments. Through innovation and digital solutions, we aim to enhance accessibility, streamline processes, and create a seamless user experience.

Roles and Responsibilities:

• Design, develop, and productionize ML models for credit scoring, underwriting, fraud detection, collections, and portfolio risk management.
• Build robust features from customer, transaction, repayment, behavioral, and alternative data.
• Select and evaluate appropriate algorithms, with emphasis on explainable and high-performing models such as XGBoost.
• Define offline and online evaluation metrics aligned with lending outcomes and business objectives.
• Address class imbalance, data leakage, bias, model stability, and changing customer behavior.
• Build reliable training, validation, deployment, monitoring, and retraining pipelines.
• Monitor model performance, calibration, drift, fairness, and operational impact in production.
• Produce clear model documentation and explain decisions to risk, product, engineering, compliance, and business s