Sr. Machine Learning Engineer

We're looking for a Senior ML Engineer to build real-time ML systems for our mobile advertising platform. You'll own the full lifecycle - feature engineering, model training, deployment, and production monitoring.

What You'll Build:

• ML Serving Infrastructure
• Real-time, low-latency model serving
• Deep learning (PyTorch) and tree-based models (LightGBM/XGBoost) behind FastAPI on AWS ECS
• MLOps Pipelines
• Model promotion workflows: local → staging → production
• Automated validation gates before promotion (offline eval metrics, data quality checks)
• Retraining pipelines via Databricks Workflows (scheduled + drift-triggered)
• CI/CD for both code and model artifacts
• Blue-green or canary deployments for safe rollouts
• Monitoring & Observability
• Model quality tracking: accuracy, precision, recall...