Staff Machine Learning Engineer, Fraud & Abuse

Responsibilities

• Build and operate production machine learning systems that transform customer and product context into trusted signals, rankings, recommendations, and decision capabilities.
• Design production data and signal contracts covering intended use, freshness, provenance, confidence, eligibility, and calibration.
• Own ranking, retrieval, recommendation, search, propensity, and next-best-action systems end to end, including feature and candidate generation, serving, experimentation, monitoring, and feedback loops.
• Evaluate customer and business impact across trust, fairness, access, risk, compliance, long-term engagement, and segment-level performance.
• Partner with product, growth, data, platform, modeling, risk, and compliance teams to translate ambiguous goals into measurable ML system designs.
• Use AI and agent-assisted tools to accelerate development, analysis, testing, documentation, and operations while exposing reusable capabilities to product services and internal tools.

Requirements

• 12+ years building and operating production software and machine learning systems for business-critical products.
• Deep expertise in ranking and retrieval, recommendations, search, personalization, growth and lifecycle ML, customer intelligence, propensity, churn/LTV, next-best-action, or model-derived risk signals.
• Strong production ML judgment across feature pipelines, model serving, experimentation, monitoring, feedback loops, online/offline consistency, and reliable signal interfaces.
• Ability to evaluate impact beyond short-term conversion, including trust, fairness, access, risk, compliance, and long-term engagement.
• Experience using AI-assisted engineering tools with verification, testing, and review for customer-impacting systems.

Nice to Have

• Semantic retrieval, embeddings, two-tower models, graph features, LLM-powered retrieval or decision systems, entity resolution, or real-time personalization.
• Experimentation, online evaluation, interleaving, counterfactual evaluation, multi-objective optimization, or long-term holdouts.
• Reusable feature or signal platforms, decision services, customer intelligence layers, model-derived data products, or agent-assisted operations.

Technologies

• Python, Java, Kotlin, SQL
• TensorFlow, PyTorch, XGBoost, LightGBM
• Ranking and retrieval systems, embeddings, semantic search, recommendation frameworks
• Event streams, batch pipelines, feature stores, model-serving infrastructure
• Workflow orchestration, experimentation systems, data warehouses, and lakehouses
• Cloud infrastructure, Kubernetes, observability tooling, coding agents, and evaluation harnesses

Compensation and Benefits

• Annual salary range of $276,800–$415,200 USD.
• Benefits include remote work, medical insurance, flexible time off, retirement savings plans, and modern family planning.