Senior ML Engineer - Real-Time Fraud & Risk Prevention

Waymo; Warszawa; Hybrid; PLN 240,000 - 360,000; Full time

Benefits offered by this job

Health insurance

Dental insurance

Vision insurance

Life insurance

Disability insurance

401(k)

Paid time off

Job summary

Waymo is seeking a Senior ML/Backend Engineer to help build production-grade ML systems and low-latency services for real-time decision making in mobility platforms. You will design, train, deploy models and scale backend infrastructure.

You will collaborate with Product, Finance, and Safety to balance revenue protection, rider trust, and safety as Waymo expands to new markets, while maintaining high availability and auditability.

Qualifications

• Bachelor's degree in CS, Math, Stats, or equivalent practical experience.
• 5+ years of software engineering building distributed backend systems or production ML systems (Python, Java, Kotlin, C++, Go, or similar).
• Hands-on experience training, evaluating, and deploying ML models to production.
• Experience serving models or critical business logic in low-latency, high-availability production environments.
• Strong fundamentals in data modeling, and SQL analytics.

Responsibilities

• Train, evaluate, and ship production ML models to score rider risk in real time, protecting revenue from payment fraud and reducing vehicle vandalism.
• Engineer and maintain high-throughput, low-latency feature pipelines over payment, trip, device, and identity events, ensuring consistency between offline training and online serving.
• Build and operate the real-time model serving infrastructure integrated into the critical trip creation and payment authorization paths under strict latency and availability budgets.
• Design and implement safe, graduated enforcement mechanisms with full audit trails, reversibility, and support for rider appeals.
• Partner cross-functionally with Product, Finance, and Safety to balance revenue protection, rider trust, and compliance as Waymo scales to new markets.

Skills

Distributed backend

Python

Java

C++

Go

ML deployment

SQL analytics

Education

Bachelor's degree

Job description

Waymo is seeking a Senior ML/Backend Engineer to help build production-grade ML systems and low-latency services for real-time decision making in mobility platforms. You will design, train, deploy models and scale backend infrastructure.

You will collaborate with Product, Finance, and Safety to balance revenue protection, rider trust, and safety as Waymo expands to new markets, while maintaining high availability and auditability.