Staff Machine Learning Engineer, Risk Signals & Controls

Staff Machine Learning Engineer, Risk Signals & Controls

The risk signals and controls team’s mission is to power Block’s risk decisions with trusted signals and lean, effective models built on evolving data. We do that by building efficient tools and workflows to accelerate fraud detection and modeling effectiveness, evaluating thousands of transactions per second in real time. We closely collaborate with ML modelers and software engineers across Block to optimize the signal lifecycle, improving signal quality, reducing noise, and accelerating time-to-insight. We are excited to explore new directions with the team to continue pushing the boundaries of what’s possible.

You Will

• Design, build, and maintain data pipelines to ingest third‑party and Block data to enhance our feature store and modeling capabilities.
• Design elegant ML pipelines and services, prototype new approaches, and productionize solutions at scale.
• Build tooling to help maintain our features and models, gaining efficiencies in fraud detection.
• Work hand‑in‑hand with ML modelers to identify and integrate new data sources, heuristics and models.
• Solve challenging technical problems at scale, collaborating with colleagues located across the globe.
• Apply ML and engineering best practices to shape how Block develops, tests, and maintains ML‑platform solutions.
• Ensure data quality and completeness through automated validation, monitoring, and alerting.
• Own your solutions from design through to operation.

You Have

Technologies We Use and Teach

Full‑time Employee Benefits Include The Following

Block is a proud equal‑opportunity employer. We evaluate all employees and applicants consistently, based solely on the core competencies required for the role, and without regard to any legally protected class. We strive to create an inclusive interview experience and provide reasonable accommodations for disabled applicants. Inclusion & Diversity page.

Salary ranges : United States $100,000–$720,000. San Francisco, CA $132,700–$196,600. Eligible for equity plan subject to terms. Zone A, B, C, D : $276,800–$415,200.

We may use automated AI tools to evaluate job applications for efficiency and consistency. These tools comply with local regulations, including bias audits, and we handle all personal data in accordance with state and local privacy laws. Contact us at privacy@block.xyz with hiring practice or data usage questions.

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