Staff Machine Learning Engineer, Predictive Systems

San Francisco, CA - USA

Monthly Salary: Not Disclosed

Posted on: 2 days ago

Vacancies: 1 Vacancy

Job Summary

The Role

As a Staff Machine Learning Engineer on the Predictive Systems team you will drive the technical strategy for ML and decisioning systems that address risk fraud and abuse across Block. Acting as a technical domain owner for Cash App Square and Afterpay you will shape how AI solutions are architected integrated and operationalized. Your leadership ensures that risk management functions as an enabler for product velocity allowing teams to deploy features rapidly while maintaining a trusted ecosystem.

You are accountable for the production lifecycle of these systems orchestrating the convergence of data features models and controls into scalable defenses. Operating at the ecosystem level you will define durable abstractions and decisioning patterns that standardize risk strategies across diverse domains. You will also influence the roadmap of Blocks core ML infrastructure ensuring the platform evolves to meet the requirements of complex high-volume decisioning workloads.

You Will

Act as a technical lead across multiple Risk ML engineering teams setting direction for how ML and AI solutions are applied to fraud abuse and risk decisioning.
Design and evolve real-time and batch ML systems that leverage Blocks core ML platforms to deliver scalable risk solutions.
Drive architectural decisions around feature usage contextual signals and ML-driven controls in partnership with modeling product and platform teams.
Translate ambiguous risk problems into clear technical strategies and execution plans.
Lead cross-team efforts to integrate new data sources signals and event hooks into production risk systems.
Establish standards for data quality observability and correctness for ML inputs and decisions.
Provide technical leadership during emerging threat and SEV scenarios guiding rapid mitigation while preserving long-term system health.
Influence ML and AI engineering practices across Risk improving consistency reliability and velocity.

You Have

Extensive experience designing and leading large-scale ML systems with broad organizational impact.
A proven ability to set technical vision and drive alignment across multiple teams and disciplines.
Deep understanding of ML systems data platforms and real-time decisioning at scale.
Strong judgment in navigating complex tradeoffs involving risk trust and product velocity.
A history of mentoring senior engineers and developing future technical leaders.
A systems-level mindset and a bias toward durable high-leverage solutions.

Technologies We Use and Teach

Python Java and Kotlin
Tensorflow and PyTorch
AWS Databricks and Kubernetes
MySQL DynamoDB Kafka Spark

Were working to build a more inclusive economy where our customers have equal access to opportunity and we strive to live by these same values in building our workplace. Block is a proud equal opportunity employer. We work hard to evaluate all employees and job applicants consistently based solely on the core competencies required of the role at hand and without regard to any legally protected class. We believe in being fair and are committed to an inclusive interview experience including providing reasonable accommodations to disabled applicants throughout the recruitment process. We encourage applicants to share any needed accommodations with their recruiter who will treat these requests as confidentially as possible. Want to learn more about what were doing to build an inclusive workplace Check out our Inclusion & Diversity page

Full-time employee benefits include the following:

Healthcare coverage (Medical Vision and Dental insurance)
Health Savings Account and Flexible Spending Account
Retirement Plans including company match
Employee Stock Purchase Program
Wellness programs including access to mental health 1:1 financial planners and a monthly wellness allowance
Paid parental and caregiving leave
Paid time off (including 12 paid holidays)
Paid sick leave (1 hour per 26 hours worked (max 80 hours per calendar year to the extent legally permissible) for non-exempt employees and covered by our Flexible Time Off policy for exempt employees)
Learning and Development resources
Paid Life insurance AD&D and disability benefits

These benefits are further detailed in Blocks policies. This role is also eligible to participate in Blocks equity plan subject to the terms of the applicable plans and policies and may be eligible for a sign-on bonus. Sales roles may be eligible to participate in a commission plan subject to the terms of the applicable plans and policies. Pay and benefits are subject to change at any time consistent with the terms of any applicable compensation or benefit plans.

Required Experience:

Staff IC

The RoleAs a Staff Machine Learning Engineer on the Predictive Systems team you will drive the technical strategy for ML and decisioning systems that address risk fraud and abuse across Block. Acting as a technical domain owner for Cash App Square and Afterpay you will shape how AI solutions are arc...