Block · 1 hour ago
Senior Machine Learning Engineer, Risk Modeling
United States
Full-time
Remote
Mid, Senior Level
$189K/yr - $284K/yr
2+ years expBlock builds technology to increase access to the global economy, and they are seeking a Senior Machine Learning Engineer to join their Risk Machine Learning organization. The role involves applying machine learning at scale to detect, prevent, and reduce fraud and abuse across Cash App and Square, while collaborating with various teams to design and implement ML-driven risk solutions.
Financial Services
Responsibilities
Partner with product, engineering, data science, policy, and operations to design and productionize ML-driven risk solutions at scale
Own end-to-end machine learning systems, from problem definition and modeling to deployment, monitoring, and iteration
Lead technical decision-making within your workstreams and influence ML strategy and planning
Build tooling and processes that improve the speed, reliability, and impact of the ML development lifecycle
Apply state-of-the-art modeling techniques and third-party data sources to improve detection and decision-making
Investigate emerging fraud, abuse, and risk patterns to proactively inform product safeguards and policy
Collaborate closely with ML platform and engineering teams to ensure models operate reliably in real time and at scale
Qualification
Required
2+ years of industry experience in machine learning, applied AI, or related fields
Bachelor's degree in a quantitative field (Computer Science, Engineering, Statistics, Physics, Applied Math); Master's or PhD preferred
Proven experience independently designing, deploying, and maintaining ML solutions in production
Strong familiarity with techniques such as tree-based models, deep learning, transfer learning, or reinforcement learning
Experience influencing technical direction and collaborating with cross-functional partners at scale
Strong communication skills, sound judgment, and an ownership mindset
Curiosity and alignment with Block's mission of economic empowerment
Preferred
Master's or PhD in a quantitative field
Benefits
Remote work
Medical insurance
Flexible time off
Retirement savings plans
Modern family planning
Company
Block
Block is one company built from many blocks, all united by the same purpose of economic empowerment.
10001+ employees
H1B Sponsorship
Block has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
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Trends of Total Sponsorships
2025 (257)
2024 (253)
2023 (260)
2022 (297)
Funding
Current Stage
Late StageLeadership Team
Amrita Ahuja
Chief Financial Officer
Lookman Olusanya
CFO, Square
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