Senior And Staff Machine Learning Engineers (Fintech)

TL;DR

Senior And Staff Machine Learning Engineers (Fintech): Building and optimizing ML-driven risk solutions to detect and prevent fraud and abuse across Cash App and Square with an accent on scalability and adversarial ML. Focus on designing end-to-end ML systems, implementing LLMs for customer support, and improving credit underwriting models.

Location: Remote

Company

hirify.global builds financial tools like Square, Cash App, and Afterpay to create an open economy.

What you will do

• Design and productionize ML-driven risk solutions for fraud and abuse prevention at scale.
• Own end-to-end ML systems from problem definition and modeling to deployment, monitoring, and iteration.
• Lead technical decision-making within workstreams and influence overall ML strategy and planning.
• Develop tooling and processes to improve the speed, reliability, and impact of the ML development lifecycle.
• Investigate emerging fraud and risk patterns to proactively inform product safeguards and policy.
• Collaborate with ML platform and engineering teams to ensure models operate reliably in real time.

Requirements

• 8+ 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).
• Proven experience independently designing, deploying, and maintaining ML solutions in production.
• Strong familiarity with 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.

Nice to have

• Master's or PhD in a quantitative field.
• Background in adversarial ML, NLP/LLMs, credit modeling, or model validation.

Culture & Benefits

• Remote work flexibility.
• Comprehensive medical insurance and modern family planning.
• Flexible time off and retirement savings plans.
• Mission-driven culture focused on global economic empowerment.