Staff Machine Learning Engineer
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Job Description
Staff ML Engineer setting technical direction for AI models at Payabli, a payments infrastructure platform. Building, deploying, and monitoring models across risk, authorization, disputes, and payouts.
Responsibilities:
- Set the technical direction for Payabli's model portfolio, maturing live transaction and merchant risk models and building new models across the payments lifecycle
- Establish experimentation workflows, model monitoring, drift detection, performance benchmarking, and incident response foundations
- Translate ambiguous payments problems into well-scoped modeling opportunities
- Connect model performance to business metrics such as loss rates, approval/auth rates, dispute rates, and review efficiency
- Mentor ML engineers and establish practices for the future team
- Partner with product, engineering, and risk operations to own and prioritize the ML roadmap
Requirements:
- 8+ years of ML engineering experience, with 4+ years building and shipping production models that drive real business decisions
- Track record of owning modeling architecture and seeing big, hard-to-reverse decisions through to production
- Breadth across model types and problem framing; ability to stand up a new model in an unfamiliar domain
- Proven experience taking models from prototype to production and owning them post-launch, including monitoring, retraining, and incident response
- Deep grasp of modeling tradeoffs including precision/recall vs. operational cost, explainability, latency, and regulatory/compliance considerations
- Experience establishing ML processes and infrastructure that a growing team inherits
- Ability to communicate model behavior and business impact to non-ML stakeholders
- Comfortable in a fast-moving startup environment
- Familiarity with AWS ML tools such as SageMaker, feature stores, training/inference pipelines, and MLOps tooling is a nice to have
- Payments, fintech, or lending experience is a nice to have
- Interest in growing into people leadership is a nice to have
- Must be legally authorized to work in the United States
- Must apply directly; no third-party recruiter or staffing agency submissions
Benefits:
- Stock options with the potential to unlock more equity as we grow
- Flexible PTO and paid parental leave
- Medical, dental, & vision insurance
- 401K, HSA, pre-tax savings programs
- Competitive salary
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