Responsibilities
Set the technical direction for Payabli’s model portfolio, including existing transaction- and merchant-risk models and new payments lifecycle models.
Establish experimentation workflows, model monitoring, drift detection, performance benchmarking, retraining, and incident-response foundations.
Translate ambiguous payments problems into modeling opportunities and communicate model performance in terms of business impact.
Own and prioritize the ML roadmap with product, engineering, and risk operations.
Mentor ML engineers and raise technical standards through influence, example, and durable engineering practices.
Requirements
Require 8+ years of ML engineering experience, including 4+ years building and shipping production models that drive business decisions.
Demonstrated ownership of modeling architecture and significant technical decisions through production.
Breadth across model types and problem framing, with the ability to build models in unfamiliar domains.
Experience taking models from prototype to production and owning monitoring, retraining,



and incident response after launch.
Deep understanding of precision/recall, operational cost, explainability, latency, and regulatory or compliance tradeoffs.
Experience establishing ML processes and infrastructure for a growing team.
Strong technical leadership, coding, design-review, communication, and stakeholder collaboration abilities.
Comfort working in a fast-moving startup environment with a bias toward shipping.
Payments, fintech, lending, risk, underwriting, fraud, credit modeling, chargebacks, merchant risk, KYC/KYB, or authorization/routing experience is preferred.
Familiarity with AWS ML tools such as SageMaker, feature stores, training and inference pipelines, and MLOps tooling is preferred.
Interest in potentially developing into people leadership is preferred but not required.
Benefits
~ Competitive salary and stock options with potential for additional equity as the company grows.
~ Fle

📌 Staff Machine Learning Engineer (España)
🏢 Payabli
📍 España