# Senior Machine Learning Engineer - Infra/Ops - Fraud

**Company:** [Plaid](https://hotfix.jobs/companies/plaid)
**Location:** New York, NY, Seattle, WA, San Francisco, CA
**Role:** ML Engineering
**Salary:** $229k – $315k/yr
**Experience:** 6+ years
**Skills:** Python, PyTorch, Spark, Amazon Sagemaker, Apache Airflow, ML Infrastructure, Machine Learning Operations, Online Inference, Feature Engineering, Model Monitoring, Graph Machine Learning, Fraud Detection
**Posted:** 2026-09-12

> Senior Machine Learning Engineer building and scaling production fraud-detection systems, including feature pipelines, online inference, monitoring, and reliability capabilities. Requires 6+ years of experience with ML infrastructure and technologies such as Python, PyTorch, Spark, SageMaker, and Airflow.

## Job Description

## Responsibilities
- Build and scale machine learning systems for fraud detection.
- Solve technical challenges across machine learning, data infrastructure, and production reliability.
- Develop foundational ML capabilities using financial network data to detect and prevent fraud.
- Own development of feature computation and online inference pipelines for production ML systems.
- Build observability, monitoring, and automated debugging capabilities.
- Collaborate with engineers, data scientists, ML infrastructure, and product teams on high-impact initiatives.

## Requirements
- 6+ years of relevant experience building, deploying, and scaling production machine learning systems.
- Strong experience with ML infrastructure and operations, including production deployment, monitoring, and reliability.
- Ability to independently own and deliver complex, end-to-end ML engineering projects.
- Proficiency with Python.
- Experience with PyTorch, Spark, SageMaker, and Airflow.

## Nice-to-haves
- Experience in fraud or risk domains.
- Experience with graph machine learning.

## Compensation and benefits
- Annual salary range of $228,960–$315,360.
- Additional compensation may include equity and/or commission.
- Benefits include medical, dental, vision, and 401(k).

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