Sr Machine Learning Engineer

PayPal • San Jose, CA

8h

About The Position

Develop and optimize machine learning models for various applications. Preprocess and analyze large datasets to extract meaningful insights. Deploy ML solutions into production environments using appropriate tools and frameworks. Collaborate with cross-functional teams to integrate ML models into products and services. Monitor and evaluate the performance of deployed models.

Requirements

• 3+ years relevant experience and a Bachelor's degree OR Any equivalent combination of education and experience
• Experience with ML frameworks like TensorFlow, PyTorch, or scikit-learn
• Familiarity with cloud platforms (AWS, Azure, GCP) and tools for data processing and model deployment
• Several years of experience in designing, implementing, and deploying machine learning models
• Advanced degree (Master's or Ph.D.) in a quantitative discipline such as Statistics, Mathematics, Computer Science, Engineering, or a related field
• Strong knowledge of statistical and machine learning techniques, including but not limited to logistic regression, time-series modeling, random forests, support vector machines, gradient boosting (e.g., XGBoost), and deep learning architectures (e.g., CNNs, RNNs)
• Proficiency in programming and big-data technologies, with hands-on experience in tools such as Python (Scikit-learn, TensorFlow), SQL, Hadoop, and Spark
• Relevant modeling experience in one or more of the following domains: credit risk scoring, fraud detection, financial forecasting, or marketing analytics - gained through industry or academic research
• Strong collaboration and communication skills, with the ability to work effectively both independently and as part of a cross-functional team
• Ability to articulate complex technical concepts clearly to non-technical stakeholders and build constructive working relationships across functions

Nice To Haves

• Experience with Large Language Models (LLMs), Agentic AI, or related generative AI applications
• Familiarity with model governance, model risk management, or AI regulatory compliance frameworks (e.g., SR 11-7, OCC 2011-12, EU AI Act) is a plus

Responsibilities

• Develop and optimize machine learning models
• Preprocess and analyze large datasets
• Deploy ML solutions into production environments
• Collaborate with cross-functional teams to integrate ML models
• Monitor and evaluate the performance of deployed models

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees