The Company PayPal has been revolutionizing commerce globally for more than 25 years. Creating innovative experiences that make moving money, selling, and shopping simple, personalized, and secure, PayPal empowers consumers and businesses in approximately 200 markets to join and thrive in the global economy. We operate a global, two-sided network at scale that connects hundreds of millions of merchants and consumers. We help merchants and consumers connect, transact, and complete payments, whether they are online or in person. PayPal is more than a connection to third-party payment networks. We provide proprietary payment solutions accepted by merchants that enable the completion of payments on our platform on behalf of our customers. We offer our customers the flexibility to use their accounts to purchase and receive payments for goods and services, as well as the ability to transfer and withdraw funds. We enable consumers to exchange funds more safely with merchants using a variety of funding sources, which may include a bank account, a PayPal or Venmo account balance, PayPal and Venmo branded credit products, a credit card, a debit card, certain cryptocurrencies, or other stored value products such as gift cards, and eligible credit card rewards. Our PayPal, Venmo, and Xoom products also make it safer and simpler for friends and family to transfer funds to each other. We offer merchants an end-to-end payments solution that provides authorization and settlement capabilities, as well as instant access to funds and payouts. We also help merchants connect with their customers, process exchanges and returns, and manage risk. We enable consumers to engage in cross-border shopping and merchants to extend their global reach while reducing the complexity and friction involved in enabling cross-border trade. Our beliefs are the foundation for how we conduct business every day. We live each day guided by our core values of Inclusion, Innovation, Collaboration, and Wellness. Together, our values ensure that we work together as one global team with our customers at the center of everything we do – and they push us to ensure we take care of ourselves, each other, and our communities. Job Summary: Join PayPal’s Consumer Product Catalog and Consumer Search team and help build the next generation of product discovery for millions of global shoppers. We own the backend and data infrastructure that powers search, recommendations, and catalog knowledge at global scale. As a Machine Learning Engineer, you’ll contribute to key components of the product search stack - including indexing pipelines, and query-time services that deliver fast and relevant search results. You’ll collaborate closely with backend engineers and catalog data teams to enable intelligent, contextual, and scalable search capabilities. We’re looking for motivated and collaborative engineers who thrive on solving complex problems in large-scale search systems. You will work on challenges such as query and document understanding, product entity modeling and enrichment, taxonomy structuring, retrieval and ranking algorithms, and search quality evaluation. You will build models that enhance search relevance and ranking, delivering highly relevant results to users across the PayPal ecosystem. The ideal candidate brings strong experience in machine learning systems, takes ownership of the project from research and prototyping to production deployment, and is eager to shape modern, AI-powered search experiences. Job Description: Essential Responsibilities: Lead the development and optimization of advanced machine learning models. Oversee the preprocessing and analysis of large datasets. Deploy and maintain ML solutions in production environments. Collaborate with cross-functional teams to integrate ML models into products and services. Monitor and evaluate the performance of deployed models, making necessary adjustments. Expected Qualifications: 5+ years relevant experience and a Bachelor’s degree OR Any equivalent combination of education and experience. Extensive experience with ML frameworks like TensorFlow, PyTorch, or scikit-learn. Expertise in cloud platforms (AWS, Azure, GCP) and tools for data processing and model deployment. Additional Responsibilities & Preferred Qualifications : 8 + years of industry experience with deep learning architectures, building , fine -tuning and deploying ML model s in production . Strong proficiency in Python, Scala, or other programming languages. Experience working with large datasets, data processing pipelines (e.g., Dataflow, Spark, Flink), and scalable architectures. Strong communication and collaboration skills, with the ability to work effectively across teams and contribute to a high-performing engineering culture. Experience working on search or recommendation systems at scale. Familiarity with A/B testing and experimentation methodologies for search relevance improvement. PayPal is committed to fair and equitable c