Staff Machine Learning Engineer

PayPal is hiring a Staff Machine Learning Engineer in Bangalore.

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. W

Requirements

• 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:

Domain 1. Knowledge of Credit, Payments or any other financial product or services domain Generative AI

• Deep expertise in foundation model development using transformer architectures, including pretraining strategies, model scaling, and optimization techniques
• Proficient in LLM fine-tuning methodologies including supervised fine-tuning (SFT), RLHF, REFT, DPO, and parameter-efficient methods such as LoRA and QLoRA
• Strong experience designing and implementing LLM guardrails, including safety filters, output validation, toxicity detection, and policy enforcement frameworks

Recommendation Systems

• Deep experience in building large scale recommender systems for product/content recommendation
• Solid understanding of foundation models for recommendation systems, including architectures such as Transformers4Rec
• Experience with RL based recommenders such as Multi-armed bandits is an added plus

Agentic AI

• Hands-on experience building production-grade Agentic AI applications, including multi-agent orchestration, tool use, memory systems, and autonomous reasoning pipelines

About PayPal

Click Here to learn more about our culture and community. Commitment to Diversity and Inclusion PayPal provides equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, pregnancy, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protecte