PayPal · 2 hours ago
Sr Machine Learning Engineer
San Jose, CA
Full-time
Hybrid
Mid, Senior Level
$138K/yr - $236K/yr
3+ years expPayPal has been revolutionizing commerce globally for more than 25 years. This role involves designing, developing, and implementing machine learning models and algorithms to solve complex problems, while collaborating with data scientists, software engineers, and product teams to enhance services through innovative AI/ML solutions.
E-Commerce PlatformsFinTechMobile PaymentsTransaction Processing
Responsibilities
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
Qualification
Required
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
Preferred
Experience with AI or agentic systems, including exposure to LLM-based agents, autonomous decision-making components, or multi-agent workflows; ability to integrate or operationalize these capabilities within data or ML solutions
Research experience in ML/AI areas with publications or open-source contributions a plus
Experience with transformer-based architectures (e.g., BERT, GPT, T5), including fine-tuning and domain adaptation
Knowledge of reinforcement learning, including policy optimization, value function approximation, or bandit algorithms
Hands-on experience with graph-based models (e.g., GCN, GraphSAGE, GAT) or graph representation learning
Experience with semi-supervised, self-supervised, or unsupervised representation learning
Knowledge of causal inference, anomaly detection, and incremental/continual learning
Exposure to synthetic data generation techniques for model training or evaluation
Prior work in fraud detection, risk modeling, or other high-impact, high-noise domains
Benefits
Flexible work environment
Employee shares options
Health and life insurance
Company
PayPal
PayPal is a financial service company that provides online payment solutions to its users worldwide.
10001+ employees
H1B Sponsorship
PayPal has a track record of offering H1B sponsorships. Please note that this does not
guarantee sponsorship for this specific role. Below presents additional info for your
reference. (Data Powered by US Department of Labor)
Distribution of Different Job Fields Receiving Sponsorship
Represents job field similar to this job
Trends of Total Sponsorships
2025 (945)
2024 (918)
2023 (775)
2022 (921)
2021 (1051)
2020 (1049)
Funding
Current Stage
Public CompanyTotal Funding
$12.17BKey Investors
Kohlberg Kravis RobertsBlueRun Ventures
2025-11-17Post Ipo Debt· $6.95B
2023-06-07Post Ipo Debt· $5B
2015-07-20IPO
Leadership Team
Simon Bladon
CEO, UK
chaloem khompitoon
President & CEO
Recent News
2025-12-31
The European Financial Review
2025-12-31
Company data provided by crunchbase