Staff Software Engineer

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: Job Description: PayPal, Inc. seeks Staff Software Engineer in San Jose, CA Job Duties: Collaborate with cross-functional teams—including Product, Architecture, Design, and Engineering—to design, evaluate, and refine technical solutions and new product features. Analyze business and technical requirements to propose innovative, data-driven solutions, including A/B testing and KPI tracking to inform decision-making. Lead design discussions, proposing technical standards, and contributing to architectural decisions that align with organizational strategy. Identify and execute on opportunities to improve system performance through refactoring, API enhancements, and technical debt remediation. Establish best practices in code quality, system design, and engineering efficiency to enhance operational effectiveness. Serve as a key liaison between technical teams and business stakeholders to ensure transparent communication and alignment on goals and deliverables. Advocate for the use of modern technologies and frameworks and influencing technical direction through well-reasoned, actionable guidance. Mentor and guide junior engineers, fostering their professional and technical growth and promoting a collaborative and knowledge-sharing environment. Partial telecommuting permitted from within a commutable distance. Minimum Requirements: Bachelor’s degree, or foreign equivalent, in Computer Science, Engineering, or a closely related field plus eight years of experience in the job offered or a related occupation. Special Skill Requirements: 1. Object-Oriented Software Development using Java / J2EE – Experience developing backend software systems for large-scale, low-latency, or data-intensive applications using Java SE/EE, Maven, and IntelliJ/Eclipse (8 years). 2. Spring Framework and Spring Boot – Experience building modular, high-performance microservices and distributed system components using Spring Core, Spring Boot, and Spring MVC (6 years). 3. Software Testing and Quality Assurance for High-Performance Systems – Experience designing and executing unit, integration, and performance tests using JUnit, Mockito, TestNG, and JaCoCo to ensure scalability and system reliability under production-like conditions (6 years). 4. System Performance Analysis and Benchmarking – Experience developing and executing performance tests to measure latency, throughput, and reliability in distributed applications using Apache JMeter, LoadRunner, or equivalent frameworks (6 years). 5. RESTful API Design and Integration – Experience designing, implementing, and maintaining RESTful APIs for cross-system and cross-domain communication using Spring REST, JAX-RS, Swagger/OpenAPI, and Postman (5 years). 6. Data Structures and Algorithm Optimization – Experience implementing and tuning computational algorithms and data structures to improve performance efficiency and scalability using the Java Collections Framework and Streams API (5 years). 7. Messaging and Asynchronous Processing (JMS, ActiveMQ, Kafka, or similar frameworks) – Experience implementing event-driven architectures and decoupled services for reliable message delivery across distributed systems (5 years). 8. Version Control and Build Automation – Experience using Git, Maven, Jenkins, and SonarQube for source-code management, continuous integration, and automated build and deployment pipelines (5 years). 9. Concurrent and Distributed Systems Architecture – Experience designing multi-threaded, asynchronous systems ensuring high throughput and scalability using Java Concurrency utilities, ExecutorService, and ThreadPool frameworks (4 years). 10. Performance Profiling and JVM Tuning – Experience using tools such as Java Flight Recorder (JFR), JV