Senior Cybersecurity 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: The Offensive Security team helps protect PayPal and its brands by testing products, applications, networks, cloud environments, infrastructure, and emerging technologies. We work closely with engineering and infrastructure teams to identify security issues, explain the risk, and support effective remediation. This role combines hands-on penetration testing with vulnerability validation across application, network, and cloud environments. You will review findings from AI assisted code reviews and other automated security tools, reproduce potential vulnerabilities, and assess their exploitability and business impact. You will also perform targeted manual testing and secure code reviews to identify complex issues, including business logic weaknesses that automated tools may not fully understand. Job Description: Essential Responsibilities: • Independently apply security best practices to enhance and optimize systems, ensuring robust protection and efficiency, while beginning to understand and align security solutions with business objectives. • Partner with peers and internal teams to drive security initiatives, contribute to cross-functional projects, and at times co-lead efforts to strengthen security posture. • Analyze and resolve security challenges by adapting standard processes and exploring alternative approaches to address complex threats. • Influence the quality, efficiency, and effectiveness of the team through informed decision-making, with a potential impact on other teams. • Collaborate with other engineers to gather and incorporate feedback, driving continuous improvements in security processes. Minimum Qualifications: • 3+ years relevant experience and a Bachelor’s degree OR Any equivalent combination of education and experience. Additional Responsibilities & Preferred Qualifications : The Offensive Security team works with groups across PayPal to assess the security of products, networks, and technologies throughout the product development life cycle. The team performs authorized testing across web, mobile, API, thick client, network, cloud, infrastructure, and other technology environments. The successful candidate will be comfortable working with product, infrastructure, and engineering teams and will provide clear technical context, reproduction steps, realistic attack scenarios, and practical remediation guidance. In your day-to-day role you will be responsible for: • Scope and perform penetration tests from planning through reporting and remediation support. • Perform hands-on testing of web applications, mobile applications, APIs, and internal infrastructure. • Perform network penetration testing and segmentation testing across internal, external, and cloud network environments. • Perform cloud penetration testing across cloud service provider environments, assessing configuration weaknesses, identity and access issues, and privilege escalation paths. • Review and validate potential vulnerabilities identified through AI assisted code reviews and other automated security tools. • Reproduce findings and assess exploitability, business impact, severity, remediation priority, and whether a finding is a false positive. • Understand cloud environments, network architectures, identity flows, and common attacker techniques. • Evaluate AI and ML systems and use automation to improve the efficiency and depth of testing. • Communicate findings with clear context, reproduction steps, attack scenarios, and practical remediation guidance. • Support engineering and infrastructure teams through remediation and closure of security findings. • Assess systems against requirements such as PCI DSS and provide actionable remediation guidance. • Conduct security re…