Senior Cybersecurity Engineer at PayPal

PayPal; Singapore; Hybrid; SGD 120,000 - 180,000; Full time

Job summary

PayPal’s Offensive Security team in Singapore seeks an experienced security engineer to perform hands-on penetration testing across web, mobile, API, cloud, and internal infrastructure. You will reproduce findings, assess exploitability, and provide practical remediation guidance to engineers and product teams.

You will review AI-assisted code reviews, validate vulnerabilities, and communicate risk with clear context and remediation steps, partnering with product, infra, and engineering teams to

Qualifications

• 3+ years hands-on penetration testing experience.
• Bachelor’s degree or equivalent in Information Security, Computer Science, or related field.

Responsibilities

• Independently apply security best practices to enhance systems and align security solutions with business objectives.
• Partner with peers and internal teams to drive security initiatives and co-lead efforts to strengthen security posture.
• Analyze and resolve security challenges by adapting standard processes and exploring alternative approaches.
• Influence the quality, efficiency, and effectiveness of the team through informed decision-making.
• Collaborate with other engineers to gather feedback and drive continuous security improvements.

Skills

Penetration testing

Security assessment

Cloud security

Network security

Web/mobile testing

Education

Bachelor’s degree in Information Security/Computer Science or related field

Tools

MITRE ATT&CK

PTES

OWASP

Job description

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 research and contribute to other Offensive Security initiatives as needed.

What do you need to bring

• Bachelor's degree or higher in Information Security, Computer Science, or a related technical discipline.


• At least five years of hands‑on penetration testing experience, including the ability to manage assessments from scoping through reporting and remediation support.


• Strong hands‑on experience across one or more penetration testing domains such as network, cloud, web application, mobile, or thick client, with the ability to work across multiple domains.


• Knowledge of application and network security, cloud environments, identity flows, and the MITRE ATT\\&\\CK framework.


• Experience with testing approaches such as PTES and OWASP.


• Proficiency in at least one scripting language, such as Python, PowerShell, or Perl.


• Strong writing, communication, attention to detail, and critical thinking skills.


• Security certifications such as OSCP, OSCE, OSEE, or GPEN are a plus.

Subsidiary: PayPal Travel Percent: 0

For the majority of employees, PayPal's balanced hybrid work model offers 3 days in the office for effective in‑person collaboration and 2 days at your choice of either the PayPal office or your home workspace, ensuring that you equally have the benefits and conveniences of both locations.

Our Benefits

• We strive to create a flexible, balanced work culture with a holistic approach to benefits, including generous paid time off, healthcare coverage for you and your family, and resources to create financial security and support your mental health.

Who We Are

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 protected by federal, state, or local law. In addition, PayPal will provide reasonable accommodations for qualified individuals with disabilities. If you are unable to submit an application because of incompatible assistive technology or a disability, please contact us at [e-mail].

Belonging at PayPal

Our employees are central to advancing our mission, and we strive to create an environment where everyone can do their best work with a sense of purpose and belonging. Belonging at PayPal means creating a workplace with a sense of acceptance and security where all employees feel included and valued. We are proud to have a diverse workforce reflective of the merchants, consumers, and communities that we serve, and we continue to take tangible actions to cultivate inclusivity and belonging at PayPal.

We know the confidence gap and imposter syndrome can get in the way of meeting spectacular candidates.