Penetration Tester

Visa is a world leader in payments and technology, with over 259 billion payments transactions flowing safely between consumers, merchants, financial institutions, and government entities in more than 200 countries and territories each year. Our mission is to connect the world through the most innovative, convenient, reliable, and secure payments network, enabling individuals, businesses, and economies to thrive while driven by a common purpose – to uplift everyone, everywhere by being the best way to pay and be paid.

Make an impact with a purpose-driven industry leader. Join us today and experience Life at Visa.

Cybersecurity is at the beating heart of our business. Our diligence and expertise are what makes us undisputed leader in electronic payments. We've made it our priority to create exemplary security operations and incident response teams, poised to defend us against any potential cyber threats. We're looking for those of you who are inherently driven and fascinated by the art and science of cyber defense. We'll equip you with the very best tools and tech so that you can deliver top notch results.

Continuous self-development underpins job fulfilment at Visa. If you have a burning desire for self-development, working with us will expose you to challenges and opportunities to hone your skills. We'll provide the right environment and a plethora of top-notch professionals to learn with and from.

Essential Functions:

• The objective of Visa's Penetration Testing program is to proactively identify weaknesses and shortcomings in Visa's security posture and recommend necessary controls and procedures to protect Visa adversarial threats. With this mission in mind, our pen test experts are pro-actively involved in engagements that simulate adversarial threats & attacks in a timely manner.

• The Security Specialist will be a key contributor for performing internal and external ethical hacks of Visa applications and systems. Pentest team members also help with design, development and recommendation of security solutions to protect Visa proprietary/confidential data and systems.

• Conducting high risk and sensitive ethical hacks of internally and externally hosted applications according to scope defined by the pen test team.

• Subject matter expertise in web, mobile or network penetration testing with track record of end-to-end testing of complex systems.

• Co-ordinate and execute system/network level pen tests and ethical hacking exercises.

• Pro-actively research and Identify network and system vulnerability and provide recommended counter measures or controls to reduce risk to acceptable and manageable level.

• Reviews result of network and application ethical hacks in order to determine severity of findings and to ensure proper remediation is applied.

• Provide accurate and timely reporting of findings and proposed remediation and mitigations.

• Technical support could include but not limited to the following: (1) Audit support & remediation, (2) Process Improvement, (3) Analysis & Reporting, (4) Cross Divisional Functional education, training and awareness, (5) function/Methodology/Strategy advancement.

• Provide technical support to senior management in identifying and streamlining new/existing protocols and tools used by the penetration testing team.

• Develop and automate scripts, tools and resources needed to advance ethical hacking capabilities around new and emerging technologies like mobile, cloud and embedded systems.

This is a hybrid position. Expectation of days in office will be confirmed by your hiring manager.

Basic Qualifications:

•2+ years of relevant work experience and a bachelor's degree OR 5+ years of relevant work experience. Master's graduates must have 2+ years of relevant work experience to qualify.

Preferred Qualifications:

•3 or more years of work experience with a bachelor's degree or more than 2 years of work experience with an Advanced Degree (e.g. Masters, MBA, JD, MD)

•The candidate will ideally hold one or more of the following - CREST Certified Tester, Infrastructure or Application or other equivalent certifications

•Good knowledge on performing pen test assessments on containers and cloud environments (Azure, AWS, GCP).

•Exposure to mainframe penetration testing would be an added advantage.

•Strong understanding of cryptographic concepts and applied cryptography (SSL, AES etc.).

•Proficiency in one or more scripting language. E.g. Perl, Python, Shell Scripting etc.

•Proficiency in one or more high level programming languages like Java, C, C++, Ruby etc.

•Understanding of OWASP Top 10 and SANS Top 25 web application and network

Vulnerabilities.

•Expertise and experience in web/API application and network penetration testing.

•Knowledge of exploit development, vulnerability research/reporting or writing system modules in C & C++, a major advantage and bonus.

•Detailed understanding of OSI and TCP stack with emphasis on computer architecture and networking protocols.

•Knowledge of web application technologies and layer 7 protocols like HTTP, DHCP, DNS, FTP, etc.

•Good understanding of networking concepts around Ethernet, switched LAN and WAN environment.

•Experience with development, concepts and practical applications of Generative AI, Agentic AI or autonomous AI agents is highly desirable.

•Good understanding of AI and LLMs security concepts, through tailored penetration testing methodologies and practices.

•Practical experience of AI security assessments/development would be beneficial.

•Prior knowledge or academic familiarity with reverse engineering, malware analysis, security research and forensic tools will be an added advantage

This role qualifies for Autorskie Koszty Uzyskania Przychodu (KUP), in accordance with applicable Polish tax regulations. Eligible employees may benefit from preferential tax treatment on income derived from the creation of intellectual property, subject to meeting statutory criteria.

Visa is an EEO Employer. Qualified applicants will receive consideration for employment without regard to race, color, religion, sex, national origin, sexual orientation, gender identity, disability or protected veteran status. Visa will also consider for employment qualified applicants with criminal histories in a manner consistent with EEOC guidelines and applicable local law.