Cybersecurity Applied Scientist, PhD Intern - Summer 2026

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.

Visa's Internship Program provides an immersive, 12-week journey whereyou'llwork on impactful projects that drive Visa's mission forward. As a Visa intern,you'llbuild valuable connections across the organization, sharpen your communication and business acumen, and gain hands-on experience in a dynamic, global environment.

Throughout the program,you'llhave exclusive access to interactive workshops and learning sessions designed to deepen yourexpertise, expand your industry knowledge, and elevate your professional skillset. Youwon'tjust belearning,you'llbe contributing, collaborating, and innovating every step of the way.In addition to professional development,you'llenjoy a variety of intern social events that foster community, connection, and fun throughout the summer.

The experience culminates in an exciting final presentation, whereyou'llshowcaseyour project achievements, share key insights, and present your recommendations to Visa's leaders and stakeholders. This is your chance todemonstrateyour business impact, highlight your personal growth, and align your work with Visa's vision for the future.

The Cybersecurity AI Center of Excellence drives research and development of nextgeneration AIenhanced security capabilities to protect largescale, missioncritical systems. Our teams work at the intersection of artificial intelligence, adversarial resilience, and cybersecurity operations-developing technologies that safeguard billions of transactions worldwide.

This intern role offers the opportunity to contribute to cuttingedge AI security research, consistent with the scope outlined in prior PhD cybersecurity internships.

Some job duties and projects could include:

• AI enablement in cybersecurity- leveraging frontier AI techniques to improve threat detection, authentication, incident response, and security automation.
• Security of AI agents and AInative systems- designing evaluations, identifying vulnerabilities, and exploring defenses for modern agentic AI frameworks.
• Conduct applied research on AIenabled security capabilities (e.g., agentbased threat modeling, AIdriven detection systems, security analytics).
• Investigate the security of AI agents, including adversarial behaviors, misuse risks, attack vectors, and mitigation techniques.
• Experiment with and evaluate the latest AI agent frameworks.
• Develop research prototypes, tools, and experimental pipelines.
• Collaborate with crossfunctional security, product, and engineering teams; present findings regularly.
• Contribute to internal tech reports, demos, or publications.

You will collaborate with worldclass cybersecurity, AI, and engineering teams to design experiments, develop prototypes, analyze largescale data, and present insights to technical stakeholders.

Basic Qualifications

• Students pursuing a Ph.D. with a graduation date in December 2026 or later
• Strong communications skills, specifically, the absence of repeated grammatical or typographical errors, clear and concise written and spoken communications that demonstrate professional judgment.

Preferred Qualifications

• Strong understanding of modern AI research, including foundation models, agents, and AI security.
• Handson familiarity with nextgeneration AI agent frameworks(MCP, A2A, LangChain, CrewAI, etc.).
• Working knowledge of Python, Java, and/or JavaScript.
• Strong understanding of Linux systemsand computer networking fundamentals.
• Familiarity with major cloud environments(AWS, GCP, Azure, OCI, etc.).
• Research experience in cybersecurity, AI security, adversarial machine learning, or systems security (consistent with themes from internal PhD research JDs).
• Experience with agent orchestration, LLMbased automation, or distributed systems.
• Experience with computer use agents and the underlying mechanisms.
• Experience designing experiments or evaluations for AI systems.
• Publication record in AI/ML, security, systems, or related fields.
• Excellent written and verbal communication skills.
• Demonstrated ability to think outside the box and innovate.
• The ability to take on challenges and address problems head-on
• Strong ability to collaborate
• Highly driven, resourceful and results oriented
• Good team player and excellent interpersonal skills
• Good analytical and problem-solving skills
• Demonstrated ability to lead and navigate through ambiguity

U.S. APPLICANTS ONLY:The estimated hourly range for a new hire into this position is $54/hr to $62/hr which may include potential sales incentive payments (if applicable). Salary may vary depending on job-related factors which may include knowledge, skills, experience, and location.

Work Hours:Varies upon the needs of the department.

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

Travel Requirements:This position requires travel5-10% of the time.

Mental/Physical Requirements:This position will be performed in an office setting. The position will require the incumbent to sit and stand at a desk, communicate in person and by telephone, frequently operate standard office equipment, such as telephones and computers.

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.

Visa will consider for employment qualified applicants with criminal histories in a manner consistent with applicable local law, including the requirements of Article 49 of the San Francisco Police Code.