Sr. Specialist - Information Security

Key Responsibilities

• Conduct security assessments, penetration tests, red team exercises and risk evaluations across systems, networks, and applications of varying complexity.
• Detect security vulnerabilities and help design and maintain security aspect of the solutions across new and existing applications, systems architecture, and continuous integration and delivery pipelines.
• Identify and remediate complex system vulnerabilities — including web application threats, malicious code, and network-level exposures — across applications.
• Leverage AI tools to enhance team productivity and evaluate emerging technologies to drive continuous improvement in security practices.
• Prepare security risk analysis reports and develop response procedures to support informed decision-making across the organization.

Required Qualifications

• Bachelor's degree in Computer Science, Information Systems, or a related field, or equivalent practical experience.
• Active certification from a recognized security body (e.g., SANS, OffSec, or ISC2).
• 5+ years of experience in application security, information security, or a related discipline.
• Proven ability to analyze complex system vulnerabilities and develop effective technical remediation strategies.
• Strong understanding of web application security threats and secure software development practice.

Preferred Qualifications

• Experience working across cross-functional teams including technology, compliance, and risk.
• Familiarity with cloud-based environments and modern application development practices.
• Track record of integrating security practices within agile or continuous delivery workflow.

Location and Work Environment

This position will be located in Philadelphia and offers the opportunity for a hybrid work environment at least 3 days a week in-office, subject to change, providing flexibility and accessibility for qualified candidates.

About the Role

As a Senior Specialist on our Information Security Team, you'll play a critical role in protecting Nasdaq's platforms and systems by discovering security vulnerabilities and delivering security solutions across our software development and infrastructure environments. You'll thrive in this position if you're technically sharp, solutions-focused, and motivated by staying ahead of emerging threats in a fast-paced, high-impact global environment.

Benefits

• Comprehensive medical, dental and vision coverage.
• Health spending account with employer contribution.
• Paid flex days to support mental wellbeing.
• Gym membership discounts.
• Paid parental leave.
• Fertility benefits.
• Paid bereavement leave.
• Company gift matching program.
• Employee resource groups.
• Paid volunteer days.
• Education Assistance Program.
• Robust job skills training and Professional development opportunities.