Principal Penetration Tester Jobs

Principal Penetration Tester

Comcast

Location:
United States , Philadelphia ▼
Colorado
Maryland
Virginia
Texas

Category:
IT - Software Development

Contract Type:
Not provided

Salary:

117225.34 - 224681.90 USD / Year

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Job Description:

Make your mark at Comcast -- a Fortune 30 global media and technology company. Become part of our award-winning, international engineering team that turns big ideas into cutting-edge products, platforms, and solutions that our customers love. We create space to innovate, and we recognize, reward, and invest in your ideas, while ensuring you can proudly bring your authentic self to the workplace. You’ll do the best work of your career right here. We are looking for an experienced Principal Penetration Tester (Engineering Level 5) to join our Penetration Testing Team. In this role, you will be responsible for conducting a variety of Pen Tests, including web application, network, mobile, and cloud penetration testing, as well as participating in red team exercises. You’ll also contribute to ongoing efforts to strengthen our security infrastructure and offensive capabilities. As a senior team member, you’ll have the opportunity to take ownership of projects, mentor junior team members, and collaborate with cross-functional teams to assess and remediate vulnerabilities. We foster a collaborative environment where continuous learning and growth are encouraged.

Job Responsibility:

Perform vulnerability scanning and penetration testing across diverse systems, applications, technologies and environments.
Identify program improvement opportunities and develop processes to mature and scale the Pen Testing program.
Present thought leadership in new and emerging advanced security trends, vulnerabilities and attack techniques
Lead security research and development efforts and provide technical leadership.
Develop remediation strategies and architect solution to challenging cybersecurity gaps.
Execute application penetration tests for APIs, mobile SDKs, cloud environments and web applications from both open and closed-box perspectives.
Analyze and prioritize findings based on the Common Vulnerabilities and Exposures (CVE) database, the Common Vulnerability Scoring System (CVSS) and internal Risk Rating system.
Contribute to and maintain the team’s tools, labs, and attack infrastructure
actively share knowledge through internal wikis and repositories.
Effectively communicate findings and recommendations to both technical and non-technical stakeholders, preparing comprehensive reports and presentations.
Stay informed on the latest cybersecurity trends, techniques, and vulnerabilities by following industry publications and threat feeds.

Requirements:

5+ years of experience in penetration testing with hands-on experience using tools like Burp Suite, Nmap, Metasploit, Nessus etc.
Advanced proficiency in cloud platforms - AWS, GCP, Azure and mobile app security testing.
Stay current with emerging threats and techniques in AI/ML security.
Complete understanding of the OWASP Top 10, CVSS, and CVE databases.

Nice to have:

Extensive experience in strategic planning and executing large-scale, enterprise-wide security initiatives to address complex security challenges.
Proven experience in leading security research and development initiatives. Contributions such as research publications, CVEs, CTF participation, and conference presentations are considered valuable additions.
Demonstrated ability to work independently on complex assessments while collaborating with cross-functional teams.
Proven expertise in mentoring and providing guidance to junior team members
Strong scripting experience with Python, Bash, Ruby, C/C++, C#, or Java to automate testing processes and streamline remediation.
Strong analytical, problem-solving, and communication skills, with attention to detail and a proactive mindset.
Strong presentation skills
Certifications such as: OSCP, OSWA, OSWE or similar.

What we offer:

Medical & Dental
401(k) Savings Plan
Generous paid time off
Life Milestones - from adoption assistance, childcare resources, pet insurance, and more, Comcast supports you at all life stages.
Courtesy Services - We offer all of our full-time employees in serviceable areas free digital TV and internet.
Discount tickets for Universal Resorts, including theme park tickets and onsite hotel rooms.

Additional Information:

Job Posted:
December 26, 2025

Employment Type:

Fulltime

Work Type:

On-site work

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