Comcast Cybersecurity: Principal Security R&D Engineer

Comcast • Philadelphia, PA

2d

About The Position

Make your mark at Comcast -- a Fortune 30 global media and technology company. From the connectivity and platforms we provide, to the content and experiences we create, we reach hundreds of millions of customers, viewers, and guests worldwide. Become part of our award-winning technology 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. Join us. You’ll do the best work of your career right here at Comcast. (In most cases, Comcast prefers to have employees on-site collaborating unless the team has been designated as virtual due to the nature of their work. If a position is listed with both office locations and virtual offerings, Comcast may be willing to consider candidates who live greater than 100 miles from the office for the remote option.) Job Summary We are seeking a highly skilled and innovative Principal Cybersecurity Engineer to lead research and development of advanced security solutions with a focus on security engineering, system design, and embedded technologies. This role is critical to building next-generation secure platforms and solutions and preparing Comcast systems for future challenges, including post-quantum cryptography (PQC). The ideal candidate will have strong security engineering and embedded programming expertise, research experience, and understanding of cryptographic principles. This position emphasizes security engineering, system architecture, and hardware/software integration, while leveraging cybersecurity and privacy knowledge to build robust security solutions. The candidate will work on building proof-of-concept (POC) models, conducting research, and driving innovation in secure system design.

Requirements

• Bachelor's degree in computer science, Cybersecurity, or a related technical field with 4+ years of professional experience OR equivalent.
• Strong understanding of cybersecurity and privacy engineering principles and network protocols (e.g., TLS, IPsec, DNSsec ).
• Proficiency in development and engineering skills using languages such as Python and C .
• Familiarity with cryptographic algorithms (RSA, ECC, AES) and digital signatures.
• Ability to learn and work independently, with strong communication and problem-solving skills.

Nice To Haves

• Master’s or Ph.D. in Computer Science, Cybersecurity, or related technical field.
• Experience with or familiarity with cryptography and post-quantum cryptography.
• Contributions to open-source security tools or frameworks.
• Track record of publications, contributions to patents, and active involvement in cybersecurity research and engineering projects.

Responsibilities

• Develop and integrate open-source security solutions with existing systems.
• Research and prototype new cybersecurity and privacy technologies, including cryptographic mechanisms.
• Develop and optimize embedded software solutions in languages such as C/C++ and Python.
• Collaborate with internal teams and external partners to validate findings, publish research, and contribute to open-source tools.
• Build proof-of-concept models to validate security designs and performance in real-world environments.
• Stay current with evolving standards in cryptography (e.g., TLS 1.3, post-quantum crypto) and network security.
• Collaborate with software, hardware, and device teams to ensure seamless integration of security features into embedded, software, and hardware platforms.

Benefits

• We believe that benefits should connect you to the support you need when it matters most, and should help you care for those who matter most. That's why we provide an array of options, expert guidance and always-on tools that are personalized to meet the needs of your reality—to help support you physically, financially and emotionally through the big milestones and in your everyday life.
• Please visit the benefits summary on our careers site for more details.

What This Job Offers

• Job Type: Full-time
• Career Level: Mid Level
• Number of Employees: 5,001-10,000 employees