Comcast Cybersecurity : Security Research Engineer (Philadelphia)

Security-Focused Researcher

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Job Summary

We are hiring a security-focused researcher with a deep background in Internet measurement to develop a cryptographic inventory and visibility solution using enterprise network telemetry and Internet measurement techniques. This role combines expertise in network protocols, cryptographic standards, and telemetry analysis to build tools that provide actionable insights into cryptographic usage across enterprise, cloud, and Internet-scale environments. This role will sit with the newly created Post-Quantum Cryptography Center of Excellence within the Comcast Cyber Security (CCS) team.

Job Description

Core Responsibilities

• Design and implement a system to inventory cryptographic usage (e.g., TLS versions, cipher suites, key exchange methods) using telemetry from diverse sources such as firewalls, endpoint agents, packet captures, and flow logs.
• Analyze network traffic and metadata to extract cryptographic protocol details and assess hygiene, compliance, and risk posture.
• Design scalable custom scans and build associated data pipelines to complement existing telemetry for measuring protocol deployment and cryptographic use.
• Collaborate with internal teams and external partners to validate findings, publish research, and contribute to open-source tools.
• Stay current with evolving standards in cryptography (e.g., TLS 1.3, post-quantum crypto) and Internet protocols.

Minimum Qualifications :

Preferred Qualifications :

Employees at all levels are expected to :

Disclaimer :

Skills

Cybersecurity, Internet Measurements, Network Protocols

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Education

Bachelor's Degree : Computer and Information Science (Required) While possessing the stated degree is preferred, Comcast also may consider applicants who hold some combination of coursework and experience, or who have extensive related professional experience.

Certifications

Relevant Work Experience

5-7 Years

Comcast is an equal opportunity workplace. We will consider all qualified applicants for employment without regard to race, color, religion, age, sex, sexual orientation, gender identity, national origin, disability, veteran status, genetic information, or any other basis protected by applicable law.