Comcast Cybersecurity: Network Security Engineer – Post-Quantum Cryptography

Comcast Cybersecurity: Network Security Engineer – Post-Quantum Cryptography

Requirements

• Bachelor’s degree in computer science, Network Security, IT, or similar technical field with 5 years of professional experience OR Master’s degree in Computer Science, Network Security, IT, or similar technical field with 3 years of professional experience OR equivalent.
• Solid understanding of various protocols like TLS, X.509, BGP, DHCP, IPsec, DNSsec, etc.
• Knowledge of networking principles and components like firewalls, routers, switches, load balancers, servers, etc.
• At least 2 years of experience working with network packet capture tools like WireShark, tcpdump, nmap, or similar.
• Well-versed in PKI and OCSP.
• Understanding of cryptographic algorithms (RSA, ECC, AES) and digital signatures.
• Ability to learn and work independently, along with strong communication, and a strong work ethic.

Responsibilities

• Builds tools and technologies to enable discovery of cryptographic assets across Comcast using network and infrastructure telemetry data.
• Works closely with stakeholders to gather requirements to prototype, develop, validate, and build systems to support quantum-ready encryption.
• Implements technologies and associated roadmaps to create new telemetry for cryptographic inventorying.
• Designs, implements, and evaluates PQC-enabled network protocols for different layers of the OSI model, e.g., PQC-enabled TLS.
• Supports evaluation of vendor provided and open-source solutions for PQC transition.
• Participates in standards organizations and coalitions like IETF, MITRE PQCC, etc.
• Implements automation tools and frameworks (CI/CD pipelines) following secure design principles.
• Presents findings and roadmaps to executive leadership and contributes to organizational post-quantum strategy.
• Develops specifications, technical requirements and algorithms for future products and applications.
• Provides technical solutions to a wide range of difficult problems. Independently determines and develops approach to solutions.
• Tests and evaluates solutions presented to the Company by various internal and external partners and vendors. Completes case studies, testing and reporting.
• Designs prototypes and contributes to studies to support product or application development.
• Organizes and maintains resources. Researches, writes and edits documentation and technical requirements, including evaluation plans, confluence pages, white papers, presentations, test results, technical manuals, formal recommendations and reports. Contributes to the company by creating patents, API’s and other intellectual property. Presents papers and attends conferences.
• Collaborates with teams outside of immediate work group. Represents the work team in providing solutions to technical issues associated with assigned projects.
• Provides guidance and leadership to more junior researchers. Collaborates within and across teams. Deciphers tasks into functional components.
• Consistent exercise of independent judgment and discretion in matters of significance.
• Regular, consistent and punctual attendance. Must be able to work nights and weekends, variable schedule(s) and overtime as necessary.
• Other duties and responsibilities as assigned.

Preferred Qualifications

• PhD in Computer Science, Network Security, IT, or similar technical field.
• Deep knowledge of cryptographic algorithms, interest in Post-Quantum Cryptography algorithms like ML-KEM, and familiarity with NIST PQC standards and guidelines.
• Knowledge of cloud infrastructure (like AWS, Azure, Google).
• Good understanding of API development, deployment, and integration experience.
• Working experience in any one of the SQL databases, Databricks, Snowflake, or similar.