Comcast Cybersecurity: Principal Cybersecurity Engineer - HSM and IoT Security

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

In this role, the Principal Cybersecurity Engineer will lead the design, development, and deployment of advanced security frameworks encompassing Public Key Infrastructure (PKI), Hardware Security Modules (HSMs), Blockchain technologies, Secure Elements, and cryptographic token management for both embedded systems and enterprise platforms.

The ideal candidate will possess extensive hands-on experience in HSM administration (with a strong preference for Thales devices), X.509 certificate lifecycle management, and cryptographic key management operations. The engineer will collaborate closely with internal teams and external partners to translate complex security requirements into scalable, resilient, and compliant solutions.

This role requires a highly adaptable professional who can quickly master new languages and technologies, thrive in a dynamic environment, and work effectively across teams. A strong emphasis is placed on innovation, continuous improvement, and delivering secure, future-ready solutions.

Job Description

Core Responsibilities

• Design, develop, and implement advanced security software, frameworks, and applications supporting PKI, HSM, IoT, and cryptographic systems.

• Lead the architecture and deployment of secure communication protocols, certificate management systems, and cryptographic key infrastructures.

• Customize and enhance existing security applications while developing processes for software updates, patch management, and version control.

• Provide technical leadership and establish best practices, procedures, and guidelines for secure system design and implementation.

• Partner with Quality Assurance and DevSecOps teams to validate that all software and hardware integrations meet security and regulatory requirements.

• Collaborate with internal engineering, infrastructure, and security operations teams to align cybersecurity solutions with business and compliance needs.

• Demonstrate deep knowledge of cryptographic engineering concepts and methodologies, applying them effectively in enterprise and IoT environments.

• Other duties and responsibilities as assigned.

Required Qualifications and Experience:

• Bachelor's and/or Master’s degree in Computer Science, Information Security, or a related technical field

• 12+ years of professional experience in cybersecurity engineering or secure embedded software development

• Proven experience with Hardware Security Modules (HSMs), preferably Thales Luna or similar

• Strong knowledge of Public Key Infrastructure (PKI), X.509 certificate management, and cryptographic key operations

• Hands-on experience with IoT security frameworks, secure boot, and device identity management

• Solid understanding of encryption algorithms, digital signatures, and secure communication protocols (TLS, SSH, IPsec)

• Proficiency in C/C++, Python, or Java, with a good grasp of operating system fundamentals and secure coding practices

• Familiarity with Continuous Integration and Deployment tools (Jenkins, Concourse)

• Deep understanding of the HTTP/S protocol and web security concepts

• Experience working in Agile/Scrum development environments

• Strong critical thinking, independent problem-solving, and adaptability to new technologies

• Collaborative experience in multi-company or open-source industry projects

• Regular, consistent, and punctual attendance

Additional Preferred Skills

• Experience with Thales, Cybertrust or n