Cyber Security Engineer - RADIUS, TACACS+

Comcast; Mount Laurel Township (NJ); On-site; USD 105,000 - 157,000; Full time

Job summary

Comcast is seeking an experienced Cybersecurity Engineer to design secure architecture and IAM solutions for our hybrid cloud environment in New Jersey. The role focuses on building robust authentication, authorization, and security automation capabilities across Linux/Unix and network devices.

The position requires 5+ years in cybersecurity engineering or IAM, with strong knowledge of RADIUS, TACACS+, LDAP, TLS, EAP-TLS, and mTLS, plus experience with Azure Entra ID and Secrets Management.

Qualifications

• Bachelor's degree in a relevant field required or related experience.
• Master's degree preferred for advanced cybersecurity roles.
• Experience implementing AAA and IAM solutions in hybrid cloud environments.

Responsibilities

• Design and implement secure architecture and AAA solutions for network devices and Linux/Unix environments.
• Develop and integrate authentication and authorization technologies including RADIUS, TACACS+, LDAP, TLS, EAP-TLS, and mTLS.
• Support identity services leveraging Azure Entra ID, Secrets Management, and certificate-based authentication.
• Conduct security assessments, audits, and risk analyses to identify vulnerabilities and drive remediation efforts.
• Automate manual IAM and access management workflows to improve efficiency and reduce operational risk.
• Build and integrate Agentic AI solutions to automate authentication and authorization processes, improve decision-making, and enhance observability and auditability.
• Develop scalable full-stack applications and security automation solutions using Python, Perl, Node.js, and React.
• Design and implement integrations using REST APIs, message queues, and enterprise identity platforms.
• Participate in all phases of the software development lifecycle, including requirements gathering, architecture, design, testing, deployment, and production support.
• Investigate and respond to security incidents, perform root cause analysis, and implement corrective actions.
• Document technical solutions, processes, and recommendations for leadership and stakeholders.
• Provide technical guidance to project teams and junior engineers.
• Collaborate across engineering, infrastructure, and cybersecurity organizations to deliver secure, scalable solutions.

Skills

Authentication

Requirements Analysis

RADIUS AAA

Identity Access Management (IAM)

Python

TACACS+

Education

Bachelor's degree in Computer Science, Cybersecurity, Engineering, or related field

Master's Degree

Job description

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

This job ensures the integrity and security of the company's cyber infrastructure by designing robust system architecture. It also entails solving complex engineering challenges. It involves documenting technical processes, reporting outcomes, and recommending innovative solutions. The role supports project teams and influences engineering staff, while maintaining a comprehensive understanding of network protocols and security strategies. The position requires flexibility to work variable schedules, including nights and weekends, as necessary.

Job Description

What You’ll Do:

Cybersecurity & IAM Engineering

• Design and implement secure architecture and AAA solutions for network devices and Linux/Unix environments.
• Develop and integrate authentication and authorization technologies including RADIUS, TACACS+, LDAP, TLS, EAP-TLS, and mTLS.
• Support identity services leveraging Azure Entra ID, Secrets Management, and certificate-based authentication.
• Conduct security assessments, audits, and risk analyses to identify vulnerabilities and drive remediation efforts.

Automation & Agentic AI

• Automate manual IAM and access management workflows to improve efficiency and reduce operational risk.
• Build and integrate Agentic AI solutions to automate authentication and authorization processes, improve decision-making, and enhance observability and auditability.
• Development & Integration
• Develop scalable full-stack applications and security automation solutions using Python, Perl, Node.js, and React.
• Design and implement integrations using REST APIs, message queues, and enterprise identity platforms.

SDLC & Operations

• Participate in all phases of the software development lifecycle, including requirements gathering, architecture, design, testing, deployment, and production support.
• Investigate and respond to security incidents, perform root cause analysis, and implement corrective actions.
• Document technical solutions, processes, and recommendations for leadership and stakeholders.

Leadership

• Provide technical guidance to project teams and junior engineers.
• Collaborate across engineering, infrastructure, and cybersecurity organizations to deliver secure, scalable solutions.
• Maintain awareness of emerging threats, technologies, and industry best practices.

What You’ll Need:

• Bachelor's degree in Computer Science, Cybersecurity, Engineering, or related field.
• 5+ years of experience in cybersecurity engineering, IAM, network security, or a related discipline.
• Experience implementing AAA and IAM solutions in hybrid cloud environments.
• Strong knowledge of RADIUS, TACACS+, LDAP, TLS, EAP-TLS, mTLS, Azure Entra ID, and secrets management.
• Experience supporting Linux/Unix systems and network infrastructure.
• Proficiency with Python, Node.js, REST APIs, and automation frameworks.
• Strong analytical, problem-solving, and communication skills.

Preferred Qualifications

• Experience with cloud security, Zero Trust architectures, and DevSecOps practices.
• Experience developing or integrating AI/Agentic AI solutions.
• Experience with React-based application development.
• Industry certifications such as CISSP, Security+, GIAC, or Azure Security Engineer.

Disclaimer: This information has been designed to indicate the general nature and level of work performed by employees in this role. It is not designed to contain or be interpreted as a comprehensive inventory of all duties, responsibilities and qualifications.

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.

Skills:

Authentication; Requirements Analysis; RADIUS AAA; Identity Access Management (IAM); Python (Programming Language); TACACS

Salary:

New Jersey Pay Range: $104,958.81 - $157,438.22

Comcast intends to offer the selected candidate base pay within this range, dependent on job-related, non-discriminatory factors such as experience. The application window is 30 days from the date job is posted, unless the number of applicants requires it to close sooner or later.

Base pay is one part of the Total Rewards that Comcast provides to compensate and recognize employees for their work. Most sales positions are eligible for a Commission under the terms of an applicable plan, while most non-sales positions are eligible for a Bonus. Additionally, Comcast provides best-in-class Benefits to eligible employees. 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 compensation and benefits summary on our careers site for more details.

Education

Master's Degree

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.

Relevant Work Experience

2-5 Years