Principal Cybersecurity – Network Security Engineer at AT&T (Dallas, Texas)
Location: Dallas, Texas
Job Type: Full-Time, Onsite (5 Days a Week)
Job ID: Not Disclosed
Salary Range: $141,300.00 – $237,400.00 USD Annually
Weekly Hours: 40 Hours
Posted by: AT&T | Chief Security Office
🔍 Description
Join AT&T as a Principal Cybersecurity – Network Security Engineer in Dallas, Texas. Use your firewall, network engineering, and cybersecurity expertise to protect next-gen communication systems. Salary up to $237K with full benefits. Apply now.
✨ Reimagine Security with AT&T’s Chief Security Office
AT&T, one of the world’s leading telecom and technology companies, is inviting top-tier professionals to join its Chief Security Office (CSO) in a high-impact role. As a Principal Cybersecurity – Network Security Engineer, you will be at the forefront of designing and defending mission-critical network infrastructures that connect the world.
This position is ideal for highly skilled engineers who thrive in fast-paced environments, enjoy solving complex technical issues, and have a passion for cybersecurity.
🚀 Why AT&T?
AT&T is pioneering the future of global communications. With digital transformation at the heart of its vision, AT&T offers more than a career—it offers a chance to be part of history. By joining this team, you will:
- Collaborate with world-class experts and thought leaders
- Gain access to cutting-edge technology and research
- Drive innovations that impact millions worldwide
- Earn a competitive salary and enjoy a rich benefits package
“Don’t just imagine the future—create it with AT&T.”
🎓 Position Summary
As a Principal Cybersecurity – Network Security Engineer, you will:
- Act as a subject matter expert (SME) for multiple high-impact security environments
- Lead network security projects and firewall implementations
- Troubleshoot complex TCP/IP issues and perform deep-dive forensic analysis
- Train and mentor operations teams while serving as a tier-4 escalation resource
- Engage with cross-functional teams, external vendors, and stakeholders to ensure seamless cybersecurity protocols
🧬 Key Responsibilities
📊 Strategic Initiatives
- Oversee mission-critical projects and migrations with a strong security-first mindset
- Drive operational excellence and innovation in security system design
- Lead the development and refinement of best practices for perimeter security technologies
⚖️ Technical Operations
- Serve as the final escalation point (Tier 4) for complex network and security incidents
- Design, configure, and manage firewalls using Juniper, Palo Alto, or Fortinet
- Implement next-gen firewall policies, reporting mechanisms, and system upgrades
- Ensure secure infrastructure through performance testing, version control, and disaster recovery planning
🔧 Platform & Systems Management
- Manage Linux-based systems, virtual machines, and containers
- Apply advanced knowledge of the OSI model, TCP/IP protocols, and cybersecurity frameworks
- Monitor and analyze system logs, event data, and audit trails for threats
✍️ Mentorship & Knowledge Transfer
- Guide operational teams through best practices, security policies, and auditing requirements
- Provide specialized training sessions and documentation for junior engineers
- Coordinate with leadership to align cybersecurity goals with business needs
💼 Qualifications
🎓 Educational Background
- Preferred: Bachelor’s degree in Information Systems, Cybersecurity, Engineering, or Mathematics
- Equivalency: Proven experience in lieu of a degree will be considered
⏳ Experience Requirements
- 8 to 10 years of advanced hands-on experience in network security and firewall management
- Expertise in firewall design, configuration, performance optimization, and troubleshooting
- In-depth experience with network protocols, cloud services, content management, data centers, and virtualization technologies
🤝 What You Bring to the Table
| Required Skills | Description |
| Firewall Expertise | Extensive experience with Palo Alto, Fortinet, and Juniper systems |
| TCP/IP Networking | Deep knowledge of network configurations and OSI model |
| Linux Systems | Skilled in containerization and Linux server management |
| Project Management | Strong ability to manage large-scale projects end-to-end |
| Cross-Functional Communication | Ability to work across departments and with external partners |
| Problem Solving | Capable of handling high-level escalations and security incidents |
💰 Compensation and Perks
📈 Salary Range
- $141,300.00 – $237,400.00 (based on experience, expertise, and location)
🏦 Location Requirement
- 100% Onsite Role: Daily presence required at Dallas, Texas office
- No relocation assistance provided
🎁 Benefits Package
| Category | Benefits |
| Health | Medical, Dental, Vision |
| Retirement | 401(k) Plan |
| Leave | Paid Parental & Caregiver Leave, Sick Leave, PTO (23+ days) |
| Insurance | Life, AD&D, Disability (STD & LTD) |
| Family | Adoption Reimbursement |
| Wellness | Employee Assistance Program (EAP), Wellness Programs |
| Learning | Tuition Reimbursement, Training & Development Programs |
| Discounts | Up to 50% Off on AT&T Mobility, Internet, Accessories |
🕊️ Diversity & Inclusion
At AT&T, we live by the motto: “Everyone Included.” We believe our strength lies in our diversity. We’re committed to providing equal opportunities to all individuals regardless of race, gender, age, orientation, or background. We’re proud to be a Fair Chance Employer and do not conduct background checks until after an offer has been made.
“Diverse minds build the most secure networks.”
🌟 Career Advancement at AT&T
Working at AT&T isn’t just a job—it’s an opportunity to evolve and innovate:
- Join elite transformation teams
- Collaborate with forward-thinking experts
- Access ongoing certifications in cloud and security
- Be a part of a company that leads the next-generation communication revolution
Explore more: AT&T Careers – Digital Transformation Team
☑️ Apply Today: Step into the Future of Cybersecurity
✉ How to Apply:
Visit the official job page at jobs.att.jobs or Apply Now
Note: This role requires you to be physically present in Dallas, TX, for 5 days a week.
