Principal System Engineer

AT&T

Principal System Engineer at AT&T focusing on Application and Network Security. Designs technical solutions and oversees security compliance while leading development teams in Texas.

Posted 5/21/2026full-timeRichardson • Texas • 🇺🇸 United StatesLead💰 $174,100 - $261,100 per yearWebsite

Tech Stack

Tools & technologies

Cloud

About the role

Key responsibilities & impact

Design applications, platforms or services by translating core business requirements into comprehensive technical solutions
Ensure functional, performance, and reliability through hands-on system design, technical enablement, and strategic decision-making across platform, network, software, and cloud environments
Design and create scalable, high-performance, and reliable system architectures and platforms
Translate business needs into technical specifications and ensure seamless integration of system components
Provide guidance to development teams, align technical solutions with business objectives, and collaborate with stakeholders
Conduct performance and reliability analysis, and resolve system issues and bottlenecks
Maintain detailed system documentation, ensure security and compliance, and stay updated with industry trends for ongoing improvement
Operate and oversee security controls, continuously monitoring for threats and reducing risk through proactive assessments
Define and evolve secure architectures across applications, systems, and networks, continuously strengthening defenses against emerging threats
Enforce security policies, ensure regulatory compliance, and provide leadership with clear visibility into the organization’s security posture
Proactively identify security risks and lead incident response efforts to minimize operational, financial, and reputational impact
Collaborate with IT, Legal, vendors, and business teams to embed security into solutions, provide expert guidance, and promote security best practices across the organization

Requirements

What you’ll need

Bachelor’s degree (BS/BA) in Computer Science desired
7+ years of related experience
Certification is required in some areas
At least one industry cert highly recommended: CISSP, CEH, CCIE Security, CompTIA Security+, and ISC2

Benefits

Comp & perks

Medical/Dental/Vision coverage
401(k) plan
Tuition reimbursement program
Paid Time Off and Holidays (at least 23 days of vacation each year and 9 company-designated holidays)
Paid Parental Leave
Paid Caregiver Leave
Additional sick leave beyond what state and local law require
Adoption Reimbursement
Disability Benefits (short term and long term)
Life and Accidental Death Insurance
Supplemental benefit programs: critical illness/accident hospital indemnity/group legal
Employee Assistance Programs (EAP)
Extensive employee wellness programs
Employee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet and fiber where available, and AT&T phone

ATS Keywords

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Applicant Tracking System Keywords

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Hard Skills & Tools

system designtechnical enablementscalable architectureperformance analysisreliability analysissystem documentationsecurity controlsincident responseintegration of system componentscloud environments

Soft Skills

collaborationguidancestrategic decision-makingstakeholder engagementleadershipcommunicationproactive assessmentproblem-solvingrisk identificationvisibility into security posture

Certifications

CISSPCEHCCIE SecurityCompTIA Security+ISC2