Experienced Principal Cybersecurity Engineer - Proxy and Web Content Filtering Specialist for a Global Communications Leader

Introduction to the Company and Role Imagine being part of a global communications leader that is redefining the way the world connects and shares stories. At AT&T, our Chief Security Office is dedicated to safeguarding our assets through transparency, accountability, and mastery of cybersecurity. We are seeking an experienced Principal Cybersecurity Engineer with extensive expertise in proxy and web content filtering to join our team. As a key member of our cybersecurity team, you will play a critical role in protecting our networks, systems, and data from cyber threats. About the Job This is a hands-on technical role that requires a deep understanding of cybersecurity principles, proxy technologies, and web content filtering. The successful candidate will have extensive experience in creating policy, tuning, and administration using technologies such as F5, Forcepoint, Broadcom, and Squid. You will be responsible for the engineering, deployment, operations, and maintenance of premise and cloud-based proxy solutions, including CASB, SWG, and ZTNA. Your expertise will be crucial in integrating proxy platforms with other security solutions and data sources, as well as performing hands-on proxy deployment, configuration, policy, and maintenance. Key Responsibilities Engineer, deploy, configure, and maintain forward proxy solutions, including CASB, SWG, and ZTNA Develop advanced alerts and reports to meet the requirements of key stakeholders Develop automation for security tools management and workflow integration Collaborate with key stakeholders within Information Security and Engineering teams to develop specific use cases to address specific business requirements Create and implement best practices for proxy rules and signatures to mitigate threats Design and implement custom alerting dashboards in SIEM for investigations Work extensively with stakeholders across AT&T to tune proxy policies Aid in gathering and presenting metrics for measuring performance and risk Provide ongoing support to existing monitoring capabilities and data collection systems Provide development support for the expansion and implementation of new systems Lead troubleshooting efforts in complex issues involving multiple platforms and network flows Required Qualifications To be successful in this role, you will need to have at least 8 years of experience in cybersecurity engineering, with extensive experience configuring, operating, and managing premise and cloud-based forward proxies. You should have a strong understanding of proxy technologies, including F5, Forcepoint, Broadcom, and Squid, as well as experience with SSE (CASB/SWG/ZTNA). A solid understanding of web applications, web platforms, application firewalls, frameworks, and protocols is also essential. Essential Skills and Competencies Strong understanding of TCP/IP, web protocols, and networking concepts Expertise with mainstream operating systems, web services, programming languages, network devices, and attack vectors Advanced expertise in reviewing and analyzing log files, data correlation, and packet captures Script writing and programming using common shell and mainstream languages Senior-level understanding of PKI Technology Working knowledge of open-source and commercial application security tools and frameworks Solid understanding of Incident Response process and prior experience in Cybersecurity operations and Incident Response Career Growth Opportunities and Learning Benefits At AT&T, we are committed to helping our employees grow and develop in their careers. As a Principal Cybersecurity Engineer, you will have access to a range of training and development opportunities, including mentorship programs, online courses, and conferences. You will also have the opportunity to work with a talented team of cybersecurity professionals and contribute to the development of innovative cybersecurity solutions. Work Environment and Company Culture Our company culture is built on a foundation of transparency, accountability, and collaboration. We believe in empowering our employees to take ownership of their work and to make a real impact on the business. As a member of our team, you will be part of a dynamic and supportive environment that values diversity, inclusion, and innovation. Compensation, Perks, and Benefits We offer a competitive salary range of $141,300 - $237,400, depending on experience and location. In addition to your salary, you will also be eligible for a range of benefits, including medical, dental, and vision coverage, a 401(k) plan, tuition reimbursement, paid time off, and holidays. We also offer a range of additional perks, including employee discounts on AT&T mobility plans and accessories, AT&T internet, and AT&T phone services. Conclusion If you are a motivated and experienced cybersecurity professional looking for a new challenge, we encourage you to apply for this exciting opportunity. As a Principal Cybersecurity Engineer at AT&T, you will have the chance to make a real impact on the business and to contribute to the development of innovative cybersecurity solutions. Don't miss out on this opportunity to join a global leader in communications and technology and to take your career to the next level. Take the Next Step Are you ready for this challenge? Apply now and let's discuss how you can become a vital part of our success story. Please submit your application, including your resume and a cover letter, to be considered for this exciting opportunity. Apply for this job