Senior Cybersecurity - SIEM

This position requires office presence of a minimum of 5 days per week and is only located in the location(s) posted. No relocation is offered. Join AT&T and reimagine the communications and technologies that connect the world. Our Chief Security Office ensures that our assets are safeguarded through truthful transparency, enforce accountability and master cybersecurity to stay ahead of threats. Bring your bold ideas and fearless risk-taking to redefine connectivity and transform how the world shares stories and experiences that matter. When you step into a career with AT&T, you won’t just imagine the future-you’ll create it. The Senior Cybersecurity position requires solid technical knowledge in cyber operations, SIEM work experience, detection engineering, algorithm development and a strong interest in growing expertise. Works independently on assigned tasks and collaborates closely with Leads and analysts to review and document feeds, research threat scenarios, and develop scripts, dashboards, and reports to detect and analyze threats against the Enterprise. This role supports SaaS, Network Infrastructure Security, on-prem and cloud-based security. Key Responsibilities: Review Front Door and Jira documentation submitted to and created by team Lead the advancement of AI‑driven threat detection by defining, developing, and operationalizing algorithms that scale across enterprise telemetry, meet detection quality standards, and integrate with Cyber Operations workflows Analyze data feeds and provide feedback to the data ingest team regarding feed readiness. Document and capture feed information as part of feed onboarding process Working with analysts (and other SMEs) as well as Focus Area Leads based on Work Plan, research threat scenarios determine data sets required, develop algorithms for threat detection Testing and onboarding alarms via team’s processes. This includes micro-playbook development and other SOAR related activities Grow knowledge of Cybersecurity. Team processes, and Systems Required/Desired Qualifications: Experience in Data Analysis, applied Machine Learning, AI, and Detection Engineering. Proficiency in Python, SQL, Splunk, and Kusto (or similar query languages). Ability to learn new technologies and concepts quickly; self-motivated and resourceful. Programming skills in Python, and Java. Knowledge of database systems; experience with CRIBL, Palo Alto XSIAM desired. Splunk, Apache Spark/Databricks. Strong communication and documentation skills. Background in Computer Science, Data Science, or Engineering with cybersecurity familiarity. 3+ years professional experience. Familiarity with applying Artificial Intelligence (AI) or Machine Learning (ML) techniques in cybersecurity contexts (e.g., anomaly detection, threat hunting, behavioral analytics, or risk scoring). Supervisor: No Our Senior Cybersecurity earns between $116,700-$175,100 USD Annual, not to mention all the other amazing rewards that working at AT&T offers. Individual starting salary within this range may depend on geography, experience, expertise, and education/training. Joining our team comes with amazing perks and benefits: Medical/Dental/Vision coverage 401(k) plan Tuition reimbursement program Paid Time Off and Holidays (based on date of hire, 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 may be available but is unprotected 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. #LI-Onsite – Full-time office role- Ready to join our team? Apply today. Weekly Hours: 40 Time Type: Regular Location: Alpharetta, Georgia, Atlanta, Georgia, Bedminster, New Jersey, Bothell, Washington, Charlotte, North Carolina, Dallas, Texas, Middletown, New Jersey Salary Range: $128,400.00 - $215,800.00 It is the policy of AT&T to provide equal employment opportunity (EEO) to all persons regardless of age, color, national origin, citizenship status, physical or mental disability, race, religion, creed, gender, sex, sexual orientation, gender identity and/or expression, genetic information, marital status, status with regard to public assistance, veteran status, or any other characteristic protected by federal, state or local law. In addition, AT&T will provide reasonable accommodations for qualified individuals with disabilities. AT&T is a fair chance employer and does not initiate a background check until an offer is made. We are pioneers of making connections and have been ever since Alexander Graham Bell invented the telephone and founded our company. That was nearly 150 years ago, and we haven’t stopped innovating since. At our core, we help bring families, communities, and businesses together with the products and services they need to thrive every day. From the widespread and growing availability of 5G and Fiber to working on things we once only dreamed of—at AT&T, we create connections that change the world.