This Principal System Engineer is a senior technical role responsible for architecting, designing, and delivering AI‑driven, data‑intensive, and cloud‑native platforms supporting AT&T’s Consumer Technology eXperience (CTX) digital and compliance ecosystems.
This role requires deep, hands‑on experience in Artificial Intelligence, Generative AI, Agentic AI, Machine Learning, Deep Learning and Data Engineering, combined with enterprise‑level system design, modernization, and cross‑functional collaboration.
AI / GenAI / Agentic AI Engineering
Design, build, and operate production‑grade AI, GenAI, and Agentic AI solutions at enterprise scale.
Develop Agentic AI applications using Python‑based frameworks (e.g., ADK) or equivalent orchestration platforms.
Implement LLM‑based workflows including prompt orchestration, RAG, and autonomous agent patterns.
Work on with Data Science and ML teams to operationalize AI solutions with security, auditability, and observability.
Embed responsible AI practices including privacy, logging, monitoring, and governance controls.
Data Engineering & Intelligent Platforms
Architect and implement end‑to‑end ETL/ELT pipelines (ingestion, cleansing, transformation, enrichment).
Build real‑time and batch data pipelines using Kafka and event‑driven architectures.
Engineer data platforms using Python, PySpark, and Databricks on Azure (preferred)
Apply expertise in data modeling, data architecture, data mining, and data warehousing.
Process structured, semi‑structured, and unstructured data at scale.
System Architecture
Define and enforce engineering standards, architectural patterns, and best practices.
Drive legacy modernization including monolith‑to‑microservices and cloud migrations.
Design microservices‑based architectures to expose AI and data capabilities.
Full‑Stack & API Engineering
Develop scalable solutions using: Backend: Node.js (TypeScript preferred), Laravel (PHP) Frontend: Vue.js or equivalent modern UI frameworks.
Design secure, well‑governed APIs (REST, GraphQL) with authentication, auditing, and logging.
Ensure code quality, testability, and maintainability.
Accessibility, Security & Compliance
Integrate accessibility‑by‑design aligned to WCAG standards.
Embed accessibility, security, privacy, and SOX controls into application and AI workflows.
Integrate automated and manual accessibility testing into CI/CD pipelines.

Requirements

Bachelor’s degree in computer science, Engineering, or equivalent experience.
10+ years of hands‑on experience in Software Engineering, Data Engineering, or System Engineering.
8+ years of strong, demonstrated expertise in PHP / Laravel development, including production‑grade applications.
8+ years of hands‑on experience designing, developing, and maintaining desktop, mobile, and responsive web applications using Laravel, Node.js, and Vue.js, deployed in Azure container‑based environments.
8+ years of strong, demonstrated expertise in Node.js, including API and microservices development.
8+ years of Vue.js front‑end development experience, including responsive frameworks, CSS, JavaScript, and modern UI patterns.
8+ years of experience designing and implementing database solutions, with expert‑level PostgreSQL (PGSQL) coding, performance tuning, and industry‑standard normalization practices.
Hands‑on experience building AI/ML, Generative AI, or Agentic AI solutions in production environments.
Strong hands‑on expertise in: Python and PySpark
Building ETL/ELT pipelines end‑to‑end
Distributed and cloud‑native architectures.
Experience with: Event‑driven and streaming architectures (Kafka)
Microservices and API‑based platforms
Secure coding and compliance‑driven development.
Experience with OAuth providers, cloud logging, auditing, and monitoring tools.

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.

Applicant Tracking System Keywords

Tip: use these terms in your resume and cover letter to boost ATS matches.

Hard Skills & Tools

Artificial IntelligenceGenerative AIAgentic AIMachine LearningDeep LearningData EngineeringPythonPySparkNode.jsLaravel

Soft Skills

cross-functional collaborationsystem designengineering standardscode qualitytestabilitymaintainability

Certifications

Bachelor’s degree in computer scienceBachelor’s degree in Engineering