Principal System Engineeringi

AT&T • Dallas, TX

5d • Onsite

About The Position

The Principal System Engineer will be responsible for architecting, designing, and analyzing large-scale distributed systems. This role involves defining end-to-end system architecture across software components, ensuring alignment with enterprise standards for performance, scalability, reliability, security, and usability. The engineer will determine and implement integrated architecture solutions by evaluating and selecting appropriate technologies such as cloud platforms, microservices, event-driven systems, APIs, and data platforms to meet evolving business and technical requirements. This position leads architectural design decisions and serves as the primary point of contact for complex technical solutions, ensuring consistency, scalability, and alignment across multiple engineering teams and systems. Responsibilities include coordinating system design and integration efforts across multiple applications (frontend, backend, APIs, data stores, infrastructure) to deliver cohesive and scalable enterprise solutions, and designing and developing multiple system versions and prototypes to evaluate and optimize performance, scalability, and fault tolerance. The role drives the development of new technologies and modernization initiatives, including migration from legacy systems to cloud-native architectures, microservices, and API-driven platforms. Additionally, the Principal System Engineer researches, evaluates, and recommends emerging technologies and tools to improve system efficiency, developer productivity, and overall system quality. This role defines and enforces technical standards, design patterns, and best practices for application development, system integration, API design, caching, session management, and error handling. Collaboration with cross-functional teams and leadership, including architects, product managers, and engineering directors, is essential to align technical solutions with business objectives. The engineer will review and refine architectural solutions for large-scale epics and initiatives, ensuring technical feasibility and readiness prior to implementation. Developing and maintaining comprehensive technical documentation, mentoring engineers, and leading performance optimization efforts are also key aspects of this role. Participation in production support and incident management, including troubleshooting complex issues and ensuring system continuity, is required. The role involves building multiple system versions addressing performance and scale, and developing technical documentation on applications and systems.

Requirements

• Utilize modern frontend technologies including React.js, Next.js, TypeScript, Redux, MUI, Styled Components, Tailwind CSS, React Native, and Java development (Java/Kotlin).
• Utilize backend frameworks and enterprise application development using Spring Boot, Spring MVC, Spring Security, Spring Cloud, Hibernate, Struts2, and integration with REST, SOAP APIs, and GraphQL along with database systems Cassandra NoSQL, RDBMS Oracle/Postgres/MySQL.
• Use event-driven and messaging systems such as Kafka, along with networking protocols including HTTP, HTTPS, TCP, and UDP.
• Utilize DevOps, CI/CD, and code quality tools such as Jenkins, SonarQube, Veracode, Helm, Docker, and Kubernetes.
• Utilize build and version control tools such as Maven, Gradle, Ant, GitLab, Bitbucket, and GitHub.
• Use public clouds such as Google Cloud, Azure Cloud and monitoring platforms such as Splunk, and Dynatrace.
• Requires a Bachelor’s degree, or foreign equivalent degree in Applied Computer Science, Information Systems, or Computer Engineering and seven (7) years of progressive, postbaccalaureate experience in the job offered or seven (7) years of progressive, postbaccalaureate experience in a related occupation building multiple versions systems addressing performance and scale; and developing technical documentation on applications and systems.

Responsibilities

• Architect, design and analyze large-scale distributed systems by defining end-to-end system architecture across software components, ensuring alignment with enterprise standards for performance, scalability, reliability, security, and usability.
• Determine and implement integrated architecture solutions by evaluating and selecting appropriate technologies (e.g. cloud platforms, micro services, event-driven systems, APIs and data platforms) to meet evolving business and technical requirements.
• Lead architectural design decisions and serve as primary point of contact for complex technical solutions, ensuring consistency, scalability and alignment across multiple engineering teams and systems.
• Coordinate system design and integration efforts across multiple applications including frontend, backend, APIs, data stores and infrastructure to deliver cohesive and scalable enterprise solutions.
• Design and develop multiple system versions and prototypes to evaluate and optimize performance scalability and fault tolerance under varying workloads and production scenarios.
• Drive development of new technologies and modernize initiatives including migration from legacy systems to cloud-native architectures, micro services and API driven platforms.
• Research, evaluate and recommend emerging technologies and tools (e.g. AI/ML, cloud services, GraphQL, caching strategies) to improve system efficiency, developer productivity and overall system quality.
• Define and enforce technical standards, design patterns and best practices for application development, system integration, API design, caching, session management and error handling across engineering teams.
• Collaborate with cross functional teams and leadership (including architects, product managers and engineering directors) to align technical solutions with business objectives and strategic initiation.
• Review and refine architectural solutions for large scale epics and initiatives ensuring technical feasibility, readiness and alignment prior to implementation.
• Develop and maintain comprehensive technical documentation including architectural diagrams, design documents, API specifications and operation guidelines.
• Mentor and provide technical leadership to engineers and development teams including conducting design reviews, code reviews and knowledge sharing sessions to improve engineering quality and productivity.
• Identify and implement process improvements in software development lifecycle including CI/CD pipelines, release processes, testing strategies and automation of engineering workflows.
• Lead performance optimization efforts including tuning application performance, improving response times and optimizing resource utilization across distributed systems.
• Participate in production support and incident management including troubleshooting complex issues, implementing hot fixes and ensuring system continuity and high availability.
• Build multiple versions systems addressing performance and scale.
• Develop technical documentation on applications and systems.

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

What This Job Offers

• Job Type: Full-time
• Career Level: Principal