Principal System Engineer; Full-Stack

Position: Principal System Engineer (Full-Stack)
*
* Job Description:

**** Join AT&T and reimagine the communications and technologies that connect the world.
** Our Consumer Technology experience team is delivering innovative and reliable technology solutions to power differentiated, simplified customer experiences. 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.
** Role Overview:
** As part of our team, you’ll transform the way we deliver a seamless customer experience with digital at the center of all you do. In our world, digital is much larger than just an eCommerce channel; we are transforming all channels to digitally perform as one team to create a better customer experience. In 2025, the digital transformation will revolutionize the digital space, and you can build a career that will propel your future.

We are looking for a
** Principal System Engineer** (
** Full Stack)
** who has hands-on experience with both front-end (UI) and back-end technologies.
** Responsibilities and Day-to-Day View:
*** Act as a Principal Systems Engineer, leveraging deep expertise and hands-on involvement to lead solution development from initial concept to final delivery, with ownership of outcomes.
* Proactively design, build, and optimize robust, scalable micro-frontend (MFE) web applications using React JS/Next JS for dynamic Frontend experiences, and Graph

QL, Java, API and NodeJS for modern Backend for Frontend (BFF) layers.
* Demonstrate a self-driven approach by consistently seeking innovative solutions, setting high standards for quality, and championing continuous improvement.
* Collaborate closely with UX/UI Designers to deliver user experiences that exceed expectations for quality, innovation, and usability.
* Lead by example as a technical expert and mentor, inspiring and empowering engineers across multiple teams through active knowledge sharing, innovation, and rigorous code reviews.
* Harness AI assistants throughout the SDLC - turning concepts into user stories, stories into code, and automating testing and deployment, maximizing productivity, accelerate testing and development, and streamline agile workflows.
* Partner with Application and Domain Architecture teams to ensure solutions are secure, scalable, maintainable, and positioned for long-term success.
* Relentlessly pursue performance excellence, proactively improving DORA metrics and website performance using advanced monitoring tools such as Dynatrace, Quantum Metrics, and Splunk.
* Own the detailed design and architecture process, maintaining a sharp focus on scalability, security, and availability for all applications and processes.
* Set and uphold the highest standards in design, coding, testing, debugging, and documentation, while advocating for best practices in development, quality assurance, and security.
* Ensure all solutions meet or exceed critical non-functional requirements (NFRs) and industry best practices.
* Actively partner with cross-functional teams—including Platform, Dev Ops/SRE, Enterprise Architecture, and UX/UI—to deliver innovative, high-performance web solutions.
* Exhibit a sense of urgency and ownership in troubleshooting and resolving complex code-level issues, applying deep technical expertise and a solutions-oriented mindset to every challenge.
* Continuously seek feedback, measure impact, and adapt strategies to achieve superior results for the organization and its customers.
* Guide cross-functional teams in executing multiple complex initiatives, delivering consistent results and maintaining high standards across all efforts.
** Job Contribution:
*** Bachelor's or master's degree program in Computer Science, Computer Engineering, or a related field (or equivalent experience).
* Extremely motivated, highly passionate, and curious about new technologies. Take pride in your work and strive to achieve incredible results and possess superb communication and planning skills.
* 10+ years of proven experience building high performance applications and APIs in Azure, Hybrid cloud environments at…