Principal Software Engineer (Full-Stack)

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 2026, the digital transformation will revolutionize the digital space, and you can build a career that will propel your future.

Requires experience with Artificial Intelligence (AI). Agentic AI and AI-ACP is desirable. Looking for both front end and back end development experience in the following technologies: React, Node, Next, GraphQL, Java, and Public Cloud Platforms (Azure, GCP, or AWS).

We are looking for a Principal Full Stack Engineer who has hands-on experience with both front-end (UI) and back-end technologies.

Responsibilities and Day-to-Day View:

• Contribute to the development of both Frontend (UI) and Backend (BFF) layers.
• Build Frontend with React JS and Backend BFF (Backend for Frontend) layer with either Java & Javascript / REST / Graph QL / Node JS / MuleSoft.
• Create and support the development of responsive/adaptive web applications.
• Work closely with the UX/UI Designers to create high-quality, innovative, and intuitive user experiences in our products.
• Employ engineering techniques to build high-performance pages, user and browser-friendly UI / Web solutions.
• Effectively use Git Hub Co-pilot across SDLC for pair programming, unit test cases, automation test cases, and to write user stories in agile processes to increase developer productivity.
• Partner with Enterprise, Application Architecture teams and contribute to the detailed design and architecture to enable secure, scalable, and maintainable software.
• Focus on scalability, security, and availability of all applications and processes.
• Design, code, test, debug, and document new and existing components to ensure that software meets business, quality, and operational needs.
• Build high-quality code following unit testing and test-driven and security-driven development.
• Implement all critical NFRs defined at the solution level.
• Constantly improve website performance with the help of application monitoring tools such as Dynatrace, Quantum Metrics, Splunk, etc.
• Work with the team to troubleshoot code-level problems quickly and efficiently.
• Apply deep technical expertise to resolve challenging programming and design problems.

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 sophisticated applications and APIs in Cloud and hybrid cloud environments at large scale.
• Preferably Next.js on the UI with Node.js on the backend, or React.js on the UI with Java on the backend.
• Experience building applications using Generative AI, LLMs & Copilots.
• 7+ years of experience developing applications utilizing relational databases and/or no SQL databases as part of the overall application architecture.
• 7+ years of experience in implementing caching techniques for a web application.
• Ability to work successfully with multi-functional teams, principals, and architects. Coordinates optimally across organizational boundaries and geographies.
• 7+ years of experience with front-end frameworks like React.js.
• 7+ years of strong background in object-oriented design principles and design patterns.
• Expert knowledge and experience working with asynchronous message processing, stream processing, and event-driven computing.
• Comfortable working in a fast-paced, highly collaborative environment.

Technical Skills:

• React.js, Node.js, Next JS, Micro Front-End architecture, Typescript, Graph QL, Bootstrap.js, HTML5, XML, CSS3, Java, JavaScript, REST services, NoSql technologies (Cassandra/Mongo DB), Spring boot, Kafka/MQ, Redis, Splunk, Azure / AWS, Prometheus/Grafana, Git, Jira, Jenkins, Docker, Kubernetes.

Note- 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.

Our Principal System Engineering, earns between?$158,200-$237,400 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-

\#ConsumerTechnologyeXperience

Ready to join our team? Apply today

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.

Weekly Hours:

40

Time Type:

Regular

Location:

USA:TX:Plano / W Plano Pkwy - Adm:3400 W Plano Pkwy

Salary Range:

$158,200.00 - $237,400.00

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.

AT&T will consider for employment qualified applicants in a manner consistent with the requirements of federal, state and local laws

We expect employees to be honest, trustworthy, and operate with integrity. Discrimination and all unlawful harassment (including sexual harassment) in employment is not tolerated. We encourage success based on our individual merits and abilities without regard to race, color, religion, national origin, gender, sexual orientation, gender identity, age, disability, marital status, citizenship status, military status, protected veteran status or employment status