Lead System Engineer

JOB TITLE: Lead System EngineerJOB LOCATION: 2900 W. Plano Pkwy, Plano, TX 75075 [Hybrid position]DUTIES: Design, develop, test, and implement enterprise-grade applications by building and enhancing software components to meet business goals, operational needs, and industry standards for quality, scalability, reliability and performance. Direct technical design and hands-on development of multi-platform systems, collaborating with architects and stakeholders to translaterequirements into actionable deliverables and ensure a unified architectural vision. Write robust, maintainable, and reusable code in Java/J2EE and microservices architectures, utilizing best practices such as TDD, unit testing, and frameworks like JUnit, Mockito and Spock. Conduct thorough code reviews, mentor engineers, and foster a culture of technical excellence. Collaborate with DevOps and production support to resolve issues, optimize deployments, and maintain seamless operations using CI/CD tools like GitHub, Jenkins, and Bamboo, and containerization with Docker and Kubernetes. Lead security reviews and vulnerability assessments of APIs, addressing injection, cross-site scripting, and data exposure. Analyze and transform legacy systems (EJBs) into modern, JSON-based RESTful microservices, and drive adoption of event-driven systems using Kafka. Ensure robust data persistence in Cassandra, PostgreSQL and cloud-native. Oversee API performance monitoring and dashboard creation with ELK, Dynatrace. Partner with teams on modernization strategies, technical debt reduction for AT&T's business growth.REQUIREMENTS: Requires a Bachelor's degree, or foreign equivalent degree, in Computer Science, Computer Engineering, or Engineering and five (5) years of progressive, post-baccalaureate experience in the job offered, or five (5) years of progressive, post-baccalaureate experience in a related occupation developing methodologies through the application of various programming languages; estimating story points using Reference Story in Scrum and Fibonacci sequences; utilizing API monitoring and dashboards using ELK, Dynatrace, MuleSoft, and Swagger; utilizing Java, RESTful APIs, Spring, Spring MVC, Spring Kafka, Microservices, Git, Junit, Mockito/ JMock, Selenium, and Cucumber; using relational database tools and skills including SQL, Oracle, MS SQL, PostgreSQL, and data manipulation, migration, and scrubs; utilizing JSON, XML, SoapUI, Postman, Azure cloud, NoSQL DB, and Cosmos; utilizing jQuery,ReactJS, JSON, and JavaScript; and following Agile, Scrum, and Kanban development methodologies and software tools including iTrack and ADO to deliver key business initiatives.Our Lead System Engineers earn between $171,188 - $237,400 yearly. Not to mention all the other amazing rewards that working at AT&T offers.Joining our team comes with amazing perks and benefits:Medical/Dental/Vision coverage401(k) planTuition reimbursement programPaid Time Off and Holidays (based on date of hire, at least 23 days of vacation each year and 9 company-designated holidays)Paid Parental LeavePaid Caregiver LeaveAdditional sick leave beyond what state and local law require may be available but is unprotectedAdoption ReimbursementDisability Benefits (short term and long term)Life and Accidental Death InsuranceSupplemental benefit programs: critical illness/accident hospital indemnity/group legalEmployee Assistance Programs (EAP)Extensive employee wellness programsEmployee discounts up to 50% off on eligible AT&T mobility plans and accessories, AT&T internet (and fiber where available) and AT&T phoneWeekly Hours:40Time Type:RegularLocation:Plano, TexasIt 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.Job ID R-108269 Date posted 05/07/2026Apply now Save role