Professional Software Engineer needed by AT&T Services, Inc. in Dallas, Texas [and various unanticipated locations throughout the U.S.; may work from home] to perform all steps included in the overall delivery process of a software application or service. Design, develop, test, deploying, and maintain with a focus on automation. Gather and review software requirements and user stories and provide estimates. Create software design specifications and collaborate with engineers and architects to assess and test hardware and software interactions. Execute a specific development methodology through the application of various programming languages. Create and execute automated test plans and strategies utilizing business requirements. Validate test environments, test data, and test results. Design and implement code fixes, validate outcomes against expected results, and produce associated reporting. Perform unit testing, dynamic application security testing, interface testing, integration testing, end-to-end testing, and user acceptance testing. Support applications and solve configuration and environment issues. Support the software deployment process.