Sr Specialist System Engineering

Job Description :Responsibilities  Develop technical expertise with 3GPP 5G SA SMF/UPF and LTE/NSA SGW/PGW and actively drive our 24x7 lab certification objective. Participate in Sprint Planning and design discussions with the development team to ensure that automation objectives are met. Effectively utilize project management tools such as Jira to track requirements, design, and deliveries of the project. Develop expertise in the Automated Network Testing (ANT) platform and become an advocate for its use in both a lab and production environment. Improve productivity for the overall team by proposing tools or processes that optimize our quality and rate of delivery. Understand the business objectives of our team, organization, business unit, and company. Create End-to-End (E2) test cases and post-validation templates using ANT. Create Command-Line-Interface (CLI) test case template health checks using ANT and regular expressions. Collaborate with platform teams, testers and infrastructure teams to troubleshoot automation, tooling and mobility infrastructure networks. Participate in script lifecycle management including development, delivery, deployment, updates, defect management. Basic Qualifications Expert level working experience with 3GPP Mobile Packet Core architecture, interfaces and call flows. Specific focus on LTE/NSA SGW/PGW and 5G SA SMF/UPF. Hand on experience on TCP/IP, UDP/QUIC protocols, SSL/TLS Encryptions etc. Good understanding of Linux, Firewall (NAT/PAT etc.), networking and routing protocols (e.g. Ethernet, VLAN, BGP etc.). Expert level working experience troubleshooting mobility infrastructure and services. Expert level working experience in creation and maintenance of Azure and Azure DevOps (ADO) concepts including specific experience with:Demonstrated ability to develop ADO Pipelines from the ground up (particularly yaml expressed pipelines).Demonstrated use of az cli commands within ADO Pipelines as a method to interact with Azure Resources.Comprehension of the purpose and limitations of ADO agents.ADO Repos and expanding understanding not only to the purpose but more specifically on branching and tagging methods to optimize code stored in repositories to handle the different environments. Understanding the capabilities of Azure Keyvault (AKV). Use of Azure Container Registry (ACR) to maintain images and charts through tools used within the pipelines to import, tag, and extract artifacts. Understanding of Azure Resource Manager (Endpoints and Service Principals). Understanding of Bicep and ARM Templates to build Azure Resources with particular emphasis on parameterization. Demonstrated use of Azure Operator Service Manager (AOSM). Ability to articulate concepts, solutions, and standards to members of the project with various levels of skills sets through presentations and/or discussions. Proficient in Python development. 3+ Years of experience working with Regular Expressions (RegEx). 3+ Experience in K8s, Azure, Azure Dev Ops, CI/CD. Hands on experience developing and maintaining automation scripts following Object Oriented Programming principles. Excellent communication, collaboration, reporting, analytical and problem-solving skills. Proficient with Agile testing methodologies and best practices. Working knowledge of Robot framework, Selenium, Java script, JSON, YAML files etc.  Portfolio on GitHub or other platforms. Interest in learning new tools and technologies. Excellent communication skills (written and oral) and intercultural communication abilities. Must have a win as one attitude, to work as a team to carry out projects on time with quality. Weekly Hours: 40Time Type: RegularLocation: Bangalore, Karnataka, IndiaIt 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.