Sr Specialist System Engineering (3GPP Mobile Packet Core, Specific focus on LTE/NSA SGW/PGW and 5G SA SMF/UPF)
Sr Specialist System Engineering (3GPP Mobile Packet Core, Specific focus on LTE/NSA SGW/PGW and 5G SA SMF/UPF)
Posted on :
08-07-2025
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1 Vacancy
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Job Description
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.
Required Experience:
Senior IC
Employment Type
Full-Time
Key Skills
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