Sr Specialist System Engineering - Mobile Packet Core Certification Automation Engineer

AT&T; Bengaluru; On-site; INR 1,200,000 - 1,800,000; Full time

Job summary

AT&T is seeking a highly skilled automation engineer in Bengaluru to advance 3GPP 5G SA Core testing and automation initiatives. You will own end-to-end test case creation using the ANT framework and contribute to lab certifications while coordinating with platform, QA, and infrastructure teams.

The role requires strong Python, RegEx, and Azure DevOps experience, plus expertise in TCP/IP, Linux networking, and Agile practices. Daily collaboration with US stakeholders is expected.

Qualifications

• Bachelor's degree in a technical field.
• Expert-level experience with 3GPP Mobile Packet Core architecture, 5G SA NF call flows.
• Hands-on TCP/IP, HTTP2, UDP/QUIC, SSL/TLS encryption.
• Strong Linux, firewall concepts (NAT/PAT), and networking (Ethernet, VLAN, BGP).
• Expert-level troubleshooting mobility infrastructure in telecom environments.
• Proficiency with Azure and Azure DevOps (ADO), including YAML pipelines and Azure CLI.
• Experience with ARM templates, Bicep, and ARM endpoints/service principals.
• Experience with developing and maintaining automation scripts using OOP principles.

Responsibilities

• Develop expertise in 3GPP 5G SA Core and drive 24x7 lab certification.
• Participate in sprint planning and design discussions to meet automation goals.
• Utilize Jira to track requirements, design, and deliveries of the project.
• Develop expertise in the ANT platform for lab and production use.
• Improve team productivity by proposing tools/processes for better quality and delivery rate.
• Create E2E test cases and post-validation templates using ANT.
• Create CLI test case template health checks using ANT and regex.
• Collaborate with platform, testers and infra teams to troubleshoot automation and mobility networks.

Skills

Python development

Regular Expressions

Analytical skills

Communication skills

Agile methodologies

Education

Bachelor's degree in Computer Science, Engineering, Telecommunications, or related field

Tools

Azure

Azure DevOps

Azure CLI

ARM templates

Bicep

AOSM

GitHub

CI/CD pipelines

Robot Framework

Selenium

JSON

YAML

Job description

Job Responsibilities

• Develop technical expertise with 3GPP 5G SA Core 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.

Job Qualifications / Required Qualifications

• Bachelor's degree in Computer Science, Engineering, Telecommunications, or a related technical field.
• Expert-level experience with 3GPP Mobile Packet Core architecture, interfaces, and call flows, with specific focus on 5G SA NFs and call flow
• Hands-on experience with TCP/IP, HTTP2, UDP/QUIC, SSL/TLS encryption, and related transport/networking fundamentals.
• Strong understanding of Linux, firewall concepts (including NAT/PAT), and networking/routing technologies such as Ethernet, VLAN, and BGP.
• Expert-level experience troubleshooting mobility infrastructure and services in telecom environments.
• Strong hands-on experience with Azure and Azure DevOps (ADO), including:
• building ADO pipelines from the ground up, especially YAML-based pipelines
• using Azure CLI (az cli) commands within ADO pipelines to interact with Azure resources
• understanding the role and limitations of ADO agents
• working with ADO Repos, including branching and tagging strategies across environments
• Understanding of Azure Key Vault, Azure Resource Manager (ARM), including endpoints and service principals.
• Experience with Bicep and ARM templates for Azure resource deployment, with emphasis on parameterized infrastructure definitions.
• Experience with Azure Operator Service Manager (AOSM).
• Proficiency in Python development.
• 3+ years of experience with Regular Expressions (RegEx).
• 3+ years of experience with Kubernetes, Azure, Azure DevOps, and CI/CD.
• Hands-on experience developing and maintaining automation scripts using object-oriented programming principles.
• Strong analytical, troubleshooting, and problem-solving skills.
• Excellent written and verbal communication, collaboration, and reporting skills.
• Ability to clearly articulate concepts, solutions, and standards to team members with varying levels of technical expertise.
• Experience working in Agile environments, including testing methodologies and best practices.
• Strong team-oriented mindset with the ability to collaborate effectively and deliver quality results on time.

Preferred Qualifications

• Experience with Robot Framework, Selenium, JavaScript, JSON, and YAML.
• Working knowledge of telecom automation and cloud-native operational tooling.
• Experience maintaining code or project artifacts in GitHub or similar source control platforms; public portfolio is a plus.
• Exposure to test automation frameworks and CI/CD-integrated validation practices.
• Strong interest in learning and adopting new tools and technologies.
• Demonstrated intercultural communication skills and ability to work effectively across global teams.
• Experience working in fast-paced, cross-functional engineering environments supporting large-scale telecom systems.
• Agentic AI software development and triage.
• Telemetry for Fault/Performance Monitoring and tracing.

Additional Job Information

This is an offshore role that requires daily collaboration with U.S. stakeholders, including overlapping work hours to ensure effective partnership and meet business needs.

Weekly Hours

40

Time Type

Regular

Location

IND:KA:Bangalore / Intl Tech Park, Navigator Bldg, Whitefield Road: Intl Tech Park, Navigator Bldg:Intl Tech Park, Navigator Bldg

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