Specialist System Engineering (4G/5G Packet Core) | AT&T | Bangalore

AT&T; Bengaluru; On-site; INR 1,200,000 - 2,400,000; Full time

Job summary

AT&T in Bengaluru is seeking a Specialist System Engineering professional with 6–12 years in 4G/5G packet core end-to-end performance testing to join our engineering team on a full-time basis. You will lead testing initiatives, optimize lab infrastructure, and drive validation across Kubernetes, Linux, virtualization, and cloud-native platforms.

The role requires deep LTE/5G knowledge, experience with core network functions (SMF, UPF, UDM, UDR, NRF), and hands-on Jira usage.

Qualifications

• Bachelor’s degree in Computer Science, Telecommunications or related field.
• 6 to 12 years of telecom core network testing experience.
• Proven expertise in 4G/5G packet core end-to-end performance testing.
• Strong knowledge of LTE, 5G NSA/SA architectures and core network functions.
• Proficient with Jira for defect tracking and project management.
• Will establish on-site work in Bangalore with legal eligibility to work in India.

Responsibilities

• Lead end-to-end performance testing for 4G/5G packet core.
• Design, execute, and analyze load, stress, and performance scenarios.
• Develop and maintain test automation frameworks.
• Manage telecom lab infrastructure and virtualization environments.
• Collaborate with software, cloud, and systems teams.
• Track defects and drive project milestones with Jira.

Skills

Performance testing

Test automation

Kubernetes

Linux

Jira

Load testing

5G Core Testing

Education

Bachelor's in CS/Telecom

Masters preferred

Tools

Jira

Spirent Landslide

IxLoad

Terraform

Jenkins

GitLab CI

Job description

Position Summary:

AT&T is actively seeking an experienced, high-caliber, and technical Specialist System Engineering professional with 6 to 12 years of experience in 4G/5G Packet Core End-to-End Performance Testing to join our engineering team in Bangalore on a full-time permanent basis. In this critical leadership and testing role, you will be responsible for leading and coordinating complex performance test initiatives, load and performance testing, test automation, and validation across Kubernetes, Linux, virtualization, and cloud-native platforms. You will leverage your strong background in LTE, 5G NSA, 5G SA architectures, and core network functions (SMF, UPF, UDM, UDR, NRF) to drive network reliability. This opportunity offers competitive compensation, executive technical visibility, and exceptional career growth prospects within a leading global telecommunications and technology enterprise.

Detailed Job Description:

As a Specialist System Engineering professional supporting AT&T’s core network evolution in Bangalore, you will take full operational, tactical, and technical ownership of 4G/5G packet core end-to-end performance testing, test automation frameworks, and lab infrastructure validation. Your day-to-day responsibilities include leading or coordinating complex testing initiatives across 4G/5G packet core environments, executing rigorous load and performance testing, designing and maintaining test automation frameworks, and managing telecom lab infrastructure. You will work extensively with Kubernetes, Linux operating systems, virtualization technologies, and cloud-native platforms, while collaborating closely with software development, systems integration, and architecture teams. Furthermore, you will manage defect tracking and operational workflows using Jira, analyze call flows, and ensure peak performance across core network functions such as SMF, UPF, UDM, UDR, and NRF.

Key Responsibilities:

• Lead and coordinate complex end-to-end performance testing initiatives for 4G and 5G packet core networks.
• Design, execute, and analyze rigorous load, stress, and performance testing scenarios across high-capacity environments.
• Develop, maintain, and scale advanced test automation frameworks to accelerate validation cycles.
• Manage and optimize telecom lab infrastructure, test beds, traffic generators, and virtualization environments.
• Validate end-to-end call flows and signaling across LTE, 5G Non-Standalone (NSA), and 5G Standalone (SA) architectures.
• Test and verify core network functions including SMF, UPF, UDM, UDR, NRF, and related packet core components.
• Track defects, manage project milestones, and drive operational workflows using Jira.
• Collaborate cross-functionally with software engineering, cloud architecture, and system integration squads.

Required Qualifications & Skills:

• Bachelor’s degree in Computer Science, Telecommunications Engineering, Electronics Engineering, or a related technical discipline.
• Minimum of 6 to 12 years of professional experience in telecommunications engineering, core network testing, or system engineering.
• Proven expertise in 4G/5G Packet Core End-to-End Performance Testing, load testing, and test automation.
• Expert knowledge of LTE, 5G NSA, and 5G SA architectures, including detailed end-to-end call flows and signaling protocols.
• Hands-on familiarity with core network functions such as SMF, UPF, UDM, UDR, NRF, and related packet core components.
• Practical expertise working with Linux operating systems, virtualization technologies, Kubernetes, and cloud-native platforms.
• Demonstrated proficiency using Jira for defect tracking, project management, and operational workflow management.
• Mandatory legal eligibility to work in India with local residency and readiness for on-site operations in Bangalore.

Nice-to-Have Skills:

• Master’s degree in Telecommunications or Computer Science.
• Professional certifications in Kubernetes (e.g., CKA, CKAD), cloud platforms (AWS, Azure), or telecommunications networks.
• Experience with automated CI/CD pipelines (Jenkins, GitLab CI) and infrastructure-as-code (Terraform).
• Hands-on experience with industry-standard traffic generators and test tools (e.g., Spirent Landslide, Keysight IxLoad).