Specialist, Core Network, Roaming & VAS Operation

U Mobile; Shah Alam; On-site; MYR 70,000 - 100,000; Full time

Job summary

U Mobile in Shah Alam, Malaysia, seeks a Specialist/Engineer to provide Level 2 support for Core Network, Roaming Services and VAS, with a focus on international roaming. You ensure roaming availability, performance and service quality, handling steering, inter-operator connectivity and roaming signaling management.

You will monitor roaming across 2G/3G/LTE/VoLTE/5G, perform Level 2 troubleshooting, support partner onboarding, optimize steering policies and collaborate with roaming partners,

Qualifications

• Bachelor’s degree in Telecommunications, Electrical & Electronic Engineering, or a related field.
• Fresh graduates are encouraged to apply.
• Experience in telecom operations, core network, roaming operations, or international roaming services is an added advantage.
• Strong analytical, problem-solving, communication, and stakeholder management skills.
• Able to work in a fast-paced 24x7 operational support environment.
• Proactive, detail-oriented, and willing to learn.

Responsibilities

• Monitor and ensure the availability and performance of international roaming services across 2G, 3G, LTE, VoLTE, and 5G networks.
• Perform Level 2 troubleshooting for roaming-related issues, including attach failures, voice, SMS, and data service issues.
• Analyze signaling traces to identify root causes and support issue resolution.
• Support roaming partner onboarding, testing, and certification activities, including IREG and TADIG processes.
• Manage and optimize roaming steering configurations and policies.
• Coordinate with roaming partners, vendors, internal engineering teams, and marketing teams to support service rollouts and cross-functional initiatives.
• Monitor, detect, and mitigate spam, fraud, and suspicious traffic through mobile security and firewall management platforms.
• Continuously enhance mobile security firewall rules, detection capabilities, and operational effectiveness.
• Support operational improvement initiatives to enhance service reliability and customer experience.

Skills

Analytical

Problem-solving

Communication

Stakeholder management

Education

Bachelor's Degree in Telecommunications

Electrical & Electronic Engineering

Related field

Job description

Job Summary

The Specialist / Engineer is responsible for providing Level 2 operational support for Core Network, Roaming Services, and VAS platforms, with a primary focus on international roaming services. This role is responsible for ensuring the availability, performance, and service quality of roaming services, including roaming steering, inter-operator connectivity, roaming-related signaling operations, and mobile security management.

Day-to-Day Activities

• Monitor and ensure the availability and performance of international roaming services across 2G, 3G, LTE, VoLTE, and 5G networks.
• Perform Level 2 troubleshooting for roaming-related issues, including attach failures, voice, SMS, and data service issues.
• Analyze signaling traces (e.g., MAP, CAP, Diameter) to identify root causes and support issue resolution.
• Support roaming partner onboarding, testing, and certification activities, including IREG and TADIG processes.
• Manage and optimize roaming steering configurations and policies.
• Coordinate with roaming partners, vendors, internal engineering teams, and marketing teams to support service rollouts and cross-functional initiatives.
• Monitor, detect, and mitigate spam, fraud, and suspicious traffic through mobile security and firewall management platforms.
• Continuously enhance mobile security firewall rules, detection capabilities, and operational effectiveness.
• Support operational improvement initiatives to enhance service reliability and customer experience.

About You

• Bachelor’s Degree in Telecommunications, Electrical & Electronic Engineering, or a related field.
• Fresh graduates are encouraged to apply.
• Experience in telecom operations, Core Network, roaming operations, or international roaming services is an added advantage.
• Basic understanding of GSM, UMTS, LTE, and 5G roaming architecture, signaling protocols, and Core Network elements.
• Exposure to roaming steering, signaling analysis, mobile security, or firewall platforms would be beneficial.
• Strong analytical, problem-solving, communication, and stakeholder management skills.
• Able to work in a fast-paced 24x7 operational support environment.
• Proactive, detail-oriented, and willing to learn.

Spoken Language

Malay, English

Written Language

Malay, English