SalaryPeak

Mobile Core Network Ops Engineer (4G/5G)

CYGNIFY PTE. LTD.
Singapore 3+ years Posted 4w ago

Salary Range

SGD 36,000 - SGD 72,000 /year

SGD 3,000 - SGD 6,000/month

Skills Required

SwitchesCommunicationSS7Cisco Routing & SwitchingTelecommunication IndustrySIPProtocolNetwork TroubleshootingCore NetworkNetworkingVolTEIMSNetwork SecurityElectronicsFirewalls

Job Description

Role: MobileCore Network Ops Engineer (4G/5G)
Location: Singapore


We are partnering with a leading organisation to hire a Mobile Core Network OpsEngineer (4G/5G) to support critical telecom infrastructure and ensure seamlessnetwork operations.

About theRole

You will beresponsible for the operation, maintenance, and troubleshooting of 4G/5G corenetwork systems, ensuring high service availability and performance, includingsupport for international roaming services.

KeyResponsibilities

  • Manage and support 4G/5G Mobile Core nodes (e.g., IMS, HSS, UDM, SBC, MSS, etc.) to ensure smooth network operations
  • Perform system maintenance, including patching, upgrades, and performance optimisation
  • Monitor network performance, KPIs, and alarms to maintain service quality
  • Troubleshoot and resolve end-to-end network issues across core systems
  • Collaborate with local providers and international roaming partners for testing and service assurance
  • Implement security hardening and vulnerability management to mitigate risks
  • Develop and maintain operational processes and documentation

Requirements

  • Degree in Electronics, Communications, Networking, or related field
  • Minimum 3-5 years of experience in the Telco industry
  • Strong knowledge of 4G/5G core networks and call flows
  • Familiarity with protocols such as IMS, VoLTE, SS7, Diameter, SIP, SCTP
  • Hands-on experience in network troubleshooting (end-to-end)
  • Exposure to VoLTE roaming and IREG testing
  • Understanding of network and application security
  • Knowledge of IP networking (switching & routing)
  • Experience working with Linux and virtualised environments
  • Basic scripting/programming skills (e.g., Python, Shell)

UEN: 202329526G

EA Licence: 23S2061