Core Network Engineer (CS/IMS)

About the role

Tangent International is looking for a Core Network Engineer (CS/IMS) to join a 6-month rolling contract in Brazzaville or Pointe-Noire, Congo. The engineer supports the daily operation, maintenance, configuration and optimisation of live CS/IMS core networks, including routine monitoring, emergency fault resolution, upgrades, service configuration, performance analysis and technical documentation.

Key responsibilities

• Conduct daily inspections, alarm monitoring and performance analysis across CS/IMS network elements.
• Monitor traffic indicators, trunks and signalling links.
• Localise and troubleshoot core-network faults and prepare analysis reports.
• Implement equipment version upgrades and patch loading.
• Configure number analysis, routing and service data.
• Investigate congestion, call failures and roaming failures.
• Collaborate with radio, wireless and transmission teams on end-to-end issues.
• Maintain network inventories, local data and topology documentation.
• Coordinate with telecom operators and equipment vendors.

Required profile

• Ideally 1-3 years of CS/IMS communications or core-network O&M experience.
• Bachelor's degree in Communication Engineering, Electronic Information or a related field.
• Good communication and language skills.

Required skills

• Hands-on knowledge of CS/IMS core-network operations and maintenance.
• Familiarity with MSC, MGW, HLR, VLR, STP, GMSC and IMS nodes.