Core Network Engineer (One-Year Renewable Contract)

About the role

A one-year renewable contract for a Core Network Engineer based in Colombo. The role covers end-to-end analysis and troubleshooting of core network products, customer management experience, and Level 2/3 technical support for complex wireless network issues.

Key responsibilities

• Analyze and troubleshoot core products end to end, including call traces
• Troubleshoot problematic core calls using Wireshark or similar tools
• Optimize PS, CS and VoLTE services
• Execute firmware updates and hardware upgrades for network elements, controllers and routers
• Monitor network alarms, KPIs and network health
• Provide Level 2/3 technical support and perform root cause analysis

Required profile

• 5+ years of experience in mobile core network planning or engineering
• Bachelor's degree in Telecommunications, Electrical Engineering, Computer Science or a related field
• Customer management experience, including leading projects

Required skills

• Understanding of 3GPP standards and protocols such as GTP, SCTP, Diameter and HTTP/2
• Hands-on experience with core network elements (MME, SGW, PGW, AMF, SMF, UPF, DNS)
• Basic scripting in Python or Bash for automation

To apply, send an updated CV by email.