About the position
Main Purpose
The experienced Mobile Core Network 4G/5G Engineer will be responsible for implementing and optimizing mobile core networks with a strong focus on MOCN. Your expertise in core network planning, deployment, and optimization will be crucial for ensuring high-quality network performance and seamless interoperability.
Network Design
- Develop and design end-to-end 4G/5G core network solutions, with a focus on MOCN and roaming scenarios.
- Ensure scalability, reliability, and security in network designs.
- Traffic model and Capacity Management is required to ensure that the network nodes and links are adequately sized
- Number range management
- E2E FWA solution design, including Provisioning, Charging, Mobile Data Core (4G/5G) and RAN
Configuration Management
- Deploy and integrate core network components, working closely with vendors and partners.
- Able to configure all components of the Mobile Core 4/5G network
- Ensure seamless integration with other MNOs for national roaming on 4G/5G networks.
- Signalling Protocols: In-depth knowledge of key signalling protocols, including:
- 4G (LTE): S1AP, X2AP, GTP, Diameter, SCTP, SIP.
- 5G: NGAP, XnAP, HTTP/2, PFCP, SBI.
Network Optimization
- Perform network performance analysis and optimization to enhance coverage, capacity, and quality of service.
- Implement optimization strategies for MOCN and roaming scenarios.
- Monitor network performance and troubleshoot issues to maintain optimal operation
- Provide regular reporting of the whole network and the FWA Service
- Review and report on network usage and customer usage
MOCN & RAN Integrations
- Implement MOCN on other MNOs' RAN infrastructure
- Ensure proper configuration and management of shared RAN resources
- Setting up the correct pooling and high availability configurations between the Mobile Core and RAN
- Ensure seamless mobility between 4G/5G sites.
IP Networking
- Implement and manage IP networking protocols (BGP, OSPF, MPLS) to ensure efficient data flow
- Configure and troubleshoot IP routers, switches, and firewalls
- Setting up of DNS servers including setting up authoritative and caching DNS servers
- Customize solutions to meet specific requirements and resolve integration issues
- Create technical documentation, including network diagrams and guidelines
- Maintain up-to-date records of network configurations and changes
Key Decisions:
- Reviews RAN Network configurations and approves them for implementaiton
- Make recommendations on Upgrades and Expansion Plans
- Makes recommendations for network evolution
- Decides the KPIs required for FWA service and provide the relevant reports
Accountable for:
- Accountable for the capacity Management of the network providing the E2E FWA service
- Accountable for the network quality and support of the E2E FWA service
- Accountable for mobile Number Management
- Accountable for Traffic Model Management
Formal Qualifications Required
- In-depth understanding of 4G and 5G core network technologies, including EPC, IMS, and telecom call flow/processes.
- 2+ years of experience in designing and deploying mobile core network solutions, with a focus on MOCN and roaming scenarios.
- Relevant certifications (e.g., CCNA, CCNP, 3GPP) are a plus. (DESIRABLE)
- Strong problem-solving skills and ability to work in a fast-paced environment.
Job Related Experience Required
- Planning and Configuration on Core Network Elements including all components of EPC and 5G Core | 3+ Years | Essential
- Strong knowledge of Linux networking, including DPDK applications and SRIOV interfaces. | 3+ Years | Desirable
- Solution design and architecture | 2+ Years | Desirable
- Project Management, multiple project handling | 2+ Years | Desirable
- Service delivery and management | 2+ Years | Desirable
Job Related Knowledge Required
- 4G/5G Core Network Technologies
- Familiarity with 3GPP standards and protocols
- Thorough knowledge of managing and supporting Roaming architectures such as MOCN (DESIREABLE)
- Implementation of IP networking protocols (BGP, OSPF, MPLS)
Job Related Skills Required
- Analytical and design skills
- Technical writing
- Presentation skills
- Time management
- Ability to work under pressure
- Telecoms infrastructure knowledge
- Design thinking and solutions focus
Board/Professional Membership Required
- Engineering Council of South Africa (ECSA) (DESIRABLE)
- Industry Technology Certifications E.g. Security/Networking/Digital/Cloud/Applications (DESIRABLE)
- TM Forum SID certification (DESIRABLE)
- TOGAF (DESIRABLE)
Desired Skills:
- Configuration
- IP Networks
- Networks
- Optimization
