5G/45 Core Network Engineer

Description

**Position Overview** We are seeking an experienced Network Engineer with strong expertise in 4G/5G core networking technologies to support testing, deployment, optimization, and upgrade activities in a complex telecommunications environment. This is a long\-term consulting engagement requiring collaboration with engineering teams, participation in network testing initiatives, production deployment support, and network design consultations. The ideal candidate will possess deep knowledge of 4G/5G core technologies, cloud\-native networking, network virtualization, and advanced routing protocols. The engineer will work PST business hours and partner closely with project stakeholders to ensure successful delivery and operational excellence. **Key Responsibilities** * Support lab and production testing activities for core network technologies. * Execute and document network testing plans, reporting findings and recommendations. * Participate in customer and stakeholder meetings to understand testing objectives and operational requirements. * Design and implement lab upgrades, network enhancements, and new feature deployments. * Develop migration guides and support lab\-to\-production transition activities. * Provide technical consultation on network architecture, scalability, resiliency, performance, and Quality of Service (QoS). * Support network change management activities, including impact analysis and implementation reviews. * Assist with troubleshooting and production deployment support during major network changes. * Participate in recurring technical meetings and service reviews. * Create and maintain technical documentation, test reports, migration guides, and operational deliverables. * Provide knowledge transfer and informal technical training when required. **Required Technical Skills** **4G/5G Wireless \& Core Network Expertise** * Deep understanding of 4G and 5G technologies. * Strong knowledge of: * 3GPP / 3GPP2 standards * 5G Standalone (SA) and Non\-Standalone (NSA) architectures * Service\-Based Architecture (SBA) * Service Mesh * Network Functions: * AMF * SMF * UPF * PCF * Network slicing * VPP * Data modeling techniques including fragmentation, peer\-to\-peer (P2P), and content filtering. **Cloud\-Native \& Virtualization** * Network Function Virtualization Infrastructure (NFVI). * Virtualization technologies. * Cloud\-native networking deployments. * Hands\-on experience with: * Kubernetes * Docker * OpenShift * Microservices architectures. **Networking Fundamentals** Strong Layer 2 and Layer 3 networking experience, including: * BGP * BFD * IS\-IS * OSPF * Static routing. **Automation \& Systems Engineering** * Network test automation experience. * Python 3 development/scripting. * Unix/Linux administration. * Shell scripting. * Performance testing and scaling expertise. * System engineering experience. * Understanding of telecom call models and network performance optimization. Job Type: Contract Contract length: 18 months Pay: R$150\.00 \- R$215\.00 per hour Experience: * 5G/4G (Required) Work Location: Remote