Job Title

Who We Are!GXC is an Austin, Texas-based company behind GXC Onyx — a turnkey private cellular network solution that enables enterprises to accelerate their digital transformation journeys. Built on a cellular mesh architecture, GXC Onyx delivers reliable, secure, and scalable connectivity for even the most challenging environments. For more information, follow us on LinkedIn or visit are we looking for?We are looking for an experienced System Verification Test & Support Engineer with strong expertise in LTE/EPC, 5G Core, and enterprise networking. The role involves end-to-end system validation, production support, and close collaboration with customers and engineering teams to ensure high-quality deployments and operational excellence.ResponsibilitiesReview requirements and design documents; create structured System Test Plans and HLDs/LLDs.Design and deploy lab setups and production network topologies.Execute system testing and Acceptance Testing (AT) in lab and production environments.Provide L2/L3 support for deployed networks as per SLA commitments.Perform upgrades during maintenance windows with minimal disruption.Support commissioning, deployment, and post-deployment troubleshooting.QualificationsBeach / B.E. in Electronics & Communication.Excellent communications skills6–8 years of hands-on experience in EPC and/or 5G Core with strong networking fundamentals.Technical SkillsStrong knowledge of EPC, 5G Core, and O-RAN architectures; solid understanding of call flows and signaling.End-to-end validation experience (Throughput, S1/X2/NG HO, SON/ANR, Pooling, QoS, HA).Hands-on with S1AP, X2AP, NGAP, NAS; proficient in packet analysis using Wireshark.Experience with Kubernetes-based NMS for OAM/FCAPS.Strong enterprise networking skills: routing, switching, VLANs, DHCP/DNS, GRE, firewall configuration, and IPSec — particularly for N6 (5GC) and SGi (EPC) integration.Strong debugging skills for throughput, session failures, handovers, and service disruptions.Working knowledge of Linux.