Senior Core Network Engineer - 4G/5G & Satellite

astspacemobile; United States; Remote; USD 150,000 - 210,000; Full time

Job summary

astspacemobile is building a satellite-direct-to-mobile connectivity program and seeks a senior engineer to deploy, integrate, and validate 4G LTE EPC and 5G Standalone Core elements linking orbiting assets with standard handsets. This role is hands-on, deeply technical, and requires experience with virtualization, cloud-native platforms, and cross-functional collaboration.

You will own configuration, testing, and operator-facing artifacts, including design translations to detailed configs,

Qualifications

• 10+ years of hands-on telecom engineering experience with 3GPP core networks, configuration, and testing.
• Experience delivering large-scale LTE EPC and/or 5G SA core rollouts with major vendor stacks recommended.
• Operational command of VNFs/CNFs in Kubernetes/OpenShift and strong IP networking fundamentals (BGP, OSPF, QoS).

Responsibilities

• Deploy, integrate, and validate core network functions across virtualized/cloud-native platforms (EPC, AMF/UPF/SMF, SEPP).
• Translate architectures into detailed configurations for signaling interfaces (S1-AP, NAS, GTP-C/U, Diameter, HTTP/2, SCTP, PFCP).
• Build automation pipelines with Python, Ansible, Terraform, and Bash for deployments and operations.
• Run FAT/SIT/UAT campaigns including functional, regression, and performance testing of core services.
• Lead root-cause analysis of incidents and recommend KPI-driven optimizations for capacity and reliability.
• Produce engineering artifacts like configuration guides, procedures, test reports, and network diagrams.

Skills

3GPP core network

LTE EPC

5G SA Core

Kubernetes

OpenShift

VMware

BGP

OSPF

QoS

Wireshark

Cloud networking AWS/Azure/GCP

Education

Electrical Engineering

Telecommunications

Computer Science

Tools

Python

Ansible

Terraform

Bash

Kubernetes

OpenShift

OpenStack

Job description

astspacemobile is building a satellite-direct-to-mobile connectivity program and seeks a senior engineer to deploy, integrate, and validate 4G LTE EPC and 5G Standalone Core elements linking orbiting assets with standard handsets. This role is hands-on, deeply technical, and requires experience with virtualization, cloud-native platforms, and cross-functional collaboration.

You will own configuration, testing, and operator-facing artifacts, including design translations to detailed configs,