Infrastructure Engineer

AST SpaceMobile is building the first and only global cellular broadband network in space to operate directly with standard, unmodified mobile devices based on our extensive IP and patent portfolio and designed for both commercial and government applications. Our engineers and space scientists are on a mission to eliminate the connectivity gaps faced by today’s five billion mobile subscribers and finally bring broadband to the billions who remain unconnected.

Position Overview

We are seeking a NOC Infrastructure Engineer (Service Assurance) to monitor, triage, and ensure the stability of the physical network and compute layer of our telco environments. This role ensures the reliability, performance, and scalability of networks, firewalls, server hardware, racks, power, cabling, and related physical systems that support global production, lab, and test workloads, as well as satellite connectivity across signaling, routing, SIM provisioning, OSS integrations, and core-network interactions. This role handles alarms, validates routing behavior, diagnoses signaling and gateway/core issues, and coordinates closely with partner NOCs to maintain high availability across commercial and beta-grade connectivity flows. The ideal candidate brings deep hands-on experience with datacenter operations, Cisco networking, physical computer hardware, and infrastructure best practices. Reporting to the Service Assurance Manager, this role plays a critical role in 24/7 operational continuity and rapid incident response. 

Key Responsibilities:

• Monitor infrastructure pathways, routing behavior, SIM flows, OSS hooks, and cross-core interactions impacting network connectivity.
• Detect, acknowledge, and triage alarms from monitoring platforms, ensuring rapid response and detailed logging.
• Escalate anomalies based on severity, impact, and operational thresholds.
• Manage firmware, BIOS, and device-level updates to ensure reliability and security.
• Maintain accurate inventory of physical compute assets, spares, and components.
• Validate telco network behavior during faults or degradation events.
• Diagnose issues across physical infrastructure affecting telco connectivity.
• Perform routine datacenter health checks, environmental monitoring, and audits.
• Perform detailed event analysis, correlate logs, and support root-cause investigations with engineering teams.
• Collaborate with SRE, cloud, networking, and platform teams to support high-availability workloads.
• Troubleshoot hardware and OS-level issues (Linux/Windows) during physical interventions.
• Maintain consistent communication loops and follow defined escalation paths.