Staff Network Reliability Engineer

The role

You will serve as the 5G Core domain authority for Skylo's production NTN network. You will own 24x7 network health, lead high-level technical investigations for Core-domain incidents, and mentor Senior NREs.

What you will do

• Own 24x7 5G Core health across the production NTN stack
• Monitor and triage Core NF alarms using OSS dashboards and telemetry
• Execute and own Core-domain runbooks for P2–P4 fault categories
• Maintain DMP certificate management procedures
• Own IMSI lifecycle operations including activation and deactivation
• Serve as the L3 escalation authority for all Core-domain incidents
• Lead Core-domain troubleshooting bridges
• Diagnose and resolve Core failure modes
• Engage vendors with technical specificity and manage ticket lifecycles
• Own Core-domain RCA end-to-end

Required qualifications

• 8–10+ years of experience in 5G/4G Core operations or Core engineering in a production 24x7 environment
• Deep 3GPP Core expertise including TS 23.501/23.502, NAS protocol, NG-AP/S1AP, IMS architecture, IMSI lifecycle procedures, and subscriber provisioning flows
• Production 5G Core NF troubleshooting ability
• Proficiency in Wireshark or equivalent for NAS, SIP, Diameter, and HTTP/2 protocol-level analysis
• Kubernetes-native Core operations including pod health, PVC management, and kubectl proficiency
• Production observability using Prometheus/Grafana or other tools
• Runbook authorship ability
• ITSM proficiency (Jira, ServiceNow, or equivalent)
• Strong written and verbal communication

Nice to have

• Experience with NTN or satellite connectivity Core operations
• IMS operational experience
• Experience with OSS/BSS platforms
• Familiarity with Core NF vendors such as Druid, Nokia, Mavenir, Samsung, or Oracle Core
• Scripting ability in Python or Bash
• Experience contributing to closed-loop automation requirements or service assurance platform development
• ITIL certification or demonstrated application of ITIL processes

Benefits

• Competitive compensation packages including a stock option based equity program
• Comprehensive benefits plans
• Monthly allowances for wellness and education reimbursement
• A generous time off policy, holidays, and the opportunity to temporarily work abroad

About the company

Skylo has pioneered a standards-based approach to satellite connectivity, connecting smartphones and IoT devices directly to satellites. Their direct-to-device service is live on millions of activated devices across five continents.