Telnyx is hiring a Mobile Core Network Engineer

About the Role

Role details below.

Responsibilities

• Deliver and maintain core network services across global datacenters — ensuring high availability of PGWs, DRAs, GTP proxies, HSS, and STPs
• Design redundancy patterns (failover, active-active, disaster recovery) and drive service localisation in new regions
• Manage the GTP proxy fleet and DRA infrastructure: routing rules, IMSI translation, realm routing, and peer management
• Monitor traffic growth, forecast demand, and scale infrastructure ahead of need
• Build and maintain Ansible playbooks and CI/CD pipelines for consistent, repeatable infrastructure changes
• Operate and evolve the signalling plane — Diameter, GTP-C/U, SS7 MAP — across roaming partner interconnects
• Design and maintain network connectivity: GRX/IPX peering, inter-datacenter tunnels, SCTP multihoming, and firewall rules
• Build dashboards and alerting to catch issues before they become incidents
• Participate in on-call rotation for wireless infrastructure incidents

Benefits

• Financially stable and profitable company allowing investment in pioneering technologies
• Environment of continuous learning and growth for team members

Work Arrangement

Remote (Worldwide)

Additional Information

• The role is part of the team responsible for Telnyx’s global mobile core network
• This is a hands-on role spanning network operations, deployment automation, and incident response
• On-call participation is required for wireless infrastructure incidents