Mobile Core Network Engineer
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Job Location:
Monthly Salary:
Posted on:
Yesterday
Vacancies:
1 Vacancy
Job Summary
About Telnyx
Telnyx is an industry leader thats not just imagining the future of global connectivitywere building it. From architecting and amplifying the reach of a private global multi-cloud IP network to bringing hyperlocal edge technology right to your fingertips through intuitive APIs were shaping a new era of seamless interconnection between people devices and applications.
Were driven by a desire to transform and modernize whats antiquated automate the manual and solve real-world problems through innovative connectivity solutions. As a testament to our success were proud to stand as a financially stable and profitable company. Our robust profitability allows us not only to invest in pioneering technologies but also to foster an environment of continuous learning and growth for our team.
Our collective vision is a world where borderless connectivity fuels limitless innovation. By joining us you can be part of laying the foundations for this interconnected future. Were currently seeking passionate individuals who are excited about the opportunity to contribute to an industry-shaping company while growing their own skills and careers.
The Role
Were looking for a Mobile Core Network Engineer to join the team responsible for Telnyxs global mobile core network. Youll own the infrastructure that powers our wireless platform keeping it reliable scalable and ready for what comes next. This is a hands-on role spanning network operations deployment automation and incident response.
What Youll Do
Network Operations & Infrastructure
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
Automation & Deployment
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
Observability & On-Call
Build dashboards and alerting to catch issues before they become incidents
Participate in on-call rotation for wireless infrastructure incidents
What Were Looking For
Solid understanding of 3GPP EPC architecture: PGW SGW HSS DRA PCRF STP and their interfaces (S6a S8 S5 Gx S1-MME)
Experience operating and troubleshooting mobile core network elements in production
Strong networking fundamentals: IP routing BGP/OSPF VLANs GRE/IPsec SCTP and packet-level troubleshooting (tcpdump/tshark)
Strong Linux skills: systemd network configuration performance tuning and scripting
Hands-on experience with infrastructure automation Ansible Terraform or equivalent
Familiarity with containerised environments (Docker Kubernetes) and CI/CD pipelines
Experience with monitoring stacks: Prometheus Grafana Alertmanager
Experience with AWS or similar cloud infrastructure
Nice to Have
Experience with Diameter Routing Agents (freeDiameter or commercial DRAs) or GTP proxy platforms
Knowledge of multi-IMSI SIM architectures VoLTE/IMS or roaming models (S8HR LBO)
Familiarity with IPX/GRX peering GSMA roaming standards (IR.34) or network automation tooling (Netbox NAPALM)
Experience with Elixir Go or Python in a network infrastructure context
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Required Experience:
IC
Key Skills
About Company
Your one-stop shop for infrastructure at the edge. The Telnyx Connectivity Cloud helps your business connect people, devices and applications everywhere.
