Senior Solutions Engineer – Signaling & Routing
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Job Description
Senior signaling engineer configuring Diameter routing and validating MNO interconnects for Skylo’s direct-to-device satellite connectivity. Troubleshooting live mobile-core traffic across IPX partners and global telecom networks.
Responsibilities:
- Design and configure signaling, DRA/DEA routing, peers, connections, realms, Diameter identities, GT mappings, and point-code mappings
- Translate MNO IR.21/RAEX profiles into accurate, version-controlled operational configurations
- Plan interconnect IP addressing and coordinate DNS/ENUM, APN, realm resolution, firewall/ACL, and IPX peering changes
- Own end-to-end IREG testing for network registration, attach sequences, S6a/S6d authentication, SGd SMS, and NIDD where applicable
- Analyze Wireshark signaling traces and resolve failures across Skylo, IPX providers, and partner MNOs
- Collaborate with Skylo IPX partners and MNO IPX teams to isolate routing and configuration issues
- Establish change-control, peer-review, rollback, and documentation practices
- Create Low-Level Design documents for every interconnection
- Partner with Network Engineering, NOC, Security, Product, and external MNO technical teams through go-live and stabilization
Requirements:
- 8+ years of hands-on experience in mobile-core signaling, roaming interconnect, telecom solutions engineering, or network operations
- Deep technical Diameter experience, including DRA/DEA configuration, realm routing, peer management, and S6a/S6d/SGd protocols
- Strong IP interconnect fundamentals, including DNS/ENUM, routing, security controls, and firewall/ACL coordination over IPX/GRX networks
- Advanced protocol analysis skills, including independently diagnosing signaling failures from Wireshark traces
- Experience translating IR.21/RAEX data into operational configurations and executing structured IREG validation
- Disciplined approach to change management, documentation, configuration integrity, and live production risk
- NB-IoT NTN, NIDD, MME registration troubleshooting, SS7/MAP, STP, or IoT roaming experience
- Hands-on experience with Oracle DSR, Mavenir, Nokia, or comparable carrier-grade signaling platforms
- Automation experience using Python, APIs, infrastructure as code, or network testing frameworks
- Ability to work legally in the U.S.; applicants are asked whether they require employment visa sponsorship
Benefits:
- Competitive compensation packages including a stock option-based equity program
- Comprehensive benefits including medical, dental, vision, and retirement plan
- Monthly allowances for wellness and education reimbursement
- A generous time-off policy and holidays
- Opportunity to temporarily work abroad
- Access to a world-class team across software, hardware, chipsets, telecom, satellite, and network virtualization
- Open, transparent, inclusive culture
- Health insurance
- Retirement plans
- Paid time off
- Equity options
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