Senior Solutions Architect (Signaling & Routing)

Skylo has pioneered a standards-based approach to satellite connectivity, connecting smartphones and IoT devices directly to satellites without special hardware or new networks. Our direct-to-device service is live on millions of activated devices across five continents, covering over 72 million square kilometers. At the core is Skylo's commercial NTN vRAN: a 3GPP standards-based, cloud-native platform bridging terrestrial and satellite networks. This role offers the chance to work at the intersection of mass-market consumer devices, automotive, and industrial IoT, enabling connectivity in remote places.

About The Role

Skylo is seeking a highly technical, hands-on Principal Signaling and Routing Specialist to turn each Mobile Network Operator’s (MNO) IR.21/RAEX profile into production-ready Diameter connectivity and validated live traffic. You will own the operational technical path from interconnect design through DRA/DEA configuration, IP/DNS/ENUM readiness, IREG execution, troubleshooting, and operational handoff. This role is fully remote.

Responsibilities

• Routing Configuration: Design and configure Signaling, DRA/DEA routing, peers, connections, realms, Diameter identities, and relevant GT and point-code mappings.
• Profile Translation: Translate IR.21/RAEX inputs into accurate, version-controlled operational configurations.
• IP & DNS Coordination: Plan interconnect IP addressing and coordinate DNS/ENUM, APN, realm resolution, firewall/ACL, and IPX peering changes.
• IREG Execution: Own end-to-end IREG-side testing for network registration, attach sequences, S6a/S6d authentication, SGd SMS, and NIDD where applicable.
• Trace Analysis: Analyze signaling traces (Wireshark) and resolve failures spanning Skylo, the IPX provider, and the partner MNO.
• Component-Level Isolation: Navigate and collaborate with Skylo IPX partners and MNO IPX teams to isolate routing and configuration issues at the component level.
• Standardization: Establish clean change-control, peer-review, rollback, and documentation practices, creating LLD (Low-Level Design) documents for every interconnection.
• Cross-Functional Partnering: Partner with internal 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 with the ability to read Wireshark traces to independently diagnose signaling failures.
• Proven experience translating complex IR.21/RAEX data into operational configurations and executing structured IREG validation.
• A disciplined approach to change management, documentation, configuration integrity, and live production risk.

Qualifications

• 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.

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, holidays, and the opportunity to temporarily work abroad.
• Access to a world-class team across software, hardware, chipsets, telecom, satellite, and network virtualization.
• Open, transparent, inclusive culture blending Silicon Valley, Nordic, and South Asia characteristics.

Pay

The estimated base salary range for this role is:

• San Francisco, CA: $155,000 — $165,000
• Other US Locations: $135,000 — $145,000

Within the range, individual pay is determined by work location and additional factors, including job-related skills, experience, and relevant training. In addition to base salary, Skylo offers a competitive benefits package including health insurance, retirement plans, paid time off, and equity options.