Senior IREG & Network Test Engineer

The world still has coverage blind spots. You could help eliminate them at Skylo.

Skylo has pioneered a standards-based approach to satellite connectivity. We connect smartphones and IoT devices directly to satellites. No special hardware no entirely new networks. Just billions of existing devices suddenly reachable anywhere on Earth. Were not building toward this future. Were already in it.

Our direct-to-device service is live on millions of activated devices across five continents covering more than 72 million square kilometers in partnership with leading satellite operators mobile network operators Tier-1 chipset makers and OEMs worldwide. And were just getting started.

At the heart of it all is Skylos commercial NTN vRAN: a 3GPP standards-based cloud-native platform that seamlessly bridges terrestrial and satellite networks. Its the infrastructure that makes true anywhere anytime connectivity possible.

When you join Skylo youll work at the intersection of three markets reshaping how the world stays connected: mass-market consumer devices automotive and industrial IoT. Enabling people outdoors and critical workflows in the worlds most remote places.

This is a rare chance to work on technology that matters at a company thats already proving it works

This role is located in Bangalore India where we are onsite 3 days a week in office.

Every MNO onboarding ends at a technical test gate. We are hiring an automation-oriented IREG & Network Test Engineer to own that gatefrom attach and authentication through SGD MAP SMS IP NIDD and roaming sign-off.

You will replace manual partner-dependent execution with a repeatable test strategy scalable lab and automated regression pipeline.

Strategy & Automation

• Own the IREG Testing Strategy: Define the roadmap for MNO onboardingincluding clear pass/fail criteria evidence requirements and sign-off processesso we can scale our roaming partnerships faster and more reliably.

• Drive Testing Innovation: Look beyond manual execution to build a long-term automation strategy that makes our roaming validation smarter faster and eventually hands-free.

• Adapt Standards for Space: Take standard GSMA roaming test suites and figure out whats missing for Non-Terrestrial Networks (NTN) designing new edge-case tests that bridge the gap between terrestrial and satellite.

• Build the Testing Lab: Design scale and maintain an automation harness capable of reliably running both standard GSMA and custom NB-IoT NTN scenarios.

Technical Execution & Troubleshooting

• Ensure End-to-End Interoperability: Validate the entire roaming journey (Registration S6a/S6d SGd IP NIDD) ensuring smooth handoffs across satellite and cellular networks.

• Translate Complex Tech into Test Cases: Build comprehensive test scenarios by combining GSMA standards partner network configurations and our unique NB-IoT NTN traffic profiles.

• Troubleshoot Across Borders: Dig into Diameter/SS7 traces and network logs to isolate and resolve complex routing or signaling issues happening anywhere between our network the IPX and the MNOs.

• Learn from Real-World Friction: Turn production snags and onboarding hiccups into automated regression tests to ensure we continuously improve and never fix the same bug twice.

Leadership & Collaboration

• Act as the Subject Matter Expert: Use your deep knowledge of 3GPP protocols (LTE/5G/NB-IoT NTN) and RAN/Core networks to guide engineering and product teams on technical decisions.

• Own the Defect Lifecycle: Dont just log bugstrack them down to the root cause partner with engineering on the fix and see them through to complete closure.

• Keep Leadership Informed: Build and share clear dashboards covering test cycle times defect rates and overall readiness so the business always knows where MNO onboarding stands.

• Collaborate Across Boundaries: Work hand-in-hand with internal teams (Signaling Billing NOC Product) and external partners (IPX MNOs) to get new networks launched smoothly.

• 5 years of experience in roaming mobile core interconnect IREG or telecommunications network testing.

• Hands-on understanding of Diameter and relevant SS7/MAP concepts including S6a/S6d SGd and roaming authentication and registration flows.

• Experience reading Wireshark or equivalent signalling traces and diagnosing network failures involving multiple parties.

• Experience designing automated telecommunications testing frameworks using Python or comparable languages and CI practices.

• Fluency with IR.21/RAEX PLMN IMSI TADIG and structured testing evidence.

• NB-IoT NTN NIDD IoT roaming GSMA test-suite or device-lab experience.

• Familiarity with IMSI Tracing Diameter/SS7 testing tools Jira Confluence and dashboarding.

• Experience integrating network testing with TAP and billing validation.

With employees working across three continents Skylo is proud to be an equal opportunity employer dedicated to building an inclusive and diverse workforce. Our worldwide and inclusive culture encourages a flexible approach to work and we also offer an attractive range of benefits such as:

• 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

• Once-in-a-lifetime opportunity to be part of developing and running the worlds first commercial live direct-to-device satellite network and service

• Access to a world-class team and talent across tech domains: software hardware chipsets telecom satellite and network virtualization

• Open transparent inclusive culture that blends Silicon Valley Nordic and South Asia characteristics

Skylo is an equal-opportunity employer and we celebrate diversity. We do not discriminate on the basis of race religion color ancestry national origin caste sex sexual orientation parent or caregiver status political affiliation gender gender identity or expression age disability medical condition pregnancy genetic makeup marital status or military service consistent with applicable federal state and local laws.

We are also committed to providing reasonable accommodations for qualified individuals with disabilities and disabled veterans in our job application procedures. Please let us know if you need assistance or accommodation due to a disability.

Required Experience:

Senior IC