Skylo

Technology

SeniorSoftwareEngineerNR-NTNProtocols(L2&L3)

€70–105k ~AI est. Espoo, Finland FULL TIME
Market Sentiment
HIGH DEMAND

Neural analysis suggests this role is
optimal for Senior candidates.

The Brief

“Senior Software Engineer – NR-NTN Protocols (L2 & L3) at Skylo. Skills: NR-NTN Protocols, Layer 2, Layer 3, Protocol Stack. Design, develop, and maintain C++ implementations. Implement NTN-specific L2 adaptations”

Industry & Context.

Technology
Problems you'll solve

Root-cause analysis; Debugging; Performance tuning

What They're Looking For.

Must Have

2+ years wireless/telecom protocol development, Master's or PhD degree, Proficiency in C++ (C++14/17), Solid understanding of 5G NR Layer 2 protocols, Deep, implementation-level knowledge of RRC, Solid understanding of UE context lifecycle, Experience with Linux kernel/user-space debugging tools, Proficiency in production-grade protocol software, Ability to read 3GPP specifications

Nice to Have

Experience with AI coding assistants

What You'll Do.

and maintain C++ implementations

Implement NTN-specific L2 adaptations

Develop NTN-specific RRC enhancements

Implement RRC measurement framework

Implement RRC connection control procedures

Collaborate with Core Network teams

Validate NGAP procedures

Translate 3GPP specifications

Derive software requirements

Create detailed L2/L3 designs

Participate in code reviews

Contribute to technical documentation

Contribute to design specifications

Use AI coding assistants

How You'll Work.

Team & Collaboration

Standards teams; Systems teams; Integration teams; Core Network teams; MNO integration teams

Full Job Description

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. We're not building toward this future. We're 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 we're just getting started.   At the heart of it all is Skylo's commercial NTN vRAN: a 3GPP standards-based, cloud-native platform that seamlessly bridges terrestrial and satellite networks. It's the infrastructure that makes true anywhere, anytime connectivity possible.   When you join Skylo, you'll 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 world's most remote places.   This is a rare chance to work on technology that matters, at a company that's already proving it works This role is based in Espoo, Finland, one of Skylo's core engineering hubs and fastest-growing sites. You'll work onsite three days a week as part of a team that's scaling quickly. HOW YOU WILL IMPACT SKYLO We are seeking a highly skilled Senior Software Engineer to join our Protocol Stack team, focused on the development and optimization of 5G New Radio Non-Terrestrial Network (NR-NTN) Layer 2 and Layer 3 protocol implementations. In this role, you will design, implement, and validate MAC/RLC/PDCP and RRC protocol software that runs on Skylo's NTN vRAN platform, working closely with our standards, systems, and integration teams to bring NR-NTN connectivity to market at scale. WHAT YOU’LL

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