Senior Staff Software Engineer, NR-NTN
About Skylo
Skylo is helping redefine how the world stays connected. At Skylo, our mission is to extend reliable connectivity to people, vehicles, and devices wherever they operate, even in the most remote and hard-to-reach places.
Skylo is a global connectivity company serving customers and partners worldwide. We enable satellite-based connectivity for everyday devices, helping smartphones, vehicles, and machines stay connected beyond traditional cellular coverage. Today, Skylo’s services are live on millions of devices across five continents, supporting use cases across consumer devices, automotive, and industrial sectors.
About Skylo Technologies
Skylo is a global Non-Terrestrial Network service provider, offering a service that allows smartphone and IoT cellular devices to connect directly over existing satellites. Skylo’s direct-to-device service is now live on millions of activated devices across five continents, with more than 60 million square kilometers of coverage, in partnership with multiple satellite operators, mobile network operators (MNOs), Tier-1 chipset makers, and OEMs. Devices connected over satellite are managed and served by Skylo's commercial NTN vRAN, featuring a 3GPP standards-based cloud-native base station and core. Skylo provides an anywhere, anytime connectivity solution that seamlessly roams between terrestrial and satellite networks. Our focus is on enabling connected services for people outdoors and connected workflows across three main verticals: mass-market consumer devices, automotive, and industrial IoT.
This role is located in Espoo, Finland where we are onsite 3 days a week in office.
Summary Of How You Will Impact Skylo
As a staff software engineer, you will be the technical visionary driving the development of Non-Terrestrial Network (NTN) capabilities within our gNodeB software stack. This role sits at the intersection of traditional cellular protocol engineering and the evolving domain of satellite communications. You will oversee the entire software lifecycle—from 3GPP feature analysis to high-level architectural design—ensuring our RAN systems meet the unique timing and mobility challenges of satellite-integrated 5G.
How You Will Contribute
Architectural Leadership: Lead the end-to-end design, development, and maintenance of 5G NR L2/L3 protocol stacks and MAC-Schedulers specifically optimized for NTN (LEO/GEO) environments.
Requirement Analysis: Translate 3GPP Release 17/18+ NTN specifications into actionable software requirements and technical roadmaps.
Design & Development: Author High-Level Designs (HLD) and Low-Level Designs (LLD) for gNodeB components, focusing on compensation for large propagation delays and high Doppler shifts.
Feature Prioritization: Analyze and prioritize 3GPP features (e.g., HARQ disabling, timing advance enhancements, and cell discontinuous coverage) for integration into the RAN subsystem.
Mentorship & Quality: Provide technical guidance to development teams, perform code reviews, and ensure the architectural integrity of the product during maintenance and delivery phases.
What We Look For
Experience: In LTE/5G NR protocol software development, with at least 3 years in an Architect or Lead Developer role.
Satellite Domain: Proven track record of adapting terrestrial RAN software for satellite payloads or transparent/regenerative architectures.
Testing: Experience with UE simulators and channel emulators configured for high-latency satellite profiles.
Education: Bachelor’s or Master’s degree in Computer Science, Telecommunications, or Electronic Engineering.
What We Offer
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 benefits such as:
Competitive compensation packages including a stock option based equity program
Comprehensive benefits plan
Monthly allowances for wellness and education reimbursement
Dental plans as well as Health and Life Insurance
Commuting allowance
Phone and Internet allowance
Daily lunch allowance
A fantastic L&D budget for further personal and professional development.
A generous time off policy, holidays, and the opportunity to temporarily work abroad
Once in a lifetime opportunity to be a part of developing and running world’s first commercial, live direct-to-device satellite network and service
Access to world-class team and talent across tech domains: software, hardware, chipsets, telecom, satellite and network virtualization
Open, transparent, inclusive culture that blends the Silicon Valley, Nordic and South Asia characteristics
