Senior Backend Engineer: 5G NTN & Cloud Platform

Front Door Defense; Greater London; Hybrid; GBP 110,000 - 150,000; Full time

Benefits offered by this job

Innovative environment

Impactful work

Growth opportunities

Inclusive culture

Flexible schedule

Health insurance

Job summary

Aalyria is seeking a Senior Software Engineer, Backend to design and build a cloud-native backend platform coordinating 5G NTN and Direct-to-Cell services. The role is based in London with remote UK work options.

You will drive distributed systems, RAN/CORE interfaces, and federation APIs, collaborating with solution architects and 3GPP/O-RAN standards teams. As part of the Spacetime team, you’ll implement scalable services, model networks, and coordinate with satellite operators and terrestrial

Qualifications

• Bachelor's degree in CS/Engineering or equivalent.
• Proficient in C++, Golang and/or Java.
• Experience with gRPC and Protocol Buffers.
• Experience building and operating distributed systems.
• Familiarity with wireless or satellite communications.
• Strong technical communication across functions.

Responsibilities

• Develop and maintain the Spacetime platform using C++, Golang, Java, gRPC, and Protocol Buffers.
• Build scalable, distributed systems on Kubernetes.
• Design and develop Spacetime features for 5G NTN and Direct-to-Cell orchestration.
• Translate 3GPP and O-RAN concepts into clean, well-tested software with solution architects.
• Integrate with other Aalyria platform components for end-to-end functionality.
• Develop and maintain documentation related to software design and implementation.
• Stay up-to-date with 5G NTN, O-RAN, and satellite communications.
• Write clean, maintainable, and efficient code.
• Troubleshoot and debug issues in the software.

Skills

C++ / Golang / Java

Distributed systems

Technical communication

Education

Bachelor's degree in Computer Science / Engineering or equivalent

Tools

gRPC

Protocol Buffers

Kubernetes

Job description

Aalyria is seeking a Senior Software Engineer, Backend to design and build a cloud-native backend platform coordinating 5G NTN and Direct-to-Cell services. The role is based in London with remote UK work options.

You will drive distributed systems, RAN/CORE interfaces, and federation APIs, collaborating with solution architects and 3GPP/O-RAN standards teams. As part of the Spacetime team, you’ll implement scalable services, model networks, and coordinate with satellite operators and terrestrial