» Senior Backend Engineer – Core Network

Airnity; France; Hybrid; EUR 90,000 - 120,000; Full time

Job summary

Airnity is a rapidly growing French telecoms company focused on cloud-native backends and 5G network components. You will design and develop Kubernetes-backed software for 5G-SA network nodes and related cloud integrations, working in a fully remote setup across France.

The role emphasizes backend engineering fundamentals, autonomy, and the ability to learn standard 3GPP specifications while collaborating with a multidisciplinary team in a Holacratic structure.

Qualifications

• At least 7 years of experience in cloud backend software development.
• Proficient in Elixir, Golang and Rust.
• Strong knowledge of Kubernetes and public cloud platforms.
• Fluent in English and French.

Responsibilities

• Contribute to design and architecture of critical 5G/telecom backend systems.
• Implement CI/CD pipelines and automate tests.
• Develop and operate Kubernetes-based services and cloud integrations.
• Collaborate with multidisciplinary teams in a Holacracy environment.

Skills

Backend development

Cloud technologies

Kubernetes

Elixir

Golang

Rust

English

French

Tools

Kubernetes

GitHub Actions

Public Cloud

Job description

Airnity is a rapidly growing French company in the telecommunications field. We are a mobile operator serving automotive manufacturers and helping them meet the challenge of ultra-connected vehicles .

One of our strengths as a telecom operator is that we heavily use "cloud-native" technologies . This allows us to have an extremely agile approach to our business and position ourselves as a viable alternative to traditional players.

We know it's hard to recruit in the Telecom space – don't try to check all the boxes

Within the Engineering team, you will take part in defining and developing critical systems for a Telecom operator . Your work will be focused on 5G-SA network nodes and a Kubernetes Operator.

About 5G-SA Network Nodes (No telecom experience required!)

5G-SA (Standalone) network nodes are the core software components that power modern 5G networks. Think of them as high-performance, distributed microservices that handle critical network functions like user authentication, session management, data routing, and service orchestration.

Key technical challenges you'll tackle

Scale : Handle millions of concurrent connections and massive data throughput

Latency : Sub-millisecond response times for critical operations

Reliability : Zero-downtime deployments and fault-tolerant design

Standards compliance : Implement well-defined 3GPP specifications (we'll teach you these)

Airnity also fosters an innovative approach to telecom networks. In this context, you will work alongside a multidisciplinary team on various research and development projects:

Development of solutions enabling slicing

Integration into Kubernetes and public cloud

GitHub / GitHub Actions

Your mission will cover the entire lifecycle of these systems

Design and architecture of these systems

Implementation of continuous integration and deployment

Writing automated tests

Operation of the solutions

We value strong backend engineering fundamentals and will provide domain-specific training.

As Airnity is organized as a Holacracy , you will have complete freedom to propose the role or roles you wish to take on in order to best benefit the team with your experience . You can also develop new skills by choosing other roles.

Airnity is a full-remote company , allowing you to work from anywhere in France, with the possibility of occasional co-working .

And you?

You have at least 7 years of experience in software development in Cloud backend development and are open to languages such as Elixir, Golang, and Rust.

You are autonomous and take part in all activities necessary for development (definition, architecture, tooling, testing, operations, support).

You speak French and you are fluent in English.

Knowledge of Kubernetes and public cloud