» Senior Backend Engineer – Core Services

Airnity; France; Hybride; EUR 70 000 - 110 000; Plein temps

Résumé du poste

Airnity, a fast-growing French telecoms company, is hiring a Senior Backend Engineer to own and operate core services in a fully remote setup in France. You will work on B/OSS API, Datalake, and provisioning gateway, ensuring reliability, observability, and scalable design.

You bring solid production experience as a backend engineer, be fluent in English (French helpful), and know Elixir. You will influence architecture, implement CI/CD, and contribute to internal tooling and AI initiatives.

Qualifications

• Proven experience as a Backend Engineer in production systems.
• Strong Elixir knowledge and distributed systems experience.
• Experience with cloud native tooling (GCP, CI/CD) appreciated.
• Willingness to work remotely from France and communicate in English.

Responsabilités

• Design and oversee backend architecture of core services.
• Implement and operate CI/CD pipelines and automated tests.
• Write clear documentation for internal users and teams.
• Own components end-to-end in a manager-free, autonomous setup.

Connaissances

Backend engineering

Elixir

Production systems

On-call

CI/CD

English language

French language

Outils

GCP

ArgoCD

CrossPlane

GitHub

LLM tooling

OSS/BSS

Internal tooling

Description du poste

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.

Our Core Services circle owns the components that sit between our telecom network and everyone who uses it : our OEM partners, our support teams, and our own engineers.

That surface keeps growing and we need a senior pair of hands to build, maintain and operate it with us:

The B/OSS API , the one that enable management of subscriptions and SIM cards lifecycle

The Datalake API

The Provisioning Gateway , transforming high level commands on subscriptions into configuration of the telecom network

SMS , OTA updates , local profile orchestration – using local virtual SIM card in country's that required it

Within the circle, you will be involved in defining, developing and operating these components so they stay reliable, observable and easy to build on.

In particular, you will be tasked with working on:

• Business back-ends — managing users, subscriptions, SIM and subscriber lifecycle
• Technical back-ends — implementing and operating telecom functions (provisioning, SMS, OTA, local profile orchestration)
• Interfaces — the unified API gateway and the Datalake interfaces we expose internally and to partners

No prior knowledge of Telecom specifics is required – you will receive training on this during the development process.

Your responsibilities will include:

• Design and architecture
• Selection of technologies to implement
• Implementation of continuous integration and deployment
• Writing automated tests
• Operating the solutions, including taking part in on-call
• Documenting what you build, for the people who will use and maintain it

You will also help build our internal tooling and AI platform

Alongside our Tools Engineer , you will contribute to the tooling that makes the rest of the company faster : scripts, automations and integrations across our workflows, and the AI platform we are building to put those capabilities in everyone's hands . Concretely, that means designing and implementing solutions from the needs our workflow owners bring, testing and validating them before release, and maintaining them once they are live.

This is a real part of the job — not a side quest — but Core Services components come first.

• GCP
• ArgoCD & CrossPlane
• GitHub

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 solid experience as a Backend Engineer , and you have carried systems in production — not just shipped them.

You have previously messed up a production database migration .

Deploying multiple times to avoid downtime resonates with you.

Seeing the test suite pass gives you a particular satisfaction.

AI is already part of how you work — and you review its output the way you would review a colleague's pull request. You reach for it by reflex, you know the tasks where it earns its place and the ones where it wastes your time , and you have never shipped something you could not explain.

You are comfortable owning a component end to end , in an organization with no managers telling you what to do next.

You speak French and are comfortable with English .

You already know Elixir

OSS/BSS rings a bell with you

You have built internal tooling, or shipped something on top of LLMs, and you know the difference between a demo and a system people rely on