Your APIs, web services and servers, built to measure.
Your APIs, web services and servers, built to measure.
Your APIs, web
services and servers, built to measure.
Your APIs, web
services and servers, built to measure.
Your APIs, web
services and servers, built to measure.
APIs, web services, IoT and blockchain: the foundations that connect your systems.
.webp)
.webp)
.webp)
.webp)
.webp)
.webp)
They trust us.
They trust
us.
Startups, mid-caps, large enterprises, public sector: Kosmos Digital supports organisations of every size in building their application.
We connect your systems to one another.
From bespoke APIs to real-time IoT streams, all the way to smart contracts: we architect, secure and operate the server layer that keeps your data flowing, at scale and over the long term.
APIs & integrations
Beyond the simple endpoint: we design robust, documented and observable APIs that connect your services, your partners and your applications without friction.
- REST & GraphQL — OpenAPI contracts
- Webhooks & real-time events
- Third-party integrations (payment, CRM, ERP, etc.)
- OAuth 2.0 / JWT authentication, versioning & rate limiting
IoT & connected devices
From sensor to dashboard: we collect, harden and put to work your fleet's telemetry in real time, even when the network is unreliable.
- MQTT & LoRaWAN protocols
- Edge processing & real-time ingestion
- Remote telemetry, monitoring & alerting
- OTA firmware updates
Blockchain & Web3
We move past the hype: audited smart contracts and tamper-proof ledgers, wherever traceability and trust truly add value.
- Audited smart contracts (Solidity / EVM)
- Tokenisation & ERC-20 / ERC-721 standards
- On-chain traceability & certification
Entrust your project
to our app experts.
Entrust your project to our
app experts.
Entrust your project
to our app experts.
Our experts in application development build your project, delivering superior technical and functional quality within shorter timeframes.
The best technologies for your application.
We master the best services and technologies to develop, maintain and scale your web, mobile and AI applications.
AI-augmented approach, supervised by experts.
We use artificial intelligence as a lever for acceleration and optimisation within our technical processes, while keeping strong human oversight on every strategic phase of the project.
AI improves productivity. It does not replace:
- field experience
- architectural expertise
- understanding business stakes
- technical governance
- complex trade-offs
- cybersecurity
- operational accountability
Beyond visual and technical design, as well as AI-augmented programming, our teams act as a layer of validation, quality control, security hardening and steering, to ensure reliable, scalable deliverables that can operate in real-world environments.
Recover 20% of your project's development costs thanks to the Innovation Tax Credit
Naxan Group is CII-accredited. This means your company can claim a tax credit equal to 20% of the costs of developing its solution, which must be new and innovative in its reference market (outsourced expenses).
- 01You fill out form CERFA 2069-A-SDA document to complete when you file your tax return.
- 02You attach three supporting documentsPaid invoices, the CII accreditation, and the declaration.
- 03The credit applies automaticallyDeducted directly from the tax you owe.
Less than 2 years in business?
You can claim an direct and immediate refund (form 2573-SD), typically paid out within 1 to 3 months. Use it however you like: loan repayment, marketing, new features, maintenance, payroll, etc.
8 years of success,
by your side.
8 years of passion, boldness and innovation! Projects, challenges and successes. All thanks to you.
- Since
- 2018
- Years
- 08
They talk about us.
Explore the mentions and analyses that spotlight our work and our innovations across the business and tech press.
Let's discuss your project.
Describe your project. Our team replies within 24 hours with free technical scoping, along with a clear estimate of costs and timelines. No commitment.
- Reply within 24 hours from a project manager
or engineer.Reply within 24 hours from a project manager or engineer. - Technical scoping and quote, with no fees.
- No commitment, your data stays
confidential.No commitment, your data stays confidential.
Monday to Saturday · 9am to 6:30pm · Standard-rate number.
hello@kosmos-digital.com
Paris · Lyon · Marseille · Nice · Geneva
Your company may qualify for a tax credit equal to 20% of the costs linked to developing its solution.
Free scoping & estimate in under an hour
Describe your project and we'll get back to you with a costed estimate and a roadmap.