GraphQL
The typed query language for APIs that returns only what's needed.
GraphQL exposes a single typed schema on which the client precisely composes the data it needs in a single request. It avoids over-fetching and under-fetching of classic REST and facilitates API evolution consumed by multiple clients (web, mobile).
What GraphQL brings to your project.
Typical use cases: APIs consumed by web + mobile, source aggregation, BFF.
- 01
Typed schema: explicit, self-documenting API contract.
- 02
Client chooses its fields: no over-fetch or under-fetch.
- 03
Single request aggregates multiple resources.
- 04
Mature ecosystem: Apollo, urql, codegen, federation.
Discover our services and offerings.
Discover our services, expertise and offerings.
Benefit from comprehensive, multidisciplinary expertise to support you through the design, development and maintenance of our applications.
Mobile application
- Scoping and follow-up
- Programming
- Visual design
- Security
- Technical design
- Maintenance
Web application and SaaS
- Scoping and follow-up
- Programming
- Visual design
- Security
- Technical design
- Maintenance
Back-office, CMS and CRM
- Scoping and follow-up
- Programming
- Visual design
- Security
- Technical design
- Maintenance
Complex algorithms and AI
- Technical design
- Sécurité
- Programming and prompting
- Integration
Custom backend
- Scoping and follow-up
- Security
- Technical design
- Maintenance
- Programming
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.
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.